Meyer, T.; Westphal, T.; Kressdorf, B.; Ross, U.; Jooss, C.; and Seibt, M.
Site-specific plan-view TEM lamella preparation of pristine surfaces with a large field of view.
Ultramicroscopy, 228: 113320. 2021.
Paper
doi
link
bibtex
abstract
@article{MEYER2021113320,
title = {Site-specific plan-view TEM lamella preparation of pristine surfaces with a large field of view},
journal = {Ultramicroscopy},
volume = {228},
pages = {113320},
year = {2021},
issn = {0304-3991},
doi = {https://doi.org/10.1016/j.ultramic.2021.113320},
url = {https://www.sciencedirect.com/science/article/pii/S0304399121001054},
author = {Tobias Meyer and Tobias Westphal and Birte Kressdorf and Ulrich Ross and Christian Jooss and Michael Seibt},
keywords = {TEM, Lamella, Preparation, Plan-view, Site-specific, Field of view},
abstract = {Transmission electron microscopy has become a major characterization tool with an ever increasing variety of methods being applied in a wide range of scientific fields. However, the probably most famous pitfall in related workflows is the preparation of high-quality electron-transparent lamellae enabling for extraction of valuable information. Particularly in the field of solid state physics and materials science, it often required to study the surface of a macroscopic specimen with plan-view orientation. Nevertheless, despite tremendous advances in instrumentation, i.e. focused ion beam, the yield of existing plan-view lamellae preparation techniques is relatively low compared to cross-sectional extraction methods. Furthermore, techniques relying on mechanical treatments, i.e. conventional preparation, compromise site-specifity. In this paper, we demonstrate that by combining a mechanical grinding step prior to backside lift-out in the focused ion beam plan-view lamellae preparation becomes increasingly easy. The suggested strategy combines site-specifity with micrometer precision as well as possible investigation of pristine surfaces with a field of view of several hundred square micrometers.}
}
Transmission electron microscopy has become a major characterization tool with an ever increasing variety of methods being applied in a wide range of scientific fields. However, the probably most famous pitfall in related workflows is the preparation of high-quality electron-transparent lamellae enabling for extraction of valuable information. Particularly in the field of solid state physics and materials science, it often required to study the surface of a macroscopic specimen with plan-view orientation. Nevertheless, despite tremendous advances in instrumentation, i.e. focused ion beam, the yield of existing plan-view lamellae preparation techniques is relatively low compared to cross-sectional extraction methods. Furthermore, techniques relying on mechanical treatments, i.e. conventional preparation, compromise site-specifity. In this paper, we demonstrate that by combining a mechanical grinding step prior to backside lift-out in the focused ion beam plan-view lamellae preparation becomes increasingly easy. The suggested strategy combines site-specifity with micrometer precision as well as possible investigation of pristine surfaces with a field of view of several hundred square micrometers.
Weber, N. A.; Schmidt, H.; Sievert, T.; Jooss, C.; Güthoff, F.; Moshneaga, V.; Samwer, K.; Krüger, M.; and Volkert, C. A.
Polaronic Contributions to Friction in a Manganite Thin Film.
Advanced Science, 8(8): 2003524. 2021.
Paper
doi
link
bibtex
abstract
@article{https://doi.org/10.1002/advs.202003524,
author = {Weber, Niklas A. and Schmidt, Hendrik and Sievert, Tim and Jooss, Christian and Güthoff, Friedrich and Moshneaga, Vasily and Samwer, Konrad and Krüger, Matthias and Volkert, Cynthia A.},
title = {Polaronic Contributions to Friction in a Manganite Thin Film},
journal = {Advanced Science},
volume = {8},
number = {8},
pages = {2003524},
keywords = {atomic force microscopy, friction, friction force microscopy, manganite, polarons},
doi = {https://doi.org/10.1002/advs.202003524},
url = {https://onlinelibrary.wiley.com/doi/abs/10.1002/advs.202003524},
eprint = {https://onlinelibrary.wiley.com/doi/pdf/10.1002/advs.202003524},
abstract = {Abstract Despite the huge importance of friction in regulating movement in all natural and technological processes, the mechanisms underlying dissipation at a sliding contact are still a matter of debate. Attempts to explain the dependence of measured frictional losses at nanoscale contacts on the electronic degrees of freedom of the surrounding materials have so far been controversial. Here, it is proposed that friction can be explained by considering the damping of stick-slip pulses in a sliding contact. Based on friction force microscopy studies of La(1−x)SrxMnO3 films at the ferromagnetic-metallic to a paramagnetic-polaronic conductor phase transition, it is confirmed that the sliding contact generates thermally-activated slip pulses in the nanoscale contact, and argued that these are damped by direct coupling into the phonon bath. Electron-phonon coupling leads to the formation of Jahn–Teller polarons and to a clear increase in friction in the high-temperature phase. There is neither evidence for direct electronic drag on the atomic force microscope tip nor any indication of contributions from electrostatic forces. This intuitive scenario, that friction is governed by the damping of surface vibrational excitations, provides a basis for reconciling controversies in literature studies as well as suggesting possible tactics for controlling friction.},
year = {2021}
}
Abstract Despite the huge importance of friction in regulating movement in all natural and technological processes, the mechanisms underlying dissipation at a sliding contact are still a matter of debate. Attempts to explain the dependence of measured frictional losses at nanoscale contacts on the electronic degrees of freedom of the surrounding materials have so far been controversial. Here, it is proposed that friction can be explained by considering the damping of stick-slip pulses in a sliding contact. Based on friction force microscopy studies of La(1−x)SrxMnO3 films at the ferromagnetic-metallic to a paramagnetic-polaronic conductor phase transition, it is confirmed that the sliding contact generates thermally-activated slip pulses in the nanoscale contact, and argued that these are damped by direct coupling into the phonon bath. Electron-phonon coupling leads to the formation of Jahn–Teller polarons and to a clear increase in friction in the high-temperature phase. There is neither evidence for direct electronic drag on the atomic force microscope tip nor any indication of contributions from electrostatic forces. This intuitive scenario, that friction is governed by the damping of surface vibrational excitations, provides a basis for reconciling controversies in literature studies as well as suggesting possible tactics for controlling friction.
Jansen, D.; Jooss, C.; and Heidrich-Meisner, F.
Charge density wave breakdown in a heterostructure with electron-phonon coupling.
Phys. Rev. B, 104: 195116. Nov 2021.
Paper
doi
link
bibtex
@article{PhysRevB.104.195116,
title = {Charge density wave breakdown in a heterostructure with electron-phonon coupling},
author = {Jansen, David and Jooss, Christian and Heidrich-Meisner, Fabian},
journal = {Phys. Rev. B},
volume = {104},
issue = {19},
pages = {195116},
numpages = {14},
year = {2021},
month = {Nov},
publisher = {American Physical Society},
doi = {10.1103/PhysRevB.104.195116},
url = {https://link.aps.org/doi/10.1103/PhysRevB.104.195116}
}
Choi, I.; Shen, Z.; Ronge, E.; Karius, V.; Jooss, C.; and Ackermann, L.
Reusable Manganese Catalyst for Site-Selective Pyridine C−H Arylations and Alkylations.
Chemistry – A European Journal, 27(50): 12737-12741. 2021.
Paper
doi
link
bibtex
abstract
@article{https://doi.org/10.1002/chem.202101894,
author = {Choi, Isaac and Shen, Zhigao and Ronge, Emanuel and Karius, Volker and Jooss, Christian and Ackermann, Lutz},
title = {Reusable Manganese Catalyst for Site-Selective Pyridine C−H Arylations and Alkylations},
journal = {Chemistry – A European Journal},
volume = {27},
number = {50},
pages = {12737-12741},
keywords = {C−H alkylation, C−H arylation, hybrid catalysis, manganese catalysis, site-selectivity},
doi = {https://doi.org/10.1002/chem.202101894},
url = {https://chemistry-europe.onlinelibrary.wiley.com/doi/abs/10.1002/chem.202101894},
eprint = {https://chemistry-europe.onlinelibrary.wiley.com/doi/pdf/10.1002/chem.202101894},
abstract = {Abstract Herein, we disclose a recyclable, hybrid manganese catalyst for site-selective azine C−H activation by weak amide assistance. The novel, reusable catalyst enabled C3–H arylation and C3–H alkylation with ample scope, and was characterized by detailed transmission electron microscopy analysis.},
year = {2021}
}
Abstract Herein, we disclose a recyclable, hybrid manganese catalyst for site-selective azine C−H activation by weak amide assistance. The novel, reusable catalyst enabled C3–H arylation and C3–H alkylation with ample scope, and was characterized by detailed transmission electron microscopy analysis.
Kressdorf, B.; Meyer, T.; ten Brink, M.; Seick, C.; Melles, S.; Ottinger, N.; Titze, T.; Meer, H.; Weisser, A.; Hoffmann, J.; Mathias, S.; Ulrichs, H.; Steil, D.; Seibt, M.; Blöchl, P. E.; and Jooss, C.
Orbital-order phase transition in ${\mathrm{Pr}}_{1\ensuremath{-}x}{\mathrm{Ca}}_{x}{\mathrm{MnO}}_{3}$ probed by photovoltaics.
Phys. Rev. B, 103: 235122. Jun 2021.
Paper
doi
link
bibtex
@article{PhysRevB.103.235122,
title = {Orbital-order phase transition in ${\mathrm{Pr}}_{1\ensuremath{-}x}{\mathrm{Ca}}_{x}{\mathrm{MnO}}_{3}$ probed by photovoltaics},
author = {Kressdorf, B. and Meyer, T. and ten Brink, M. and Seick, C. and Melles, S. and Ottinger, N. and Titze, T. and Meer, H. and Weisser, A. and Hoffmann, J. and Mathias, S. and Ulrichs, H. and Steil, D. and Seibt, M. and Bl\"ochl, P. E. and Jooss, C.},
journal = {Phys. Rev. B},
volume = {103},
issue = {23},
pages = {235122},
numpages = {21},
year = {2021},
month = {Jun},
publisher = {American Physical Society},
doi = {10.1103/PhysRevB.103.235122},
url = {https://link.aps.org/doi/10.1103/PhysRevB.103.235122}
}
Hoffmann-Urlaub, S.; Ross, U.; Hoffmann, J.; Belenchuk, A.; Shapoval, O.; Roddatis, V.; Ma, Q.; Kressdorf, B.; Moshnyaga, V.; and Jooss, C.
Tailoring c-Axis Orientation in Epitaxial Ruddlesden–Popper Pr0.5Ca1.5MnO4 Films.
Advanced Materials Interfaces, 8(7): 2002049. 2021.
Paper
doi
link
bibtex
abstract
@article{https://doi.org/10.1002/admi.202002049,
author = {Hoffmann-Urlaub, Sarah and Ross, Ulrich and Hoffmann, Jörg and Belenchuk, Alexandr and Shapoval, Oleg and Roddatis, Vladimir and Ma, Qian and Kressdorf, Birte and Moshnyaga, Vasily and Jooss, Christian},
title = {Tailoring c-Axis Orientation in Epitaxial Ruddlesden–Popper Pr0.5Ca1.5MnO4 Films},
journal = {Advanced Materials Interfaces},
volume = {8},
number = {7},
pages = {2002049},
keywords = {epitaxy, Ruddlesden-Popper manganites, thin film growth},
doi = {https://doi.org/10.1002/admi.202002049},
url = {https://onlinelibrary.wiley.com/doi/abs/10.1002/admi.202002049},
eprint = {https://onlinelibrary.wiley.com/doi/pdf/10.1002/admi.202002049},
abstract = {Abstract Interest in layered Ruddlesden–Popper (RP) strongly correlated manganites of Pr0.5Ca1.5MnO4 as well as in their thin film polymorphs is motivated by the high temperature of charge orbital ordering above room temperature. The c-axis orientation in epitaxial films is tailored by different SrTiO3 (STO) substrate orientations and CaMnO3 (CMO) buffer layers. Films on STO(110) show in-plane alignment of the c-axis parallel to the [100] direction. On STO(100), two possible directions of the in-plane c-axis lead to a mosaic like, quasi 2D nanostructure, consisting of RP, rock-salt, and perovskite blocks. With the CMO buffer layer, Pr0.5Ca1.5MnO4 epitaxial films with c-axis out-of-plane are realized. Different physical vapor deposition techniques as ion beam sputtering, pulsed laser deposition and metalorganic aerosol deposition are applied in order to distinguish effects of growth conditions from intrinsic epitaxial properties. Despite their very different growth conditions, surface morphology, crystal structure, and orientation of the thin films reveal a high level of similarity as verified by X-ray diffraction, scanning, and high resolution transmission electron microscopy. For different epitaxial relations stress in the films is relaxed by means of modified interface chemistry. The charge ordering in the films occurs at a temperature close to that expected in bulk material.},
year = {2021}
}
Abstract Interest in layered Ruddlesden–Popper (RP) strongly correlated manganites of Pr0.5Ca1.5MnO4 as well as in their thin film polymorphs is motivated by the high temperature of charge orbital ordering above room temperature. The c-axis orientation in epitaxial films is tailored by different SrTiO3 (STO) substrate orientations and CaMnO3 (CMO) buffer layers. Films on STO(110) show in-plane alignment of the c-axis parallel to the [100] direction. On STO(100), two possible directions of the in-plane c-axis lead to a mosaic like, quasi 2D nanostructure, consisting of RP, rock-salt, and perovskite blocks. With the CMO buffer layer, Pr0.5Ca1.5MnO4 epitaxial films with c-axis out-of-plane are realized. Different physical vapor deposition techniques as ion beam sputtering, pulsed laser deposition and metalorganic aerosol deposition are applied in order to distinguish effects of growth conditions from intrinsic epitaxial properties. Despite their very different growth conditions, surface morphology, crystal structure, and orientation of the thin films reveal a high level of similarity as verified by X-ray diffraction, scanning, and high resolution transmission electron microscopy. For different epitaxial relations stress in the films is relaxed by means of modified interface chemistry. The charge ordering in the films occurs at a temperature close to that expected in bulk material.
Ronge, E.; Ohms, J.; Roddatis, V.; Jones, T.; Sulzmann, F.; Knop-Gericke, A.; Schlögl, R.; Kurz, P.; Jooss, C.; and Skorupska, K.
Operation of calcium-birnessite water-oxidation anodes: interactions of the catalyst with phosphate buffer anions.
Sustainable Energy Fuels, 5: 5535-5547. 2021.
Paper
doi
link
bibtex
abstract
@Article{D1SE01076J,
author ="Ronge, Emanuel and Ohms, Jonas and Roddatis, Vladimir and Jones, Travis and Sulzmann, Frederic and Knop-Gericke, Axel and Schlögl, Robert and Kurz, Philipp and Jooss, Christian and Skorupska, Katarzyna",
title ="Operation of calcium-birnessite water-oxidation anodes: interactions of the catalyst with phosphate buffer anions",
journal ="Sustainable Energy Fuels",
year ="2021",
volume ="5",
issue ="21",
pages ="5535-5547",
publisher ="The Royal Society of Chemistry",
doi ="10.1039/D1SE01076J",
url ="http://dx.doi.org/10.1039/D1SE01076J",
abstract ="Investigating the interfaces between electrolytes and electrocatalysts during electrochemical water oxidation is of great importance for an understanding of the factors influencing catalytic activity and stability. Here{,} the interaction of a well-established{,} nanocrystalline and mesoporous Ca-birnessite catalyst material (initial composition K0.2Ca0.21MnO2.21·1.4H2O{,} initial Mn-oxidation state ∼+3.8) with an aqueous potassium phosphate buffer electrolyte at pH 7 was studied mainly by using various electron microscopy and X-ray spectroscopy techniques. In comparison to electrolyte solutions not containing phosphate{,} the investigated Ca-birnessite electrodes show especially high and stable oxygen evolution activity in phosphate buffer. During electrolysis{,} partial ion substitutions of Ca2+ by K+ and OH−/O2− by HnPO4(3−n)− were observed{,} leading to the formation of a stable{,} partially disordered Ca–K–Mn–HnPO4–H2O layer on the outer and the pore surfaces of the active electrocatalyst material. In this surface layer{,} Mn3+ ions are stabilized{,} which are often assumed to be of key importance for oxygen evolution catalysis. Furthermore{,} evidence for the formation of [Ca/PO4/H2O]− complexes located between the [MnO6] layers of the birnessite was found using the soft Ca 2p and Ca L-edge X-ray spectroscopy. A possible way to interpret the observed{,} obviously very favorable “special relationship” between (hydrogen)phosphates and Ca-birnessites in electrocatalytic water oxidation would be that HnPO4(3−n)− anions are incorporated into the catalyst material where they act as stabilizing units for Mn3+ highly active centers and also as “internal bases” for the protons released during the water-oxidation reaction."
}
Investigating the interfaces between electrolytes and electrocatalysts during electrochemical water oxidation is of great importance for an understanding of the factors influencing catalytic activity and stability. Here, the interaction of a well-established, nanocrystalline and mesoporous Ca-birnessite catalyst material (initial composition K0.2Ca0.21MnO2.21·1.4H2O, initial Mn-oxidation state ∼+3.8) with an aqueous potassium phosphate buffer electrolyte at pH 7 was studied mainly by using various electron microscopy and X-ray spectroscopy techniques. In comparison to electrolyte solutions not containing phosphate, the investigated Ca-birnessite electrodes show especially high and stable oxygen evolution activity in phosphate buffer. During electrolysis, partial ion substitutions of Ca2+ by K+ and OH−/O2− by HnPO4(3−n)− were observed, leading to the formation of a stable, partially disordered Ca–K–Mn–HnPO4–H2O layer on the outer and the pore surfaces of the active electrocatalyst material. In this surface layer, Mn3+ ions are stabilized, which are often assumed to be of key importance for oxygen evolution catalysis. Furthermore, evidence for the formation of [Ca/PO4/H2O]− complexes located between the [MnO6] layers of the birnessite was found using the soft Ca 2p and Ca L-edge X-ray spectroscopy. A possible way to interpret the observed, obviously very favorable “special relationship” between (hydrogen)phosphates and Ca-birnessites in electrocatalytic water oxidation would be that HnPO4(3−n)− anions are incorporated into the catalyst material where they act as stabilizing units for Mn3+ highly active centers and also as “internal bases” for the protons released during the water-oxidation reaction.
Ronge, E.; Lindner, J.; Ross, U.; Melder, J.; Ohms, J.; Roddatis, V.; Kurz, P.; and Jooss, C.
Atom Surface Dynamics of Manganese Oxide under Oxygen Evolution Reaction-Like Conditions Studied by In Situ Environmental Transmission Electron Microscopy.
The Journal of Physical Chemistry C, 125(9): 5037-5047. 2021.
Paper
doi
link
bibtex
@article{doi:10.1021/acs.jpcc.0c09806,
author = {Ronge, Emanuel and Lindner, Jonas and Ross, Ulrich and Melder, Jens and Ohms, Jonas and Roddatis, Vladimir and Kurz, Philipp and Jooss, Christian},
title = {Atom Surface Dynamics of Manganese Oxide under Oxygen Evolution Reaction-Like Conditions Studied by In Situ Environmental Transmission Electron Microscopy},
journal = {The Journal of Physical Chemistry C},
volume = {125},
number = {9},
pages = {5037-5047},
year = {2021},
doi = {10.1021/acs.jpcc.0c09806},
URL = {https://doi.org/10.1021/acs.jpcc.0c09806},
eprint = {https://doi.org/10.1021/acs.jpcc.0c09806}
}
Weber, N. A.; Schmidt, H.; Sievert, T.; Jooss, C.; Güthoff, F.; Moshneaga, V.; Samwer, K.; Krüger, M.; and Volkert, C. A.
Polaronic Contributions to Friction in a Manganite Thin Film.
Advanced Science,2003524. 2021.
Paper
doi
link
bibtex
@article{10.1002/advs.202003524,
doi = {10.1002/advs.202003524},
url = {http://dx.doi.org/10.1002/advs.202003524},
year = 2021,
publisher = {Wiley},
pages = {2003524},
author = {Niklas A. Weber and Hendrik Schmidt and Tim Sievert and Christian Jooss and Friedrich Güthoff and Vasily Moshneaga and Konrad Samwer and Matthias Krüger and Cynthia A. Volkert},
title = {Polaronic Contributions to Friction in a Manganite Thin Film},
journal = {Advanced Science}
}
Ronge, E.; Lindner, J.; Ross, U.; Melder, J.; Ohms, J.; Roddatis, V.; Kurz, P.; and Jooss, C.
Atom Surface Dynamics of Manganese Oxide under Oxygen Evolution Reaction-Like Conditions Studied by In Situ Environmental Transmission Electron Microscopy.
The Journal of Physical Chemistry C. 2021.
Paper
doi
link
bibtex
@article{10.1021/acs.jpcc.0c09806,
doi = {10.1021/acs.jpcc.0c09806},
url = {http://dx.doi.org/10.1021/acs.jpcc.0c09806},
year = 2021,
publisher = {American Chemical Society ({ACS})},
author = {Emanuel Ronge and Jonas Lindner and Ulrich Ross and Jens Melder and Jonas Ohms and Vladimir Roddatis and Philipp Kurz and Christian Jooss},
title = {Atom Surface Dynamics of Manganese Oxide under Oxygen Evolution Reaction-Like Conditions Studied by In Situ Environmental Transmission Electron Microscopy},
journal = {The Journal of Physical Chemistry C}
}
Borchers, C.; Arlt, J.; Nowak, C.; Gärtner, F.; Hammerschmidt, M.; Kreye, H.; Volkert, C.; and Kirchheim, R.
Influence of element distribution on mechanical properties in the bonding zone of explosively welded steels.
Scripta Materialia, 199: 113860. 2021.
Paper
doi
link
bibtex
@article{10.1016/j.scriptamat.2021.113860,
doi = {10.1016/j.scriptamat.2021.113860},
url = {http://dx.doi.org/10.1016/j.scriptamat.2021.113860},
year = 2021,
publisher = {Elsevier {BV}},
volume = {199},
pages = {113860},
author = {C. Borchers and J. Arlt and C. Nowak and F. Gärtner and M. Hammerschmidt and H. Kreye and C.A. Volkert and R. Kirchheim},
title = {Influence of element distribution on mechanical properties in the bonding zone of explosively welded steels},
journal = {Scripta Materialia}
}
Edalati, K.; Li, H.; Kilmametov, A.; Floriano, R.; and Borchers, C.
High-Pressure Torsion for Synthesis of High-Entropy Alloys.
Metals, 11: 1263. 2021.
Paper
doi
link
bibtex
@article{10.3390/met11081263,
doi = {10.3390/met11081263},
url = {http://dx.doi.org/10.3390/met11081263},
year = 2021,
publisher = {{MDPI} {AG}},
volume = {11},
pages = {1263},
author = {Kaveh Edalati and Hai-Wen Li and Askar Kilmametov and Ricardo Floriano and Christine Borchers},
title = {High-Pressure Torsion for Synthesis of High-Entropy Alloys},
journal = {Metals}
}
Amiri, S.; Volkert, C. A.; and Vink, R. L. C.
Friction on incommensurate substrates: Role of anharmonicity and defects.
Physical Review E, 104: 014802. 2021.
Paper
doi
link
bibtex
@article{10.1103/physreve.104.014802,
doi = {10.1103/physreve.104.014802},
url = {http://dx.doi.org/10.1103/physreve.104.014802},
year = 2021,
publisher = {American Physical Society ({APS})},
volume = {104},
author = {S. Amiri and C. A. Volkert and R. L. C. Vink},
title = {Friction on incommensurate substrates: Role of anharmonicity and defects},
journal = {Physical Review E},
pages = {014802}
}
Jansen, D.; Jooss, C.; and Heidrich-Meisner, F.
Charge density wave breakdown in a heterostructure with electron-phonon coupling.
Physical Review B, 104: 195116. 2021.
Paper
doi
link
bibtex
@article{10.1103/physrevb.104.195116,
doi = {10.1103/physrevb.104.195116},
url = {http://dx.doi.org/10.1103/physrevb.104.195116},
year = 2021,
publisher = {American Physical Society ({APS})},
volume = {104},
author = {David Jansen and Christian Jooss and Fabian Heidrich-Meisner},
title = {Charge density wave breakdown in a heterostructure with electron-phonon coupling},
journal = {Physical Review B},
pages = {195116}
}
Hoffmann-Urlaub, S.; Ross, U.; Hoffmann, J.; Belenchuk, A.; Shapoval, O.; Roddatis, V.; Ma, Q.; Kressdorf, B.; Moshnyaga, V.; and Jooss, C.
Tailoring c -Axis Orientation in Epitaxial Ruddlesden-Popper Pr0.5Ca1.5MnO4Films.
Advanced Materials Interfaces, 8: 2002049. 2021.
Paper
doi
link
bibtex
@article{10.1002/admi.202002049,
doi = {10.1002/admi.202002049},
url = {http://dx.doi.org/10.1002/admi.202002049},
year = 2021,
publisher = {Wiley},
volume = {8},
pages = {2002049},
author = {Sarah Hoffmann-Urlaub and Ulrich Ross and Jörg Hoffmann and Alexandr Belenchuk and Oleg Shapoval and Vladimir Roddatis and Qian Ma and Birte Kressdorf and Vasily Moshnyaga and Christian Jooss},
title = {Tailoring
c
-Axis Orientation in Epitaxial Ruddlesden-Popper Pr0.5Ca1.5{MnO}4Films},
journal = {Advanced Materials Interfaces}
}
Kressdorf, B.; Meyer, T.; ten Brink, M.; Seick, C.; Melles, S.; Ottinger, N.; Titze, T.; Meer, H.; Weisser, A.; Hoffmann, J.; Mathias, S.; Ulrichs, H.; Steil, D.; Seibt, M.; Blöchl, P. E.; and Jooss, C.
Orbital-order phase transition in Pr1-xCaxMnO3 probed by photovoltaics.
Physical Review B, 103: 235122. 2021.
Paper
doi
link
bibtex
@article{10.1103/physrevb.103.235122,
doi = {10.1103/physrevb.103.235122},
url = {http://dx.doi.org/10.1103/physrevb.103.235122},
year = 2021,
publisher = {American Physical Society ({APS})},
volume = {103},
author = {B. Kressdorf and T. Meyer and M. ten Brink and C. Seick and S. Melles and N. Ottinger and T. Titze and H. Meer and A. Weisser and J. Hoffmann and S. Mathias and H. Ulrichs and D. Steil and M. Seibt and P. E. Blöchl and C. Jooss},
title = {Orbital-order phase transition in
Pr1-{xCaxMnO}3
probed by photovoltaics},
journal = {Physical Review B},
pages = {235122}
}
Choi, I.; Shen, Z.; Ronge, E.; Karius, V.; Jooss, C.; and Ackermann, L.
Reusable Manganese Catalyst for Site-Selective Pyridine C-H Arylations and Alkylations.
Chemistry - A European Journal, 27: 12737–12741. 2021.
Paper
doi
link
bibtex
@article{10.1002/chem.202101894,
doi = {10.1002/chem.202101894},
url = {http://dx.doi.org/10.1002/chem.202101894},
year = 2021,
publisher = {Wiley},
volume = {27},
pages = {12737--12741},
author = {Isaac Choi and Zhigao Shen and Emanuel Ronge and Volker Karius and Christian Jooss and Lutz Ackermann},
title = {Reusable Manganese Catalyst for Site-Selective Pyridine C-H Arylations and Alkylations},
journal = {Chemistry - A European Journal}
}
Ronge, E.; Ohms, J.; Roddatis, V.; Jones, T.; Sulzmann, F.; Knop-Gericke, A.; Schlögl, R.; Kurz, P.; Jooss, C.; and Skorupska, K.
Operation of calcium-birnessite water-oxidation anodes: interactions of the catalyst with phosphate buffer anions.
Sustainable Energy & Fuels, 5: 5535–5547. 2021.
Paper
doi
link
bibtex
@article{10.1039/d1se01076j,
doi = {10.1039/d1se01076j},
url = {http://dx.doi.org/10.1039/d1se01076j},
year = 2021,
publisher = {Royal Society of Chemistry ({RSC})},
volume = {5},
pages = {5535--5547},
author = {Emanuel Ronge and Jonas Ohms and Vladimir Roddatis and Travis Jones and Frederic Sulzmann and Axel Knop-Gericke and Robert Schlögl and Philipp Kurz and Christian Jooss and Katarzyna Skorupska},
title = {Operation of calcium-birnessite water-oxidation anodes: interactions of the catalyst with phosphate buffer anions},
journal = {Sustainable Energy {\&} Fuels}
}
Meyer, T.; Kressdorf, B.; Roddatis, V.; Hoffmann, J.; Jooss, C.; and Seibt, M.
Phase Transitions in a Perovskite Thin Film Studied by Environmental In Situ Heating Nano-Beam Electron Diffraction.
Small Methods, 5: 2100464. 2021.
Paper
doi
link
bibtex
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@article{10.1002/smtd.202100464,
doi = {10.1002/smtd.202100464},
url = {http://dx.doi.org/10.1002/smtd.202100464},
year = 2021,
publisher = {Wiley},
volume = {5},
pages = {2100464},
author = {Tobias Meyer and Birte Kressdorf and Vladimir Roddatis and Jörg Hoffmann and Christian Jooss and Michael Seibt},
title = {Phase Transitions in a Perovskite Thin Film Studied by Environmental In Situ Heating Nano-Beam Electron Diffraction},
journal = {Small Methods}
}
Meyer, T.; Westphal, T.; Kressdorf, B.; Ross, U.; Jooss, C.; and Seibt, M.
Site-specific plan-view Tem lamella preparation of pristine surfaces with a large field of view.
Ultramicroscopy, 228: 113320. 2021.
Paper
doi
link
bibtex
@article{10.1016/j.ultramic.2021.113320,
doi = {10.1016/j.ultramic.2021.113320},
url = {http://dx.doi.org/10.1016/j.ultramic.2021.113320},
year = 2021,
publisher = {Elsevier {BV}},
volume = {228},
pages = {113320},
author = {Tobias Meyer and Tobias Westphal and Birte Kressdorf and Ulrich Ross and Christian Jooss and Michael Seibt},
title = {Site-specific plan-view {Tem} lamella preparation of pristine surfaces with a large field of view},
journal = {Ultramicroscopy}
}