In Depth Spatially Inhomogeneous Phase Transition in Epitaxial MnAs Film on GaAs(001). Gatel, C., Fu, X., Serin, V., Eddrief, M., Etgens, V., & Warot-Fonrose, B. Nano Letters, 17(4):2460–2466, April, 2017.
In Depth Spatially Inhomogeneous Phase Transition in Epitaxial MnAs Film on GaAs(001) [link]Paper  doi  abstract   bibtex   
Most studies on MnAs material in its bulk form have been focused on its temperature-dependent structural phase transition accompanied by a magnetic one. Magnetostructural phase transition parameters in thin MnAs films grown on substrates present however some differences from the bulk behavior, and local studies become mandatory for a deeper understanding of the mechanisms involved within the transition. Up to now, only surface techniques have been carried out, while the transition is a three-dimensional phenomenon. We therefore developed an original nanometer scale methodology using electron holography to investigate the phase transition in an epitaxial MnAs thin film on GaAs(001) from the cross-section view. Using quantitative magnetic maps recorded at the nanometer scale as a function of the temperature, our work provides a direct in situ observation of the inhomogeneous spatial distribution of the transition in the layer depth and brings new insights on the fundamental transition mechanisms.
@article{gatel_depth_2017,
	title = {In {Depth} {Spatially} {Inhomogeneous} {Phase} {Transition} in {Epitaxial} {MnAs} {Film} on {GaAs}(001)},
	volume = {17},
	issn = {1530-6984},
	url = {http://dx.doi.org/10.1021/acs.nanolett.7b00144},
	doi = {10.1021/acs.nanolett.7b00144},
	abstract = {Most studies on MnAs material in its bulk form have been focused on its temperature-dependent structural phase transition accompanied by a magnetic one. Magnetostructural phase transition parameters in thin MnAs films grown on substrates present however some differences from the bulk behavior, and local studies become mandatory for a deeper understanding of the mechanisms involved within the transition. Up to now, only surface techniques have been carried out, while the transition is a three-dimensional phenomenon. We therefore developed an original nanometer scale methodology using electron holography to investigate the phase transition in an epitaxial MnAs thin film on GaAs(001) from the cross-section view. Using quantitative magnetic maps recorded at the nanometer scale as a function of the temperature, our work provides a direct in situ observation of the inhomogeneous spatial distribution of the transition in the layer depth and brings new insights on the fundamental transition mechanisms.},
	number = {4},
	urldate = {2017-10-02},
	journal = {Nano Letters},
	author = {Gatel, C. and Fu, X. and Serin, V. and Eddrief, M. and Etgens, V. and Warot-Fonrose, B.},
	month = apr,
	year = {2017},
	pages = {2460--2466},
}

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