@article{leonhardt2003,
	title = {Synthesis and properties of filled carbon nanotubes},
	volume = {12},
	issn = {0925-9635},
	url = {http://www.sciencedirect.com/science/article/B6TWV-4806CX0-C/2/ce4f1cb692055d5a35ef38bbd19cc1a9},
	doi = {10.1016/S0925-9635(02)00325-4},
	abstract = {Single- and multi-walled carbon nanotubes are very interesting nanoscaled materials with many possible applications in nanoelectronics. Especially, nanotubes filled with ferromagnetic materials (Fe, Co, Ni) may have significant potential in data storage. Such structures may help to exceed the best available storage densities ({\textgreater}65 Gb/inch2) and show in the case of Fe-filled nanotubes higher coercivities compared to bulk Fe. In addition, metal-filled carbon nanotubes are promising nanowires with excellent oxidation protection. In this paper we describe the synthesis of Fe-, Ni- and Co-filled carbon nanotubes by using the chemical vapor deposition method. Varying the deposition conditions we have obtained filled nanotubes with relatively uniform core diameters and different thicknesses of the carbon walls. The core diameters vary between 15 and 30 nm and the thickness of the carbon shells between 2 and 60 nm. The length of the tubes amounts up to 30 [mu]m. The filled carbon nanotubes are characterised by scanning and transmission electron microscopy and energy dispersive X-ray analysis. The magnetic behaviour of the aligned Fe-filled tubes is investigated using alternating gradient magnetometry measurements and electron holography. The hysteresis loops indicate a magnetic anisotropy. The coercivity depends on the direction of the applied magnetic field. The observed enhanced coercivities are significantly higher than in bulk Fe.},
	number = {3-7},
	urldate = {2010-12-11},
	journal = {Diamond and Related Materials},
	author = {Leonhardt, A. and Ritschel, M. and Kozhuharova, R. and Graff, A. and Mühl, T. and Huhle, R. and Mönch, I. and Elefant, D. and Schneider, C. M.},
	month = mar,
	year = {2003},
	keywords = {Chemical vapour deposition, Electronic device structures, Nanotechnology, Nanotubes},
	pages = {790--793},
}

{"_id":"SdPenpwjaBprtFNJD","bibbaseid":"leonhardt-ritschel-kozhuharova-graff-mhl-huhle-mnch-elefant-etal-synthesisandpropertiesoffilledcarbonnanotubes-2003","author_short":["Leonhardt, A.","Ritschel, M.","Kozhuharova, R.","Graff, A.","Mühl, T.","Huhle, R.","Mönch, I.","Elefant, D.","Schneider, C. M."],"bibdata":{"bibtype":"article","type":"article","title":"Synthesis and properties of filled carbon nanotubes","volume":"12","issn":"0925-9635","url":"http://www.sciencedirect.com/science/article/B6TWV-4806CX0-C/2/ce4f1cb692055d5a35ef38bbd19cc1a9","doi":"10.1016/S0925-9635(02)00325-4","abstract":"Single- and multi-walled carbon nanotubes are very interesting nanoscaled materials with many possible applications in nanoelectronics. Especially, nanotubes filled with ferromagnetic materials (Fe, Co, Ni) may have significant potential in data storage. Such structures may help to exceed the best available storage densities (\\textgreater65 Gb/inch2) and show in the case of Fe-filled nanotubes higher coercivities compared to bulk Fe. In addition, metal-filled carbon nanotubes are promising nanowires with excellent oxidation protection. In this paper we describe the synthesis of Fe-, Ni- and Co-filled carbon nanotubes by using the chemical vapor deposition method. Varying the deposition conditions we have obtained filled nanotubes with relatively uniform core diameters and different thicknesses of the carbon walls. The core diameters vary between 15 and 30 nm and the thickness of the carbon shells between 2 and 60 nm. The length of the tubes amounts up to 30 [mu]m. The filled carbon nanotubes are characterised by scanning and transmission electron microscopy and energy dispersive X-ray analysis. The magnetic behaviour of the aligned Fe-filled tubes is investigated using alternating gradient magnetometry measurements and electron holography. The hysteresis loops indicate a magnetic anisotropy. The coercivity depends on the direction of the applied magnetic field. The observed enhanced coercivities are significantly higher than in bulk Fe.","number":"3-7","urldate":"2010-12-11","journal":"Diamond and Related Materials","author":[{"propositions":[],"lastnames":["Leonhardt"],"firstnames":["A."],"suffixes":[]},{"propositions":[],"lastnames":["Ritschel"],"firstnames":["M."],"suffixes":[]},{"propositions":[],"lastnames":["Kozhuharova"],"firstnames":["R."],"suffixes":[]},{"propositions":[],"lastnames":["Graff"],"firstnames":["A."],"suffixes":[]},{"propositions":[],"lastnames":["Mühl"],"firstnames":["T."],"suffixes":[]},{"propositions":[],"lastnames":["Huhle"],"firstnames":["R."],"suffixes":[]},{"propositions":[],"lastnames":["Mönch"],"firstnames":["I."],"suffixes":[]},{"propositions":[],"lastnames":["Elefant"],"firstnames":["D."],"suffixes":[]},{"propositions":[],"lastnames":["Schneider"],"firstnames":["C.","M."],"suffixes":[]}],"month":"March","year":"2003","keywords":"Chemical vapour deposition, Electronic device structures, Nanotechnology, Nanotubes","pages":"790–793","bibtex":"@article{leonhardt2003,\n\ttitle = {Synthesis and properties of filled carbon nanotubes},\n\tvolume = {12},\n\tissn = {0925-9635},\n\turl = {http://www.sciencedirect.com/science/article/B6TWV-4806CX0-C/2/ce4f1cb692055d5a35ef38bbd19cc1a9},\n\tdoi = {10.1016/S0925-9635(02)00325-4},\n\tabstract = {Single- and multi-walled carbon nanotubes are very interesting nanoscaled materials with many possible applications in nanoelectronics. Especially, nanotubes filled with ferromagnetic materials (Fe, Co, Ni) may have significant potential in data storage. Such structures may help to exceed the best available storage densities ({\\textgreater}65 Gb/inch2) and show in the case of Fe-filled nanotubes higher coercivities compared to bulk Fe. In addition, metal-filled carbon nanotubes are promising nanowires with excellent oxidation protection. In this paper we describe the synthesis of Fe-, Ni- and Co-filled carbon nanotubes by using the chemical vapor deposition method. Varying the deposition conditions we have obtained filled nanotubes with relatively uniform core diameters and different thicknesses of the carbon walls. The core diameters vary between 15 and 30 nm and the thickness of the carbon shells between 2 and 60 nm. The length of the tubes amounts up to 30 [mu]m. The filled carbon nanotubes are characterised by scanning and transmission electron microscopy and energy dispersive X-ray analysis. 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