Characterization and magnetic properties of core/shell structured Fe/Au nanoparticles
作者： Sung-Jin Cho , Susan M. Kauzlarich , Justin Olamit , Kai Liu , Fernande Grandjean
DOI: 10.1063/1.1676033
关键词:
摘要: Au-coated Fe nanoparticles have been prepared by using a reverse micelle method through reduction of an aqueous solution. Characterizations carried out over time to probe the oxidation Fe. Immediately after synthesis, samples exhibit metallic conduction and negative magnetoresistance, consistent with presence α-Fe. The temperature dependence magnetization displays maximum at blocking around 150 K. After period 1 month, insulating behavior, indicating core. Mossbauer spectroscopy indicates α-Fe component broad distribution local environments.
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sci-hub.se 参考文章(17)
C. D. Graham, B. D. Cullity, Introduction to Magnetic Materials ,(1972)
T Kinoshita, S Seino, K Okitsu, T Nakayama, T Nakagawa, T.A Yamamoto, Magnetic evaluation of nanostructure of gold–iron composite particles synthesized by a reverse micelle method Journal of Alloys and Compounds. ,vol. 359, pp. 46- 50 ,(2003) , 10.1016/S0925-8388(03)00198-1
Kai Liu, L. Zhao, P. Klavins, Frank E. Osterloh, H. Hiramatsu, Extrinsic magnetoresistance in magnetite nanoparticles Journal of Applied Physics. ,vol. 93, pp. 7951- 7953 ,(2003) , 10.1063/1.1556133
Min Chen, Saeki Yamamuro, Dorothy Farrell, Sara A. Majetich, Gold-coated iron nanoparticles for biomedical applications Journal of Applied Physics. ,vol. 93, pp. 7551- 7553 ,(2003) , 10.1063/1.1555312
Jun Lin, Weilie Zhou, A. Kumbhar, J. Wiemann, Jiye Fang, E.E. Carpenter, C.J. O'Connor, Gold-coated iron (Fe@Au) nanoparticles: Synthesis, characterization, and magnetic field-induced self-assembly Journal of Solid State Chemistry. ,vol. 159, pp. 26- 31 ,(2001) , 10.1006/JSSC.2001.9117
J.I Martı́n, J Nogués, Kai Liu, J.L Vicent, Ivan K Schuller, Ordered magnetic nanostructures: fabrication and properties Journal of Magnetism and Magnetic Materials. ,vol. 256, pp. 449- 501 ,(2003) , 10.1016/S0304-8853(02)00898-3
W.L. Zhou, E.E. Carpenter, J. Lin, A. Kumbhar, J. Sims, C.J. O'Connor, Nanostructures of gold coated iron core-shell nanoparticles and the nanobands assembled under magnetic field European Physical Journal D. ,vol. 16, pp. 289- 292 ,(2001) , 10.1007/S100530170112
Shouheng Sun, Christopher B Murray, Dieter Weller, Liesl Folks, Andreas Moser, Monodisperse FePt Nanoparticles and Ferromagnetic FePt Nanocrystal Superlattices Science. ,vol. 287, pp. 1989- 1992 ,(2000) , 10.1126/SCIENCE.287.5460.1989
L Savini, E Bonetti, L Del Bianco, L Pasquini, L Signorini, M Coisson, V Selvaggini, Magnetotransport in core-shell Fe–Fe oxide nanostructures Journal of Magnetism and Magnetic Materials. ,vol. 262, pp. 56- 59 ,(2003) , 10.1016/S0304-8853(03)00018-0
B. Ravel, E. E. Carpenter, V. G. Harris, Oxidation of iron in iron/gold core/shell nanoparticles Journal of Applied Physics. ,vol. 91, pp. 8195- 8197 ,(2002) , 10.1063/1.1453941