Room temperature ferromagnetism and hopping conduction in Pt NCs/Al 2O3 films

Please use this identifier to cite or link to this item: https://doi.org/10.1063/1.3562872

Title:	Room temperature ferromagnetism and hopping conduction in Pt NCs/Al 2O3 films
Authors:	Ma, Y.W. Ding, J. Yi, J.B. Chan, L. Herng, T.S. Huang, S. Ran, M.
Issue Date:	1-Apr-2011
Citation:	Ma, Y.W., Ding, J., Yi, J.B., Chan, L., Herng, T.S., Huang, S., Ran, M. (2011-04-01). Room temperature ferromagnetism and hopping conduction in Pt NCs/Al 2O3 films. Journal of Applied Physics 109 (7) : -. ScholarBank@NUS Repository. https://doi.org/10.1063/1.3562872
Abstract:	In this work, Pt nanocrystals (NCs) were embedded into different oxide films by codeposition of Pt and oxide at 400 C and 10-8 Torr using a pulse laser deposition system. Films of Pt (25 mol. ) NCs embedded in (Al 2O3, ZnO, or SnO2) matrix showed room temperature ferromagnetism (RTFM), while Pt (25 mol. ) NCs/(MgO or SiO 2) films were not magnetic. The detailed study of Pt NCs/Al 2O3 films with different concentrations of Pt revealed that RTFM depended on Pt NC size and conductivity of the film. Resistance-temperature study of this film showed that the hopping conduction may be associated with RTFM. © 2011 American Institute of Physics.
Source Title:	Journal of Applied Physics
URI:	http://scholarbank.nus.edu.sg/handle/10635/86951
ISSN:	00218979
DOI:	10.1063/1.3562872
Appears in Collections:	Staff Publications

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