Probing the A1 to L1{sub 0} transformation in FeCuPt using the first order reversal curve method
- Physics Department, University of California, Davis, California 95616 (United States)
- Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu, Taiwan (China)
- National Institute of Standards and Technology, Gaithersburg, Maryland 20899 (United States)
- Seagate Technology, Fremont, California 94538 (United States)
The A1-L1{sub 0} phase transformation has been investigated in (001) FeCuPt thin films prepared by atomic-scale multilayer sputtering and rapid thermal annealing (RTA). Traditional x-ray diffraction is not always applicable in generating a true order parameter, due to non-ideal crystallinity of the A1 phase. Using the first-order reversal curve (FORC) method, the A1 and L1{sub 0} phases are deconvoluted into two distinct features in the FORC distribution, whose relative intensities change with the RTA temperature. The L1{sub 0} ordering takes place via a nucleation-and-growth mode. A magnetization-based phase fraction is extracted, providing a quantitative measure of the L1{sub 0} phase homogeneity.
- OSTI ID:
- 22303559
- Journal Information:
- APL Materials, Vol. 2, Issue 8; Other Information: (c) 2014 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 2166-532X
- Country of Publication:
- United States
- Language:
- English
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