Evolution of Micro-structure and Magnetic Properties in L1{sub 0} CoPt Nanoparticles by Au Addition
- Jilin Normal University, Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education (China)
L1{sub 0} CoPt-Au nanoparticles with face-centered tetragonal (FCT) structure were synthesized by sol-gel technique at 700°C. The micro-structure and magnetism of L1{sub 0} CoPt-Au were measured by different measuring technologies. The influences of Au on the micro-structure and magnetism of L1{sub 0} CoPt nanoparticles were investigated. The Au addition promoted the formation of ordered L1{sub 0} phase CoPt nanoparticles and improved the grain size of L1{sub 0} CoPt nanoparticles When the Au content increased to 10 at.%, coercivity increased and saturation magnetization decreased, which may be originated from the increased order degree and ferrimagnetic nature of L1{sub 0} CoPt nanoparticles. Interestingly, when the Au addition was more than 10 at.%, the coercivity decreased due to the decrease of the order degree.
- OSTI ID:
- 22773901
- Journal Information:
- Journal of Superconductivity and Novel Magnetism, Vol. 31, Issue 8; Other Information: Copyright (c) 2018 Springer Science+Business Media, LLC, part of Springer Nature; http://www.springer-ny.com; Country of input: International Atomic Energy Agency (IAEA); ISSN 1557-1939
- Country of Publication:
- United States
- Language:
- English
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