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Journal of Sol-Gel Science and Technology

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01-10-2014 | Original Paper

Effects of Cu addition on the structure and magnetic properties of L1₀-FePt nanoparticles prepared by sol–gel method

Authors: Yang Liu, Yuhong Jiang, Naveen Kadasala, Xiaolong Zhang, Chenyi Mao, Yaxin Wang, Huilian Liu, Xiaona Jiang, Jinghai Yang, Yongsheng Yan

Published in: Journal of Sol-Gel Science and Technology | Issue 1/2014

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Abstract

(FePt)₁₀₀Cu₀, (FePt)₉₅Cu₅ and (FePt)₉₀Cu₁₀ nanoparticles (NPs) were successfully synthesized by the sol–gel method. The relationship between Cu doping and structure and magnetic properties of L1₀-FePt NPs was studied. The results indicated that all three samples originated a L1₀-FePt structure and Cu doping did not destroy the ordered structure of L1₀-FePt. By increasing the Cu content, c/a ratio of the FePtCu NPs linearly decreased. Pawley refinement showed symmetry of (FePt)₉₅Cu₅ NPs was still tetragonal. When the Cu concentration increased from 0 to 10 %, coercivity increased from 7,050 to 11,250 Oe. This result confirms that the prepared alloys can be promising candidates for magnetic storage applications.

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Title: Effects of Cu addition on the structure and magnetic properties of L10-FePt nanoparticles prepared by sol–gel method
Authors: Yang Liu
Yuhong Jiang
Naveen Kadasala
Xiaolong Zhang
Chenyi Mao
Yaxin Wang
Huilian Liu
Xiaona Jiang
Jinghai Yang
Yongsheng Yan
Publication date: 01-10-2014
Publisher: Springer US
Published in: Journal of Sol-Gel Science and Technology / Issue 1/2014
Print ISSN: 0928-0707
Electronic ISSN: 1573-4846
DOI: https://doi.org/10.1007/s10971-014-3442-1

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