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Microstructure and magnetic properties of L10 CoPt nanoparticles by Ag addition

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Abstract

CoPt nanoparticles with various Ag contents were synthesized by sol–gel technique. L10 CoPt alloy phase was formed after annealing at 700 °C. The coercivity (Hc) increased when the Ag content increased from 0 to 15 at.%. And Hc decreased when the Ag content was over 15 at.%. A certain amount of Ag could enhance the ordering degree of CoPt nanoparticles and improve the magnetic properties. When the Ag addition was more than 15 at.%, the deteriorated magnetic properties were ascribed to the decrease of ordering degree.

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Acknowledgments

This work is supported by Program for New Century Excellent Talents in University (NCET-09-0156 and NCET-11-0981) and Program for the development of Science and Technology of Jilin province (201201083 and 20140519003JH), the Twentieth Five-Year Program for Science and Technology of Education Department of Jilin Province (20110156), and Program for the master students’ scientific and innovative research of Jilin Normal University (201109).

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Authors and Affiliations

  1. Institute of Condensed State Physics, Jilin Normal University, Siping, 136000, People Republic of China

    Yaxin Wang, Xiaolong Zhang, Yang Liu, Yuhong Jiang, Yongjun Zhang & Jinghai Yang

  2. Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Siping, 136000, People Republic of China

    Yaxin Wang, Xiaolong Zhang, Yang Liu, Yuhong Jiang, Yongjun Zhang & Jinghai Yang

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  1. Yaxin Wang
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  2. Xiaolong Zhang
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  3. Yang Liu
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Correspondence to Yongjun Zhang.

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Wang, Y., Zhang, X., Liu, Y. et al. Microstructure and magnetic properties of L10 CoPt nanoparticles by Ag addition. J Sol-Gel Sci Technol 70, 528–533 (2014). https://doi.org/10.1007/s10971-014-3318-4

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  • DOI: https://doi.org/10.1007/s10971-014-3318-4

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