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FeGa alloys are among the most promising magnetostrictive materials. How to improve the magnetostriction of FeGa has been a long-term concern. In this work, trace amount of Pt doped FeGa - (Fe0.83Ga0.17)100-xPtx (x=0, 0.2, 0.4 and 0.6) were fabricated using melt-spinning technique. The magnetostriction, crystal structure and magnetocrystalline anisotropy of the ribbon samples were studied, revealing that the conforming between the crystal growth direction and the easy magnetization axis, and the enlarged lattice parameter both contribute to the enhancement of magnetostriction, which reached the maximum λ_⊥ of -1369 ppm at the optimum composition x=0.4. Finally, transmission electron microscopy was performed to show that, nanoinclusions exist not only in Pt-doped but also in Pt-free samples, demonstrating that the nanoinclusions do not play the dominant role in magnetostriction improvement. This work may accelerate the design of highly magnetostrictive FeGa alloys and other magnetic functional materials which are required of large magnetostriction.

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• In Copyright
  

  This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Zhiyong Dai, Chao Zhou, Chenyang Guo, Kang Cao, Ruisheng Zhang, Tieyan Chang, Yoshitaka Matsushita, Adil Murtaza, Fanghua Tian, Wenliang Zuo, Yin Zhang, Sen Yang, Xiaoping Song; Giant enhancement of magnetostriction in Pt doped FeGa ribbons. Appl. Phys. Lett. 21 August 2023; 123 (8): 082402. and may be found at https://doi.org/10.1063/5.0151431.

Keyword: magnetostriction, FeGa, magnetocrystalline anisotropy, crystal growth direction, nanoinclusion

Date published: 2023-08-21

Publisher: AIP Publishing

Journal:

• Applied Physics Letters (ISSN: 00036951) vol. 123 issue. 8 082402

Funding:

• Natural Science Foundation of Shaanxi Province 2023-JC-ZD-24
• Space Science and Application Project of China Manned Space Engineering KJZ-YY-NCL10
• Key Scientific and Technological Innovation Team of Shaanxi Province 2020TD-001
• Innovation Capability Support Program of Shaanxi 2018PT-28
• Innovation Capability Support Program of Shaanxi 2017KTPT-04
• Fundamental Research Funds for the Central Universities
• World-Class Universities
• Characteristic Development Guidance Funds for the Central Universities
• National Key Research and Development Program of China 2022YFE0109500
• National Key Research and Development Program of China 2021YFB3501401

Manuscript type: Author's version (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.5469

First published URL: https://doi.org/10.1063/5.0151431

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Updated at: 2025-05-09 08:30:33 +0900

Published on MDR: 2025-05-09 08:19:28 +0900