Nano-magnetism of magnetostriction in Fe35Co65

The nature of the large magnetostriction in body-centered Fe-based solid solutions has been widely discussed in the literature. Here, we use a combination of magnetostriction, magnetization, torque, and transmission electron microscopy measurements of specially annealed Co65Fe35 to show that the mag...

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Bibliographic Details
Published in:Applied physics letters 2014-03, Vol.104 (9)
Main Authors: Lisfi, A., Ren, T., Khachaturyan, A., Wuttig, M.
Format: Article
Language:English
Subjects:
Anisotropy
Applied physics
Chemical precipitation
Magnetism
Magnetostriction
Precipitates
Solid solutions
Transmission electron microscopy
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Summary:The nature of the large magnetostriction in body-centered Fe-based solid solutions has been widely discussed in the literature. Here, we use a combination of magnetostriction, magnetization, torque, and transmission electron microscopy measurements of specially annealed Co65Fe35 to show that the magnetostriction is caused by coherent uniaxial nano-precipitates. We show further that these nano-precipitates lower the magnetocrystalline anisotropy in these alloys to K1 = −2.16 × 104 J/m3.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4866183