What is it about?
The origin of uniaxial anisotropy in permalloy has been a long-standing mystery of scientific and practical importance. Permalloy possesses uniaxial magnetic anisotropy in the polycrystalline form which is also the case for many alloy systems. However, in the single crystal form most of the cubic materials present cubic anisotropy due to the symmetry of their lattice. In this work, it is shown atomic arrangement (or so-called order) in the single crystal can be manipulated to achieve lower symmetry that still presents uniaxial anisotropy.
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Why is it important?
Achieving well defined uniaxial magnetic anisotropy is one of the most important requirements of magnetic storage devices and magnetic field sensors such as AMR, GMR and PHE. Both of which are of practical importance in spintronics industry. Our study suggests a new method to prepare materials with single crystal quality and still offering well defined uniaxial magnetic anisotropy.
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This page is a summary of: Effect of atomic ordering on the magnetic anisotropy of single crystal Ni80Fe20, AIP Advances, March 2019, American Institute of Physics,
DOI: 10.1063/1.5088602.
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