Magnetic texture analysis of polycrystalline ferromagnetic materials
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A theory allowing the full determination of the texture function of a polycrystalline ferromagnet with cubic symmetry of the polycrystallites is developed. Standard group theoretical methods are used, which allow to make maximum use of the full symmetry of the system, without imposing any restriction on the generality of the problem. The magnetocrystalline anisotropy energy of the textured sample is expanded in spherical harmonics and the corresponding energy of the crystallites is expanded in a series of symmetry-adapted spherical harmonics. The texture function is expanded in a series of symmetry-adapted generalized spherical harmonics. A relation between the coefficients of these expansions is determined. It is shown that the texture function can be experimentally calculated using torque curves.
PACS75.30Gw 02.20+b 61.50-f
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