On the origin of the large magnetic anisotropy of rare earth-cobalt compounds

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, , Citation B Szpunar and P A Lindgard 1979 J. Phys. F: Met. Phys. 9 L55 DOI 10.1088/0305-4608/9/3/003

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1 Riso Nat. Lab., Roskilde, Denmark

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Abstract

Experimental data on the magnetocrystalline anisotropy in Co, YCo5, GdCo5, SmCo5 and Y2Co17 is analysed using a single-ion crystal field and isotropic exchange interaction. The large magnetic anisotropy at high temperatures in the alloys is due to significant deviations in the alloy lattices of the ratio c/a from the ideal square root (8/3) ratio.

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