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Magnetic instabilities in Er 1 - x Y x Co 3 studied by NMR

Magnetic instabilities in Er 1 - x Y x Co 3 studied by NMR,10.1016/j.physb.2006.01.432,Veterinary Immunology and Immunopathology,H. Niki,T. Fukumura,H

Magnetic instabilities in Er 1 - x Y x Co 3 studied by NMR  
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The field dependence of 59Co NMR in ferrimagnetic Er1-xYxCo3 was measured up to 8T at 4.2K. For pure ErCo3 in fields perpendicular to the c axis the resonance frequencies change discontinuously between 2 and 3T due to a field induced metamagnetic transition. The transition is characterized by rotations of Er and Co magnetic moments away from the easy c-axis. The angles between the Co moments and the c axis at x=0.1 are obtained. The easy axis is found to be along the c axis for x=0 and 0.1, and inclined from the c axis for x=0.3 and 0.5.
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