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Calculation of the crystal field and paramagnetic susceptibility of intermetallic compounds (TbxY1-x)Cu2 and Tb(CuxNi1-x)2

M Andrecut, I Pop and I Burda

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The crystal field parameters B20 and B22 of antiferromagnetic single crystals of rare earth intermetallic compounds (TbxY1-x)Cu2 (x=1,0.8,0.6,0.4,0.2,0.1,0.05) and Tb(CuxNi1-x)2 (x=1,0.95,0.9,0.8,0.7) were calculated from the least-squares fit to the reciprocal paramagnetic susceptibility along principal axes. The results of the calculation are in good agreement with the experimental values estimated from the anisotropic paramagnetic Curie temperatures on the basis of the molecular field approximation. In the paramagnetic state strong anisotropy in the susceptibilities along each axis appears, indicating significant crystalline electric field (CEF) effects.


PACS

75.50.Ee Antiferromagnetics

75.30.Cr Saturation moments and magnetic susceptibilities

75.20.-g Diamagnetism, paramagnetism, and superparamagnetism

75.30.Kz Magnetic phase boundaries (including magnetic transitions, metamagnetism, etc.)

75.30.Gw Magnetic anisotropy

Subjects

Condensed matter: electrical, magnetic and optical

Dates

Issue 7 (14 July 1993)



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