The structure and uniaxial magnetocrystalline anisotropy of novel intermetallic compounds

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Abstract
The crystal structure and magnetic properties of new intermetallic compounds have been investigated by x-ray powder diffraction and magnetic measurement. The lattice parameters of with the rhombohedral -type structure are a = 8.4971 - 8.5006 Å, c = 12.3370 - 12.3424 Å. V atoms show a strong preference for occupying 6c crystallographic positions. The compounds are ferromagnetic. The Curie temperature decreases from 926 to 827 K and the saturation magnetic moment decreases from 22.5 to with x = 0.8 - 1.2. The compound exhibits favourable uniaxial anisotropy and the easy magnetization direction is parallel to the c axis. The anisotropy field is 19 kOe at 1.5 K for the compound. The reasons that does not exist and has uniaxial anisotropy are discussed.