Magnetic Properties of Au₄V Single Crystal

Abstract

Single crystal of ordered Au₄V was prepared to reveal the intrinsic magnetic properties. The magnetizations along the three directions [100], [011] and [111] for the original fcc lattice were measured in a temperature range 4.2 K to 300 K under magnetic field up to 90 kOe. A remarkable field cooling effect of the magnetization was interpreted by a crystal and magnetic domain model. Thus the moment ca. 1 μ_B per V atom and the large uniaxial anisotropy energy, 1.52×10⁷ erg/cm³ (6.3 cm⁻¹ per V atom), were determined at 4.2 K. The magnetic properties of the poly and single crystals were compared. The electrical resistivities of the ordered and disordered Au₄V were measured. The origin of the anisotropy and the magnetic property were discussed on a basis of itinerant electron scheme.