Magnetic properties of the novel Y3(Fe,Cr)29 single crystal

A novel Y-3(Fe,Cr)(29) single crystal with the Nd-3(Fe,Ti)(29)-type structure has been successfully prepared using the Czochralski method followed by a heat treatment on a Y2Fe15Cr2 single crystal with a Th2Ni17-type structure. The magnetization curves measured along the easy and hard direction in the temperature range from 1.5 to 293 K are presented. The lattice parameters of the crystal are a = 10.645 Angstrom, b = 8.455 Angstrom, c = 9.678 Angstrom and beta = 97.462 degrees, respectively. The Curie temperature is 410 K. The saturation magnetizations decrease with increasing temperatures and are in good agreement with the spin-wave relation. The average magnetic moment is 1.54 mu(B) per Fe atom at 1.5 K. The crystal keeps a planar anisotropy from 1.5 to 293 K. The magnetocrystalline anisotropy constants at 1.5 K are K-1 = -0.87 x 10(6) J m(-3) and K-2 = 0.19 x 106 J m(-3).