EFFECTS OF COBALT ON THE SPIN REORIENTATION TEMPERATURE OF RARE-EARTH ORTHOFERRITES
LeGrand G. Van Uitert, R. C. Sherwood, E. M. Gyorgy, W.H. Grodkiewicz · Applied Physics Letters · 1970
Small substitutions of Co for Fe in the orthorhombic yttrium and rare-earth orthoferrites greatly reduce uniaxial anisotropy. A percent of Co generally suffices to reorient the net moment from the c axis to the a axis at room temperature. The effect is at least two orders of magnitude greater than that for Sm substitution for other rare-earth ions.