The magnetic phase diagram of DyFe12-xMox (1.00 <= x <= 3.00)

The magnetocrystalline anisotropy and magnetic structure of DyFe12-xMox (1. 00 less than or equal to x less than or equal to 3.00) have been investigat ed in detail by X-ray diffraction, thermomagnetic analysis, AC magnetic sus ceptibility, singular point detection technique and angular-magnetization m easurement. A magnetic phase diagram of DyFe12-xMox (1.00 less than or equa l to x less than or equal to 3.00) has been proposed. At room temperature, all DyFe12-xMox compounds exhibit uniaxial anisotropy. At low temperature, a spin reorientation transition of axis-to-cone was observed for DyFe12-xMo x compounds with low Mo concentration, x<2.00. The spin reorientation tempe rature decreases with increasing Mo concentration. For DyFe12-xMox compound s with high Mo concentration, magnetohistory effects were observed below 48 K. (C) 1999 Elsevier Science S.A. All rights reserved.