MAGNETIC PHASE-DIAGRAM OF ND(FE,MO)12 ALLOYS

The magnetic phase diagram of the alloy series NdFe12-xMox (x= 1.0-2.5 ) is obtained. Below the Curie temperature, the ferromagnetic phase is divided into three regions: Uniaxial, canted 1, and canted 2. At a te mperature of T(sr1) (below 200 K) a spin reorientation transition (SRT ) was observed for all the samples, and at T(sr2) (above 200 K) anothe r SRT was found for samples with Mo concentration 1. 5 <x < 1. 75. At room temperature the easy direction of magnetization (EDM) of NdFe12-x Mox, changes from the c axis to a canted structure with increasing Mo concentration, with a critical composition of x=1.56. At low temperatu res (below 100 K) all NdFe12-xMox compounds exhibit a canted moment st ructure.