MAGNETIC PROPERTIES OF R3(Fe, Mo)29Nx (R=Sm OR Y) INTERSTITIAL NITRIDES
(Department of Materials Science and Engineering,Zhejiang University, Hangzhou 310027, P. R. China)
Abstract: R3(Fe,Mo)29Nx(R=Sm or Y) nitrides have been synthesized by gas phase reaction under an atmosphere of nitrogen. The nitrides retain the structure of parent compounds. The unit cell volume of the nitride is 4.7% for Sm3(Fe,Mo)29Nxcompound and 5.3% for Y3(Fe,Mo)29Nxcompound greater than that of corresponding parent. Introduction of nitrogenation leads to an increase of Curie temperaturesTCand saturation magnetization, and the Sm3(Fe,Mo)29Nxnitride exhibits uniaxial anisotropy with an anisotropy of 20.5 T at 4.2 K and 14.6 T at 300 K.
Key words: magnetic properties rare-earth transition-metal compounds gas phase reaction Curie temperature