MAGNETIC PROPERTIES OF R₃（Fe,Mo）₂₉N_x（R=Sm OR Y）INTERSTITIAL NITRIDES

MAGNETIC PROPERTIES OF R 3(Fe, Mo) 29 N x (R=Sm OR Y) INTERSTITIAL NITRIDES

ＩＮＴＲＯＤＵＣＴＩＯＮＴｈｅＲ３（Ｆｅ，Ｍ）２９（Ｒ＝ｒａｒｅｅａｒｔｈ；Ｍ＝Ｔｉ，Ｖ，Ｍｎ，Ｍｏ，ｅｔｃ）ｃｏｍｐｏｕｎｄｓａｒｅｎｅｗｌｙｄｉｓｃｏｖｅｒｅｄｒａｒｅｅａｒｔｈｉｒｏｎｉｎｔｅｒｍｅｔａｌｉｃｓ．Ｔｈｅｙａｌｍｏｓｔｅｘｉｓｔ...

R 3(Fe,Mo) 29 N x (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 Sm 3(Fe,Mo) 29 N x compound and 5.3% for Y 3(Fe,Mo) 29 N x compound greater than that of corresponding parent. Introduction of nitrogenation leads to an increase of Curie temperatures T C and saturation magnetization, and the Sm 3(Fe,Mo) 29 N x nitride exhibits uniaxial anisotropy with an anisotropy of 20.5 T at 4.2 K and 14.6 T at 300 K.