Phase relations of R-T-M ternary system, crystal structure and magnetic properties of R（T, M）₁₃ compounds （R = light rare earth; T = Co, Fe; M = Al, Si）^* （ Ⅱ ）——Crystal structure and magnetic properties of R （T, M）₁₃ compounds

【摘要】 <正> The first part has been published in Progress in Natural Science, 1996, 6（6）. In the first part of this paper the experimental procedures and the phase relations of R-T-M ternary systems were reported. Here the dependences of the formation of R （T, M）₁₃-type compounds and the crystal structure on compositions and heat treatment conditions are presented. It is shown that the atomic ordering of substituting atoms leads to the transformation of the crystal structure of R（T,M）₁₃ compound from the cubic NaZn₁₃-type to its derivative ones. The effects of the crystal structure and the composition on the Curie temperature, saturation magnetization and magnetic crystalline anisotropy are discussed.更多还原