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通过X射线衍射.磁测量和M(?)ssbauer谱测定了Nd(Fe1-Cox)10V2的结构和磁性.结果表明,Nd(Fe1-xCox)10V2(x=0,0.05,0.10,0.15,0.20)化合物的晶体结构均为ThMn12型结构;随着 Co含量x的增大,晶格常数将单调减少.Co原子的替代将导致化合物各个Fe晶位上的磁超精细场值Bhf逐渐增加.Co部分取代Nd(Fe1-xCox)10V2中的Fe原子时.将择优占据8i铁晶位.取向样品NdFe10V2的热磁曲线和变温M(?)ssbauer谱研究结果表明.该化合物在T=120K条件下存在自旋重取向现象.
The structure and magnetic properties of Nd (Fe1-Cox) 10V2 were measured by X-ray diffraction, magnetic measurements and M (?) Ssbauer spectroscopy. The results show that Nd ) Crystal structure are all ThMn12 type structure.The lattice constant decreases monotonously with the increase of Co content x.The substitution of Co atom will lead to the increase of the magnetic hyperfine field Bhf of each Fe crystal in the compound. Partial replacement of Fe atoms in Nd (Fe1-xCox) 10V2 will preferentially occupy the 8i iron crystal.The results of thermomagnetic curve and temperature change M (?) Ssbauer spectra of oriented sample NdFe10V2 show that when the compound is at T = 120K Spin reorientation exists.