【摘要】 采用热处理的方法,使氮原子进入到 RTiFe₁₁（R=Y,Nd,Sm）的结构中去.利用 x 射线衍射和磁测量研究了 RTiFe₁₁N_x 的晶体结构和内禀磁性.x 射线衍射表明 RTiFe₁₁N_x 仍保持 RTiFe₁₁的四方结构（I4/mmm）.氮原子的加入使晶胞体织增大,Curie 温度升高,改变了磁晶各向异性.在 RTiFe₁₁N_x 化合物中,NdTiFe₁₁N_x的饱和磁化强度高,Curie 温度高,有高单轴磁晶各向异性.这些效应使 NdTiFe₁₁N_x具备了研制高矫顽力永磁体的潜力.更多还原

【Abstract】 The absorption of nitrogen in ternary compounds of the type RTiFe₁₁ has been studied,where R=Y,Nd,Sm.X-ray diffraction showed that the tetragonal structure（I4/mmm）is retained but that the unit cell volume is slightly increased.Furthermore,nitrogen absorption both increases the Curie temperature,and gives rise to a drastic changing of magnetocrystalline anisotropy in RTiFe₁₁N_x compounds.Among them,NdTiFe₁₁Nx now has high mag- netization,high Curie temperature and easy axis magnetocrytalline anisotropy potentially suitable for permanent magnet applications.更多还原