Department of Physics, University College of Science, M L Sukhadia University, Udaipur 313001, India.
J Phys Condens Matter. 2011 Sep 28;23(38):386002. doi: 10.1088/0953-8984/23/38/386002. Epub 2011 Sep 8.
The temperature dependent spin momentum densities of Co(1.8)NiGa(1.2) and Co(2)Ni(0.76)Ga(1.24) alloys have been measured using the magnetic Compton scattering technique. The individual contributions of constituents in the formation of the total spin moment are also calculated using Compton line shape analysis. The magnetic Compton data when compared with the magnetization data obtained using a vibrating sample magnetometer show a negligible orbital contribution. The spin moments deduced from the experimental Compton data are compared with the theoretical results obtained from the full potential linearized augmented plane wave method and are found to be in good agreement. The origin of the magnetism in both alloys is also described in terms of the e(g) and t(2g) contributions of Ni and Co.
使用磁 Compton 散射技术测量了 Co(1.8)NiGa(1.2)和 Co(2)Ni(0.76)Ga(1.24)合金的温度相关自旋动量密度。还使用 Compton 线形状分析计算了组成部分在总自旋矩形成中的单独贡献。将磁 Compton 数据与使用振动样品磁强计获得的磁化数据进行比较，结果表明轨道贡献可以忽略不计。从实验 Compton 数据推断出的自旋矩与全势能线性化增广平面波方法获得的理论结果进行比较，结果发现两者吻合得很好。还根据 Ni 和 Co 的 e(g)和 t(2g)贡献描述了这两种合金的磁性起源。
