基于晶场理论，我们模拟了Kawasaki小组测量的磁化率倒数与温度关系曲线，使用点电荷晶场模型得到了伪二元合金CePt1-x，Rhx（0≤x≤0．9）的晶场分裂能和相应波函数．计算表明，Kramers离子Ce^3＋在晶场效应的作用下，基态简并部分消除得到了三个双重态，模拟得到的化合物的磁化率倒数与温度关系曲线与实验曲线吻合较好．本研究为进一步研究CePt1-xRhx的磁结构提供了参考．
Based on the crystalline electric field （CEF） theory, we simulated the temperature dependence of in- verse magnetic susceptibility measured by Kawasaki group. Using the simple point-charge CEF model, we obtained CEF splitting levels and corresponding wave functions for pseudo-binary alloys CePt1-xRhx （0≤x≤0. 9）. The calculated results indicated that Kramers ion Cea＋ have three doublet ground state, our results are in good agreement with the experimental data. This work provided a reference for the nature of magnetic structures in CePt1-xRhx.
参考文献
| [1] | 路莹,张蕾,薛绛琴,路庆凤.Ce3Rh3Si2和CeRh3Si2的磁性模拟和晶场效应研究[J].低温物理学报,2009(03):245-248. |
| [2] | Kawasaki I;Tenya K;Yokoyama M;Amitsuka H .Quantum critical phenomena of ferromagnetic CePt1-xRhx[J].Physica, B. Condensed Matter,2008(5/9):1284-1286. |
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