Neutron scattering and μSRμSR studies on the skutterudite Pr0.73Fe4Sb12Pr0.73Fe4Sb12
Neutron scattering and μSRμSR studies on the skutterudite Pr0.73Fe4Sb12Pr0.73Fe4Sb12
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方钴矿 Pr0.73Fe4Sb12Pr0.73Fe4Sb12 的中子散射和 μSRμSR 研究
DOI：
10.1016/j.jmmm.2006.10.046
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发表时间：
2007
期刊：
影响因子：
--
通讯作者：
Jozeph Park
中科院分区：
文献类型：
--
作者：
E. Bauer;A. Grytsiv;P. Rogl;W. Kockelmann;A. Hillier;E. Goremychkin;D. Adroja;Jozeph Park
弹性和非弹性中子散射以及μSR实验在ISIS远高于和低于Pr0.73Fe4Sb12的有序化温度下进行。我们的μSR研究没有揭示出长程磁有序的明显迹象。非弹性中子散射表明，磁性三重态Γ4（2）是系统的基态，其次是单重态Γ1，大约在Γ4（2）之上25K。只有在填充方钴矿晶体电场（CEF）的哈密顿量模型比简单立方对称的模型更真实、更正确的情况下，才能解释Γ 1的非零强度。
Elastic and inelastic neutron scattering as well as μSR experiments were carried out at ISIS well above and below the ordering temperature of Pr0.73Fe4Sb12. Our μSR study does not reveal a clear sign of long range magnetic ordering. Inelastic neutron scattering reveals the magnetic triplet Γ4(2)to be the ground state of the system, followed by the singlet Γ1, about 25K above Γ4(2). The non-vanishing intensity of Γ1can only be explained if a more realistic and correct model of the crystal electric field (CEF) Hamiltonian for filled skutterudites is used, instead of that for simple cubic symmetries.