Crystal field levels and magnetic anisotropy in the kagome compounds Nd3Sb3Mg2O14, Nd3Sb3Zn2O14, and Pr3Sb3Mg2O14

Article

关键词: LATTICE;    STATE;    ORDER;    IONS;    PR;    EU;    SM;   

DOI  :  10.1103/PhysRevB.98.134401

来源: SCIE

【 摘 要 】

We report the crystal field levels of several newly discovered rare-earth kagome compounds: Nd3Sb3Mg2O14, Nd3Sb3Zn2O14, and Pr3Sb3Mg2O14. We determine the crystal electric field (CEF) Hamiltonian by fitting to neutron scattering data using a point charge Hamiltonian as an intermediate fitting step. The fitted Hamiltonians accurately reproduce bulk susceptibility measurements, and the results indicate easy-axis ground-state doublets for Nd(3)Sb(3)Mg(2)O(14 )and Nd3Sb3Zn2O14 and a singlet ground state for Pr3Sb3Mg2O14. These results provide the groundwork for future investigations of these compounds and a template for CEF analysis of other low-symmetry materials.

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