Magnetic Properties of Sm0.7Ho0.3Fe3(BO3)(4)

作者：Demidov A A^*; Gudim I A; Eremin E V

来源：Journal of Experimental and Theoretical Physics, 2012, 115(5): 815-828.

DOI：10.1134/S1063776112100020

The magnetic properties of a ferroborate single crystal of substituted composition Sm0.7H0.3Fe3(BO3)(4) with competing Sm-Fe and Ho-Fe exchange interactions are studied. The measured properties and effects are interpreted in terms of a general theoretical approach based on the molecular field approximation and calculations using the crystal field model for a rare-earth ion. The experimental temperature dependences of the initial magnetic susceptibility in the temperature range 2-300 K, the anomalies in the magnetization curves for B aEuro- c and B aSyen c in fields lower than 1.2 T, and the field and temperature dependences of magnetization in fields lower than 9 T are described. The crystal field parameters and the parameters of the R-Fe and Fe-Fe exchange interactions are determined during the interpretation of the experimental data. DOI: 10.1134/S1063776112100020

• 出版日期2012-11