Random magnetic anisotropy in a new compound Sm₂AgSi₃

2021/09/20 by Sahu, Baidyanath, Fobasso, R. Djoumessi, Strydom, Andre M.
#FOS: Physical sciences #Strongly Correlated Electrons (cond-mat.str-el)

paper · doi:10.48550/arxiv.2109.09608

Abstract

We report the experimental study on the structural and magnetic properties of a new ternary intermetallic compound Sm₂AgSi₃. The properties of the sample were investigated in detail by X-ray diffraction, dc-magnetization, and heat capacity measurements. The polycrystalline compound of Sm₂AgSi₃ crystallizes in the ThSi₂-type tetragonal structure (space group I₄₁/amd). The temperature-dependent dc-magnetization and heat capacity results demonstrate that the compound undergoes ferromagnetic behaviour with a Curie temperature (T_C) of 14 K. The large coercive field in hysteresis loops and the thermomagnetic irreversibility in the ferromagnetic region revealed that the compound exhibits a large magnetic anisotropy. The magnitude of the applied field and the coercivity obtained from the M-H loops corroborate with the thermomagnetic irreversibility in the magnetization data. The magnetic contribution of the heat capacity reveals a broad Schottky-type anomaly above T_C, due to the presence of the crystal electric field effect of \mathrmSm³⁺ in Sm₂AgSi₃.

Related

• Double magnetic phase transitions and magnetotransport anomalies in a\n new compound Gd_\2AgSi_\3
• Anisotropic spin-glass-like and quasi-one-dimensional magnetic behaviour in an intermetallic compound, Tb2PdSi3
• Complex single-site magnetism and magnetotransport in single-crystalline Gd₂AlSi₃
• Influence of symmetry on Sm magnetism studied on SmIr2Si2 polymorphs
• Complex Magnetic Phase Diagram of a Geometrically Frustrated Sm Lattice:\n SmPd2Al3 case