Heat capacity and magnetic phase transitions of rare-earth orthoferrite HoFeO3 |
| |
Authors: | Ashis BhattacharjeeKazuya Saito Michio Sorai |
| |
Institution: | aResearch Center for Molecular Thermodynamics, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan |
| |
Abstract: | Heat capacity of two rare-earth orthoferrites HoFeO3 and LuFeO3 were measured between 1.8 and 200 K. A distinctly large and two small heat capacity anomalies were detected for HoFeO3 under zero magnetic field around 3.3, 53 and 58 K, respectively. The low-temperature anomaly with a peak at 3.3 K is due to the ordering of Ho3+ ions and the estimated magnetic entropy for this transition was favorably compared with the expected (R ln 2). Application of magnetic field significantly affects the positions and the magnitudes of the anomaly at 3.3 K. Energies of low-lying levels of the lowest J-term of Ho3+ ion were roughly estimated through analysis of the Schottky heat capacity. |
| |
Keywords: | A Magnetic materials A Inorganic compounds D Phase transitions D Specific heat |
本文献已被 ScienceDirect 等数据库收录! |