1. Regulation of the spin reorientation phase transitions in Sm0.5Y0.5FeO3 single crystals.
- Author
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Zheng, Shiyun, Xu, Kun, Chen, Qi, Fan, Xin, Zhao, Jiao, Yang, Haohao, Li, Hanwei, Liu, Hongwei, Kang, Yanru, Zhang, Yuanlei, Wei, Shengxian, Li, Zhe, Cao, Yiming, and Wang, Fangbiao
- Subjects
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PHASE transitions , *NUCLEAR spin , *SPIN crossover , *MAGNETIC field effects , *TRANSITION temperature - Abstract
The Sm 0.5 Y 0.5 FeO 3 single crystal was successfully synthesized using the optical floating zone method. A systematic study was conducted to investigate the spin reorientation transition process in the Sm 0.5 Y 0.5 FeO 3 single crystal, as well as the effects of applied magnetic fields and isostatic pressure on the spin reorientation transition. Analysis of the M (T) curves revealed that the spin reorientation transition process in the single crystal occurs from Γ 4 to Γ 2 between 310 and 350 K. In addition, the spin reorientation phase transition is quite sensitive to magnetic fields and isostatic pressure, particularly when the isostatic pressure exceeds 0.81 GPa, where the rare Γ 3 phase is observed. The M (T) curve under different measurements of isostatic pressure indicates that the spin reorientation phase transition occurs in the sequence of Γ 4 → Γ 2 + Γ 3 + Γ 4 → Γ 2 + Γ 3 with a decrease in temperature once the isostatic pressure exceeds ∼0.72 GPa. Notably, to provide a more comprehensive description of the changes in phase transition configurations with temperature under different isostatic pressure, a detailed phase diagram was established. These findings present new avenues and possibilities for the development of ultrafast spintronic devices and optical magnetic memory systems operating at near room temperature. • Sm 0.5 Y 0.5 FeO 3 single crystals are grown by optical floating zone method. • Laue and X-ray studies confirmed high crystalline quality of the single crystal. • Magnetic fields and isostatic pressures can effectively regulate the spin reorientation phase transition. • The spin reorientation phase transition under high pressure occurs in the sequence Γ 4 → Γ 2 + Γ 3 + Γ 4 → Γ 2 + Γ 3. • A detailed phase diagram was established to depict the spin configuration vary with temperature and isostatic pressure. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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