Abstract Orthochromite SmCrO3 is known to show spin reorientation around 34 K and which was assigned as transition from Γ4 to Γ2. Our work reports the spin reorientation transitions in a series of Ga-doped SmCrO3: the spin reorientation transition from Γ4 to Γ2 at TSR2 = 88 K and another spin reorientation transition of Γ2 to Γ1 at TSR1 = 15 K were observed simultaneously when the content of Ga is 30%. Importantly, the evolution of spin reorientation transitions from the single spin reorientation of Γ4 → Γ2 to double ones of Γ4 → Γ2 → Γ1, and then to the single one of Γ2 → Γ1 is caused by the increase of Ga doping concentration. The M-T and M-H measurements have been made to study the temperature and magnetic field dependence of these spin reorientation transitions. These temperatures and doping dependence of spin reorientation transitions in RCrO3 (R = rare earth or yttrium) can appeal to the magnetic switching devices design based on these findings.

中文翻译：

---

Ga掺杂SmCrO 3 中的自旋重定向磁跃迁

摘要 已知正铬铁矿 SmCrO3 在 34 K 附近显示自旋重新定向，并被指定为从 Γ4 到 Γ2 的过渡。我们的工作报告了一系列 Ga 掺杂 SmCrO3 中的自旋重定向跃迁：当Ga 为 30%。重要的是，自旋重定向从Γ4 → Γ2 的单一自旋重定向转变为Γ4 → Γ2 → Γ1 的双重自旋重定向，再到Γ2 → Γ1 的单一自旋重定向是由Ga 掺杂浓度的增加引起的。已经进行了 MT 和 MH 测量来研究这些自旋重定向转变的温度和磁场依赖性。