Abstract The magnetic properties and magnetocaloric effect (MCE) in GdVO4 single crystal have been investigated systematically. In addition to the previously reported spin-flop transition at 1 T along the c-axis, other spin-flop transitions also occur along the a and b axes at 1.7 T. Meanwhile, prominent magnetic anisotropy is observed below the paramagnetic temperature, which leads to evident distinction of negative magnetic entropies along the a, b, and c axes. The maximum negative magnetic entropy −ΔSM along the three axes are 45.91, 46.17, and 56.03 J/kg × K, respectively, at H = 7 T. The anisotropic MCE between the c and a, b axes also induces large rotational MCE (RMCE) in the bc plane, with the maximum value −ΔSR, bc reaching 10.1 J/kg × K at H = 7 T. These remarkable MCE and RMCE values at low temperatures make the GdVO4 single crystal a potential candidate for applications in cryogenic magnetic refrigeration areas.

中文翻译：

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GdVO4单晶中的大旋转磁热效应

摘要 系统地研究了GdVO4单晶的磁性和磁热效应(MCE)。除了先前报道的沿 c 轴在 1 T 处的自旋触发器跃迁之外，其他自旋触发器跃迁也发生在 1.7 T 处沿 a 轴和 b 轴。同时，在顺磁温度以下观察到显着的磁各向异性，这导致沿 a、b 和 c 轴的负磁熵的明显区别。在 H = 7 T 时，沿三个轴的最大负磁熵 −ΔSM 分别为 45.91、46.17 和 56.03 J/kg × K。 c 和 a、b 轴之间的各向异性 MCE 也引起了大旋转 MCE（RMCE ) 在 bc 平面中，最大值 -ΔSR，bc 在 H = 7 T 时达到 10.1 J/kg × K。