论文标题
Ludwigite单晶Cu2mnbo5的各向异性磁联性特性
Anisotropic Magnetocaloric Properties of The Ludwigite Single Crystal Cu2MnBO5
论文作者
论文摘要
我们介绍了在温度范围为60-350 K的温度范围内以及最高18 koe的磁场中，对Ludwigite晶体Cu2mnbo5的特定热和磁性特性进行了彻底研究的结果。发现在低于居里温度（92 K）的温度下，容量具有线性温度依赖性行为，这与二维抗铁磁相互作用的二维抗铁磁相互作用的占主导地位。在95-160 K的温度范围内观察到容量的温度独立性，这可以归因于Wigner玻璃相的激发。通过直接测量或使用容量数据进行直接测量或间接方法评估磁电效应（即绝热温度变化）。由于其强烈的磁晶各向异性，各向异性MCE或旋转MCE在CU2MNBO5中观察到。观察到TC附近的旋转MCE的最小值，并可能与顺磁敏感性的各向异性有关。
We present the results of a thorough study of the specific heat and magnetocaloric properties of a ludwigite crystal Cu2MnBO5 over a temperature range of 60 - 350 K and in magnetic fields up to 18 kOe. It is found that at temperatures below the Curie temperature (92 K), capacity possesses a linear temperature-dependent behavior, which is associated with the predominance of two-dimensional antiferromagnetic interactions of magnons. The temperature independence of capacity is observed in the temperature range of 95 - 160 K, which can be attributed to the excitation of the Wigner glass phase. The magnetocaloric effect (i.e. the adiabatic temperature change) was assessed through a direct measurement or an indirect method using the capacity data. Owing to its strong magnetocrystalline anisotropy, an anisotropic MCE or the rotating MCE is observed in Cu2MnBO5. A deep minimum in the rotating MCE near the TC is observed and may be associated with the anisotropy of the paramagnetic susceptibility.
