论文标题
s = 5/2二维方形瑞士抗王酸盐NAMNSBO4中的磁性排序特征性
Peculiarities of magnetic ordering in the S = 5/2 two-dimensional square-lattice antimonate NaMnSbO4
论文作者
论文摘要
正交化合物NAMNSBO4代表位于顶点共享氧气八面体中的磁Mn2+离子的平方网。使用磁敏感性，比热，磁化，电子自旋共振（ESR），核磁共振（NMR）和密度功能计算研究了其静态和动态磁性。热力学数据表明，在约55 K处建立了TN约44 K的远距离磁序，在大约55 K处是一个短距离。此外，观察到了磁化磁化强度的非平凡的磁滞回路，表明地面状态最可能是最可能倾斜的抗生物抗体动力学。在具有主要交换参数J = -5.3 K的2D平方晶格模型的框架中，磁化敏感性的温度依赖性很好地描述了，这与密度功能分析，NMR和ESR数据非常吻合。
An orthorhombic compound, NaMnSbO4, represents a square net of magnetic Mn2+ ions residing in vertex-shared oxygen octahedra. Its static and dynamic magnetic properties were studied using magnetic susceptibility, specific heat, magnetization, electron spin resonance (ESR), nuclear magnetic resonance (NMR) and density functional calculations. Thermodynamic data indicate an establishment of the long-range magnetic order with TN about 44 K, which is preceded by a short-range one at about 55 K. In addition, a non-trivial wasp-waisted hysteresis loop of the magnetization was observed, indicating that the ground state is most probably canted antiferromagnetic. Temperature dependence of the magnetic susceptibility is described reasonably well in the framework of 2D square lattice model with the main exchange parameter J = -5.3 K, which is in good agreement with density functional analysis, NMR and ESR data.
