Ag（2）VOP（2）O（7）的磁性：一个出乎意料的自旋二聚体体系
Magnetic properties of Ag(2)VOP(2)O(7): an unexpected spin dimer system
摘要：
通过磁化率测量和电子结构计算研究了钒磷酸银Ag（2）VOP（2）O（7）的磁性。尽管层状晶体结构表明1D或2D磁性行为，但该化合物可被理解为自旋二聚体系统。的磁化率的拟合表明约30 K的二聚体内相互作用与计算结果完全一致。我们的研究强调了在解释实验数据的结构基础上可能存在的陷阱，并指出了微观模型的重要性，为理解钒磷酸盐的磁性。
英文摘要：
Magnetic properties of the silver vanadium phosphate Ag(2)VOP(2)O(7) are studied by means of magnetic susceptibility measurements and electronic structure calculations. In spite of the layered crystal structure suggesting 1D or 2D magnetic behavior, this compound can be understood as a spin dimer system. The fit of the magnetic susceptibility indicates an intradimer interaction of about 30 K in perfect agreement with the computational results. Our study emphasizes the possible pitfalls in interpreting experimental data on structural basis only and points out the importance of microscopic models for the understanding of the magnetic properties of vanadium phosphates.
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