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Magnetic behavior of the spin-chain compound, Ca3CuRuO6

机译：自旋链化合物Ca3CuRuO6的磁行为

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摘要

A spin-chain compound, Ca3CuRuO6, forming in a K4CdCl6-derived monoclinic structure, has been synthesized via solid state route and subjected to magnetization (M and heat capacity (C) measurements. This compound is found to undergo magnetic ordering (T-o) around 40 K. However, the magnitude of the paramagnetic Curie temperature (theta(p)) is large (-277 K). Very small ratio of T-o/theta(p) suggests the existence of magnetic frustration presumably arising from the triangular arrangement of antiferromagnetically coupled ferromagnetic chains. This frustration however does not lead to spin-glass freezing at low temperatures, as there is no prominent feature in the AC chi around 40 K. Considering that the peak in C(T) around 40 K is very weak, we conclude that this material exhibits inhomogeneous magnetism despite being stoichiometric, possibly as a manifestation of some degree of Ca-Cu site-disorder. (c) 2006 Elsevier B.V. All rights reserved.
机译：通过固态途径合成了自旋链化合物Ca3CuRuO6，该化合物形成于K4CdCl6的单斜晶结构中，并经过磁化（M和热容量（C）的测量），发现该化合物在周围发生磁有序化（To）。但是，顺磁性居里温度（theta（p））的大小较大（-277 K），To / theta（p）的比率非常小，表明存在磁阻，可能是由于反铁磁的三角形排列引起的耦合的铁磁链，但是这种挫折并不会在低温下导致旋转玻璃冻结，因为40 K附近的AC chi中没有显着特征。考虑到40 K附近的C（T）峰非常弱，我们结论：尽管这种材料是化学计量的，但仍表现出不均匀的磁性（c）2006 Elsevier BV保留所有权利。

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