Magnetic Properties of Perovskites Containing Strontium : I. Strontium-Rich Ferrites and Cobaltites
Magnetic Properties of Perovskites Containing Strontium : I. Strontium-Rich Ferrites and Cobaltites
复制标题
DOI：
10.1143/jpsj.12.515
复制
发表时间：
1957-05
影响因子：
1.7
通讯作者：
Hiroshi Watanabe
中科院分区：
文献类型：
--
作者：
Hiroshi Watanabe
本文测量了真空和氧气烧结（La, Sr）（Fe/Co）O x试样的磁化率和电导率。含有四价磁性离子的样品通常比只含有三价磁性离子的样品具有更小的居里含量。这一事实和前一种样品的高电导率有力地支持了双重交换和通常交换机制在这些化合物中的联合作用。由于双重交换，磁性离子的自旋平行排列部分或完全被强负三价-三价相互作用的存在所阻碍。
Magnetic susceptibilities and electrical conductivities of (La, Sr)(Fe/Co)O x samples sintered in vacuo or in oxygen stream are measured here. Samples containing tetravalent magnetic ions in general have Curie contants smaller than those containing only trivalent ions. This fact and the high conductivity in the former specimens strongly support the combined effect of the double exchange and the usual exchange mechanism in these compounds. The parallel alignment of spins of magnetic ions due to double exchange is partly or completely hindered by the presence of the strongly negative trivalent-trivalent interionic interactions.