铁磁性
尖晶石
居里温度
材料科学
离子
空位缺陷
磁矩
晶体结构
凝聚态物理
晶格常数
格子(音乐)
结晶学
饱和(图论)
铁磁性
磁化
化学
磁场
物理
冶金
衍射
组合数学
光学
量子力学
数学
有机化学
声学
作者
J. Krok‐Kowalski,H. Rej,T. Groń,J. Warczewski,T. Mydlarz,I. Okońska‐Kozłowska
标识
DOI:10.1016/0304-8853(94)90719-6
摘要
All the compounds under study show the spinel normal structure. The lattice parameters decrease with an increase in the Cu concentration. The samples with low Cu concentrations (x ≤ 0.2) exhibit ferrimagnetic ordering and Curie temperatures of 150 K. The samples with high Cu concentrations (x ≥ 0.9) are ordered ferromagnetically, and their Curie temperatures are much higher and close to 480 K. Moreover, for the four samples under investigation one can observe a significant lowering of the saturation magnetic moment in comparison with the theoretical one. This lowering seems to be connected with the high degree of defects in the crystal structure. An attempt is made to interpret this fact with the use of the vacancy parameter.
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