Spin-glass state and ferromagnetic order in Cu(Ⅱ)-Fe(Ⅲ) cyanides

• 来源期刊: 中国物理(英文版)
• 关键词: spin glass exchange interaction ferromagnetic interaction magnetic Prussian blues
• 年，卷（期）: 2004,（5）
• 页码范围: 746-749
• 页数: 4页
• 语种: 英文

摘要

The static and dynamic magnetic properties of a Prussian blue analogue, molecular magnet Cu3Ⅱ[FeⅢ(CN)6]2.3NH3. 6H2O were investigated in detail. The H dependence of the linear AC susceptibility, the irreversibility in the field-cooled (FC) / zero-field-cooled (ZFC) magnetization (MFc/MzFc) and the relaxation of MZFC suggest that the magnetic system can be visualized as containing a ferromagnetic cluster of spin below TC, mixed with small spinglass clusters formed below temperature Tg less than TC. The observed magnetic properties are explained with a ferromagnetic-spin-glass phase model. The magnetic ordering of the sample occurs below 19.8K.