Magnetic properties and magnetoresistance of HfFe6Ge6-type Dy1-xGdxMn6Ge6 (x=0.1-0.6) compounds

• 来源期刊: 中国物理（英文版）
• 关键词: magnetic property magnetoresistance effect
• 年，卷（期）: 2003,（5）
• 页码范围: 562-565
• 页数: 4页
• 语种: 英文

摘要

The magnetic properties and magnetoresistance effects of Dy1-xGdxMn6Ge6 (x=0.1-0.6) compounds have been studied by magnetic properties and resistivity measurements in applied magnetic fields up to 5T. The compounds with x=0.1, 0.2, 0.4 and 0.5 order antiferromagnetically at 425,428, 430 and 432K, respectively, and there are second magnetic phase transitions below 100K. The compound with x=0.6 exhibits a transition from ferrimagnetic to antiferromagnetic,then to ferrimagnetic state again with decreasing temperature. Furthermore, it displays a field-induced metamagnetic transition, and its threshold field decreases with increasing temperature. The magnetoresistance curve of the compound with x=0.6 in applied magnetic fields up to 5T is presented and the magnetoresistance effects are related to the metamagnetic transitions.