Structure dependence of magnetic properties in yttrium iron garnet by metal-organic decomposition method

• 来源期刊: 中国物理B（英文版）
• 关键词: yttrium iron garnet metal-organic decomposition method M(o)ssbauer spectrometer magnetic materials
• 年，卷（期）: 2017,（5）
• 页码范围: 362-366
• 页数: 5页
• 语种: 英文
• DOI: 10.1088/1674-1056/26/5/057501

摘要

The yttrium iron garnet (YIG) samples are prepared at different temperatures from 900 ℃ to 1300 ℃ by the metalorganic decomposition (MOD) method.The chemical composition and crystal structure of the samples are studied by scanning electron microscope (SEM),XRD,and M(o)ssbauer spectrometer.It is shown that the ratio of ferric ions on two types of sites,the octahedral and the tetrahedral,is increased with the sintering temperature.At 1300 ℃,the pure garnet phase has been obtained,in which the ferric ions ratio is 2∶3 leading to the minimum magnetic coercivity and maximum saturation magnetization.These results provide a route to synthesize pure YIG materials as the basic materials used in various spintronics applications.