Hyperfine Interactions Studies of Novel Forms of Magnetic Order

新型磁序形式的超精细相互作用研究

• 批准号: 8723033
• 负责人: Christoph Hohenemser
• 金额: $ 25.91万
• 依托单位: Clark University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-05-15 至 1992-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8723033&HistoricalAwards=false
• 关键词: Hyperfine; Interactions; Studies; Novel; Forms

Professor Hohenemser will examine the effects of non-trivial randomness, finite size dynamics, and the role of magnetism in high temperature oxide superconductors as parts of the research on novel forms of magnetic order. The Mossbauer spectroscopy and perturbed angular correlations of gamma rays are techniques where the investigator has shown their usefulness to study magnetic order and which can be complementary to inelastic scattering. Specifically the research will include: 1) measurements to fit the random field Ising model in Fe1-xZnxF2 below Tc; 2) magnetic order for competing random anisotropy interactions in rare-earth intermetallic compounds; 3) finite size dynamics in graphite intercalated magnetic compounds and; 4) magnetic order in La2 La2CuO4-x and related compounds. xxx

作为新形式磁序研究的一部分，Hohenemser教授将研究高温氧化物超导体中非平凡的随机性、有限尺寸动力学和磁性的作用。穆斯堡尔谱学和伽马射线的微扰角关联是研究人员已经证明了它们在研究磁序方面的有用的技术，它们可以补充非弹性散射。具体包括：1)在Fe1-xZnxF2中T_c以下符合随机场伊辛模型的测量；2)稀土金属间化合物中竞争随机各向异性相互作用的磁序；3)石墨层间磁性化合物中的有限尺寸动力学；4)La_2La_2CuO_4-x及其相关化合物中的磁序。XXX