Magnetism, Superconductivity and Anisotropy in Unusual Materials and Structures

异常材料和结构中的磁性、超导性和各向异性

• 批准号: 9705414
• 负责人: John Markert
• 金额: $ 18.45万
• 依托单位: University of Texas at Austin
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-08-01 至 2001-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9705414&HistoricalAwards=false
• 关键词: Magnetism; Superconductivity; Anisotropy; Unusual; Materials

w:\awards\awards96\num.doc 9705414 Markert This experimental research project is devoted to exploring unusual phenomena in anisotropic magnetism and superconductivity. Emphasis is placed on the relation between materials structure and electronic properties. The work is materials-based and involves synthesis of new materials, growth of single crystals and of epitaxial films, and microstructure manipulation. A wide range of experiments to be employed includes SQUID magnetometry; magnetic, elastic and dissipative measurements using high-Q oscillators; surface analysis, NMR, and heat capacity. Specific topics will include magnetic excitations and anisotropy of infinite layer cuprates; competition between Kondo/heavy fermion behavior and 3d transition metal magnetism in two Ce-based compounds; and effects of surface structure on spin excitations in ultrathin ferromagnetic films, including the engineering of specific magnon dispesion features. In this work, the unity in one project of a wide array of synthesis, charcterization and analytical techniques will provide the graduate students with an excellent training in areas of materials science and physics. %%% This experimental research project is centered on discovering the relations between structure of materials and those electronic properties which may be particularly useful in technology, including magnetic properties and superconductivity. The work includes synthesis of novel materials in the form of single crystals, epitaxial films and will also explore effects of microstructure manipulation. Methods will include use of sensitive magnetic property measurements, surface analysis, and nuclear magnetic resonance. Results from this research may include unusual new effects or structures which may find application in technology. This research project is interdisciplinary in nature and involves undergraduate and graduate students who will be excellently trained to enter positions in industry, government or education. ***

w：\awards\awards96\num.doc 9705414 Markert 这个实验研究项目致力于探索不寻常的 现象 在 向异性 磁性 和超导性。 重点放在材料结构和电子性能之间的关系。 这项工作是以材料为基础的，涉及新材料的合成、单晶和外延膜的生长以及微观结构的操纵。一个广泛的实验要采用包括SQUID 磁力测定法; 磁性的， 弹性 和 使用高Q振荡器的耗散测量;表面分析，NMR和热容。具体的主题将包括磁激发和各向异性的无限层铜氧化物;近藤/重费米子行为和3D过渡金属磁性在两个铈基化合物之间的竞争;和表面结构对自旋激发的影响在铁磁薄膜，包括特定的磁振子dispesion功能的工程。本工作 在一个项目中，广泛的合成、表征和分析技术的统一将提供 研究生在各个领域都受过良好的训练， 材料科学和物理学。 本实验研究项目的中心是发现材料的结构与可能在技术上特别有用的电子特性之间的关系，包括磁性和超导性。 这项工作包括以单晶、外延薄膜的形式合成新材料，还将探索微结构的影响。 操纵 方法将包括 使用 灵敏的磁性测量、表面分析和核磁共振。 这项研究的结果可能包括不寻常的新效应或结构， 找到应用 在 技术. 这 研究 项目 是跨学科的性质，涉及本科 和研究生谁将得到良好的培训，进入工业，政府或教育职位。 ***