Studies of Unusual Ferromagnetic Materials

异常铁磁材料的研究

基本信息

  • 批准号:
    0101318
  • 负责人:
  • 金额:
    $ 29.27万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Continuing Grant
  • 财政年份:
    2001
  • 资助国家:
    美国
  • 起止时间:
    2001-06-01 至 2005-05-31
  • 项目状态:
    已结题

项目摘要

This individual investigator research project includes two research thrusts related to the properties of unusual ferromagnetic materials in which the magnetic and electronic properties are strongly coupled. The first research thrust will be an investigation of phenomena related to phase separation in the "colossal magnetoresistance" perovskite manganites. Recent experimental and theoretical work has indicated that intrinsic magnetoelectronic phase separation is an important element of the physics of these materials, and the research will investigate resultant novel phenomena. The second research thrust will be an investigation of the transport and magnetic properties of thin films of ferromagnetic (Ga,Mn)As and MnAs. The basic physics of these materials (which are semiconducting and metallic, respectively) will be probed through magnetic and magnetotransport studies of the pure materials and heterostructures incorporating these ferromagnets with other magnetic and non-magnetic materials. The educational component of the project will involve the dissertation work of at least one graduate student and the active participation of undergraduates in the laboratory. These students will acquire knowledge and skills that will be use in future careers whether in academia, industrial, or government laboratories. %%%This individual investigator project centers on two different research thrusts related to the properties of unusual magnetic materials which are ferromagnetic, i.e. displaying a macroscopic magnetic moment. The specific materials studied are of particular interest because their magnetism is strongly connected to their electronic properties, and advances in the fundamental understanding of this coupling could potentially contribute to "spintronic" technological applications which exploit a combination of magnetic and electronic properties. The first research thrust will be an investigation of phenomena related to the coexistence of two different types of magnetic and electronic phases within a class of compounds known as the "colossal magnetoresistance" perovskite manganites. The second research thrust will be an investigation of the transport and magnetic properties of thin films of ferromagnetic (Ga,Mn)As and MnAs which both can be grown epitaxially on the commonly used semiconductor GaAs and thus may have more immediate technological importance. The educational component of the proposed research will involve the dissertation work of at least one graduate student and the active participation of undergraduates in the laboratory. The training that these students obtain will be valuable for future careers in industry, government, or academia.***
这个个人研究项目包括两个与不寻常的铁磁材料的性质有关的研究方向,其中磁性和电子性质是强耦合的。 第一个研究重点将是在“巨磁阻”钙钛矿锰氧化物相分离相关的现象的调查。最近的实验和理论工作表明,本征磁电子相分离是这些材料的物理学的一个重要因素,研究将调查由此产生的新现象。第二个研究重点将是铁磁(Ga,Mn)As和MnAs薄膜的输运和磁性的调查。 这些材料(分别是半导体和金属)的基本物理将通过纯材料和异质结构的磁性和磁输运研究,将这些铁磁体与其他磁性和非磁性材料。 该项目的教育部分将涉及至少一名研究生的论文工作以及本科生在实验室的积极参与。 这些学生将获得将在未来的职业生涯中使用的知识和技能,无论是在学术界,工业界还是政府实验室。这个个人研究项目集中在两个不同的研究方向,与铁磁性的不寻常磁性材料的性质有关,即显示宏观磁矩。 所研究的特定材料特别令人感兴趣,因为它们的磁性与它们的电子特性密切相关,并且对这种耦合的基本理解的进展可能有助于利用磁性和电子特性相结合的“自旋电子”技术应用。第一个研究重点将是调查与一类被称为“巨磁阻”钙钛矿锰氧化物的化合物中两种不同类型的磁性和电子相共存有关的现象。 第二个研究重点将是铁磁(Ga,Mn)As和MnAs薄膜的传输和磁性能的调查,这两者都可以在常用的半导体GaAs上外延生长,因此可能具有更直接的技术重要性。 拟议研究的教育部分将涉及至少一名研究生的论文工作和本科生在实验室的积极参与。 这些学生获得的培训将对未来在工业,政府或学术界的职业生涯有价值。

项目成果

期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)

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Peter Schiffer其他文献

Magnetic frustration squeezed out
磁阻挫被挤出
  • DOI:
    10.1038/420035a
  • 发表时间:
    2002-11-07
  • 期刊:
  • 影响因子:
    48.500
  • 作者:
    Peter Schiffer
  • 通讯作者:
    Peter Schiffer
Monopoles on the move
移动中的单极子
  • DOI:
    10.1038/nphys1244
  • 发表时间:
    2009-04-01
  • 期刊:
  • 影响因子:
    18.400
  • 作者:
    Roderich Moessner;Peter Schiffer
  • 通讯作者:
    Peter Schiffer
Artificial Magnetic Tripod Ice.
人造磁三脚冰。
  • DOI:
    10.1103/physrevlett.131.126701
  • 发表时间:
    2023
  • 期刊:
  • 影响因子:
    8.6
  • 作者:
    Xiaoyu Zhang;I. Chioar;Grant Fitez;Anthony Hurben;M. Saccone;N. S. Bingham;J. Ramberger;C. Leighton;C. Nisoli;Peter Schiffer
  • 通讯作者:
    Peter Schiffer
Capping-induced suppression of annealing effects on Ga1−xMnxAs epilayers
盖帽诱导的 Ga1−xMnxAs 外延层退火效应抑制
  • DOI:
    10.1063/1.1629376
  • 发表时间:
    2003
  • 期刊:
  • 影响因子:
    4
  • 作者:
    Matthew B. Stone;K. Ku;S. Potashnik;B. Sheu;N. Samarth;Peter Schiffer
  • 通讯作者:
    Peter Schiffer
Magnetic frustration squeezed out
磁阻挫被挤出
  • DOI:
    10.1038/420035a
  • 发表时间:
    2002-11-07
  • 期刊:
  • 影响因子:
    48.500
  • 作者:
    Peter Schiffer
  • 通讯作者:
    Peter Schiffer

Peter Schiffer的其他文献

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{{ truncateString('Peter Schiffer', 18)}}的其他基金

New Physics in Artificial Spin Ice via Materials Innovation
通过材料创新实现人造旋转冰的新物理
  • 批准号:
    2419407
  • 财政年份:
    2024
  • 资助金额:
    $ 29.27万
  • 项目类别:
    Continuing Grant
New Physics in Artificial Spin Ice via Materials Innovation
通过材料创新实现人造旋转冰的新物理学
  • 批准号:
    2310275
  • 财政年份:
    2023
  • 资助金额:
    $ 29.27万
  • 项目类别:
    Continuing Grant
Rare Earth Geometrically Frustrated Magnets
稀土几何受挫磁铁
  • 批准号:
    1341793
  • 财政年份:
    2013
  • 资助金额:
    $ 29.27万
  • 项目类别:
    Continuing Grant
Rare Earth Geometrically Frustrated Magnets
稀土几何受挫磁铁
  • 批准号:
    1104122
  • 财政年份:
    2011
  • 资助金额:
    $ 29.27万
  • 项目类别:
    Continuing Grant
Experimental Studies of Geometrically Frustrated Magnets
几何受挫磁体的实验研究
  • 批准号:
    0701582
  • 财政年份:
    2007
  • 资助金额:
    $ 29.27万
  • 项目类别:
    Continuing Grant
Low Temperature Studies of Novel Magnetic Materials
新型磁性材料的低温研究
  • 批准号:
    0401486
  • 财政年份:
    2004
  • 资助金额:
    $ 29.27万
  • 项目类别:
    Standard Grant
NSF-Europe: Collaborative Study of Geometrically Frustrated Magnetic Material: New Materials and New Physics
NSF-欧洲:几何受挫磁性材料的合作研究:新材料和新物理学
  • 批准号:
    0353610
  • 财政年份:
    2004
  • 资助金额:
    $ 29.27万
  • 项目类别:
    Continuing Grant
CAREER: Investigations of Novel Low Temperature Behavior in Materials
职业:材料新型低温行为的研究
  • 批准号:
    0196160
  • 财政年份:
    2000
  • 资助金额:
    $ 29.27万
  • 项目类别:
    Continuing Grant
CAREER: Investigations of Novel Low Temperature Behavior in Materials
职业:材料新型低温行为的研究
  • 批准号:
    9701548
  • 财政年份:
    1997
  • 资助金额:
    $ 29.27万
  • 项目类别:
    Continuing Grant
Acquisition of a SQUID Magnetometer
获取 SQUID 磁力计
  • 批准号:
    9703732
  • 财政年份:
    1997
  • 资助金额:
    $ 29.27万
  • 项目类别:
    Standard Grant

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