Development of a High Magnetic Field Pulsed Nuclear Magnetic Resonance (NMR) System for Materials Research

开发用于材料研究的高磁场脉冲核磁共振 (NMR) 系统

基本信息

  • 批准号:
    9413196
  • 负责人:
  • 金额:
    $ 11.54万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    1994
  • 资助国家:
    美国
  • 起止时间:
    1994-08-01 至 1996-01-31
  • 项目状态:
    已结题

项目摘要

Partial support is provided to the University of California- Los Angeles for the development of a novel, compact pulsed nuclear magnetic resonance (NMR) instrument for research in condensed matter science. The new instrument will operate over a broad range of steady magnetic fields that extends up to the highest available. The main parts of the system consist of: (1) A compact, portable, medium-power pulsed NMR spectrometer with frequency coverage up to 2 GHz, (2) a low- helium consumption 9-T superconducting solenoid for experiments at UCLA, and (3) a wide variety of probes to accommodate different magnets and experimental conditions of temperature, NMR frequency, and sample alignment. Experiments below 9 T will be conducted at UCLA. For the higher fields (up to 45 T), the spectrometer will be transported to the laboratories at other institutions that house the high-field magnets. Since many of these magnets do not have the field stability and homogeneity necessary for NMR measurements, correction coils will be added to the probes to overcome these difficulties. The NMR research topics to be investigated with the system include the static and dynamic properties of spin density waves, vortex pinning and dynamics in superconductors, and nanocrystal compounds. A secondary use by UCLA investigators of the 9 T magnet that involves very little liquid helium consumption will be thermal, magnetic and frequency dependent electrical transport investigations of correlated electron systems. In these applications, the field at the sample will be swept by maintaining the magnet in the persistent mode and physically lowering it to move its fringing field past the sample. Aside from studies at UCLA, collaborations will be established with other investigators to use the NMR spectrometer at various high field laboratories.
向加州大学洛杉矶分校提供了部分支持,用于开发用于凝聚态科学研究的新型紧凑型脉冲核磁共振(核磁共振)仪器。新仪器将在广泛的稳定磁场范围内运行,最高可达可用的最高磁场。该系统的主要部分包括:(1)紧凑、便携、中等功率的脉冲核磁共振光谱仪,频率覆盖范围高达2 GHz;(2)用于加州大学洛杉矶分校实验的低氦消耗9-T超导螺线管;以及(3)各种探头,以适应不同的磁体和实验条件,如温度、核磁共振频率和样品排列。9℃以下的实验将在加州大学洛杉矶分校进行。对于高场(高达45T),光谱仪将被运送到其他机构的实验室,那里有高场磁铁。由于其中许多磁体不具备核磁共振测量所需的磁场稳定性和均匀性,因此将在探头中添加校正线圈以克服这些困难。该系统将研究的核磁共振研究课题包括自旋密度波的静态和动态性质,超导体中的涡旋钉扎和动力学,以及纳米晶体化合物。加州大学洛杉矶分校的研究人员对9T磁体的二次使用是对相关电子系统的热、磁和频率依赖的电子输运研究,该磁体只需要很少的液氦消耗。在这些应用中,通过将磁体保持在持久模式并物理地降低磁体以使其边缘磁场通过样品来扫描样品处的磁场。除了加州大学洛杉矶分校的研究外,还将与其他研究人员建立合作,在各种高场实验室使用核磁共振光谱仪。

项目成果

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W. Gilbert Clark其他文献

W. Gilbert Clark的其他文献

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{{ truncateString('W. Gilbert Clark', 18)}}的其他基金

NMR Investigation of Density Waves, Organic conductors, Superconductors, and Conducting Polymers
密度波、有机导体、超导体和导电聚合物的核磁共振研究
  • 批准号:
    0334869
  • 财政年份:
    2003
  • 资助金额:
    $ 11.54万
  • 项目类别:
    Continuing Grant
US-India Cooperative Research: Spin and Charge Dynamics in Conducting Polymers by Nuclear Magnetic Resonance Studies
美印合作研究:通过核磁共振研究导电聚合物的自旋和电荷动力学
  • 批准号:
    0225578
  • 财政年份:
    2002
  • 资助金额:
    $ 11.54万
  • 项目类别:
    Standard Grant
NMR Studies of Density Wave Phases, Superconductivity, and Polymer Electronic Conduction
密度波相、超导性和聚合物电子传导的核磁共振研究
  • 批准号:
    0072524
  • 财政年份:
    2000
  • 资助金额:
    $ 11.54万
  • 项目类别:
    Continuing Grant
NMR Investigations of Spin Density Waves in Organic Metals and Vortices in Superconductors
有机金属中自旋密度波和超导体中涡流的核磁共振研究
  • 批准号:
    9705369
  • 财政年份:
    1997
  • 资助金额:
    $ 11.54万
  • 项目类别:
    Continuing Grant
NMR Investigations of the Static and Dynamic Properties of Spin Density Waves
自旋密度波的静态和动态特性的核磁共振研究
  • 批准号:
    9319304
  • 财政年份:
    1994
  • 资助金额:
    $ 11.54万
  • 项目类别:
    Continuing Grant
Excitation Dynamics of Random Magnetic Systems
随机磁系统的激励动力学
  • 批准号:
    9496027
  • 财政年份:
    1993
  • 资助金额:
    $ 11.54万
  • 项目类别:
    Continuing Grant
Some Theoretical Studies of the Properties of Condensed Matter
凝聚态物质性质的一些理论研究
  • 批准号:
    9496138
  • 财政年份:
    1993
  • 资助金额:
    $ 11.54万
  • 项目类别:
    Continuing Grant
Some Theoretical Studies of the Properties of Condensed Matter
凝聚态物质性质的一些理论研究
  • 批准号:
    9112830
  • 财政年份:
    1991
  • 资助金额:
    $ 11.54万
  • 项目类别:
    Continuing Grant
Excitation Dynamics of Random Magnetic Systems
随机磁系统的激励动力学
  • 批准号:
    9023107
  • 财政年份:
    1991
  • 资助金额:
    $ 11.54万
  • 项目类别:
    Continuing Grant
Static and Dynamic Properties of Electrons and Collective Modes in Low-Dimensional Conductors (Materials Research)
低维导体中电子和集体模式的静态和动态特性(材料研究)
  • 批准号:
    8409390
  • 财政年份:
    1984
  • 资助金额:
    $ 11.54万
  • 项目类别:
    Continuing Grant

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磁通门磁力计PU信号采样技术的发展与空间三维磁场的渐进理解
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