...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>The journal of physical chemistry, C. Nanomaterials and interfaces >Magnetic and Electron Spin Relaxation Properties of (Gd_xY_(1-x))2O3 (0 ≤ x ≤ 1) Nanoparticles Synthesized by the Combustion Method. Increased Electron Spin Relaxation Times with Increasing Yttrium Content
【24h】

Magnetic and Electron Spin Relaxation Properties of (Gd_xY_(1-x))2O3 (0 ≤ x ≤ 1) Nanoparticles Synthesized by the Combustion Method. Increased Electron Spin Relaxation Times with Increasing Yttrium Content

机译：燃烧法合成（Gd_xY_（1-x））2O3（0≤x≤1）纳米粒子的磁和电子自旋弛豫特性。随着钇含量的增加，电子自旋弛豫时间增加

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The performance of a magnetic resonance imaging contrast agent (CA) depends on several factors, including the relaxation times of the unpaired electrons in the CA. The electron spin relaxation time may he a key factor for the performance of new CAs, such as nanosized Gd2O3 particles. The aim of this work is, therefore, to study changes in the magnetic susceptibility and the electron spin relaxation time of paramagnetic Gd2O3 nanoparticles diluted with increasing amounts of diamagnetic Y2O3. Nanoparticles of (Gd_xY_(1-x)2o3 (0 ≤ x ≤ 1) were prepared by the combustion method and thoroughly characterized (by X-ray diffraction, transmission electron microscopy, thermogravimetry coupled with mass spectroscopy, photoelectron spectroscopy, Fourier transform infrared spectroscopy, and magnetic susceptibility measurements). Changes in the electron spin relaxation time were estimated by observations of the signal line width in electron paramagnetic resonance spectroscopy, and it was found that the line width was dependent on the concentration of yttrium, indicating that diamagnetic Y2O3 may increase the electron spin relaxation time of Gd2O3 nanoparticles.
机译：磁共振成像造影剂（CA）的性能取决于几个因素，包括CA中未配对电子的弛豫时间。电子自旋弛豫时间可能是影响新型CA（例如纳米级Gd2O3颗粒）性能的关键因素。因此，这项工作的目的是研究顺磁性的Gd2O3纳米粒子随抗磁性Y2O3的增加而稀释后的磁化率和电子自旋弛豫时间的变化。通过燃烧方法制备了（Gd_xY_（1-x）2o3（0≤x≤1）的纳米粒子，并对其进行了彻底的表征（通过X射线衍射，透射电子显微镜，热重分析与质谱，光电子能谱，傅里叶变换红外光谱通过观察电子顺磁共振波谱中的信号线宽度来估算电子自旋弛豫时间的变化，发现该线宽取决于钇的浓度，表明抗磁性的Y2O3可能与增加Gd2O3纳米粒子的电子自旋弛豫时间。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号