...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Magnetic properties of the 1/1 approximant Ag_(42)In_(42)Gd_(16) to the icosahedral quasicrystal Ag-In-Gd
【24h】

Magnetic properties of the 1/1 approximant Ag_(42)In_(42)Gd_(16) to the icosahedral quasicrystal Ag-In-Gd

机译：接近二十面体准晶体Ag-In-Gd的1/1近似Ag_（42）In_（42）Gd_（16）的磁性

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 structural, magnetic, and ~(155)Gd Mossbauer spectral properties of the 1/1 approximant Ag_(42)In_(42)Gd_(16) to an icosahedral quasicrystal Ag-In-Gd are reported. Based on dc magnetic susceptibility measurements, it is shown that the studied compound develops no long-range magnetic order in the temperature range 1.8-300 K. The dc zero-field-cooled and field-cooled susceptibility data indicate that the 1/1 approximant Ag_(42)In_(42)Gd_(16) is a spin glasss with freezing temperature T_f=3.6(1)K. This is further confirmed by the analysis of the frequency dependence of T_f using the Vogel-Fulcher law and the dynamic scaling behavior near T_f. It is argued that the spin freezing process is a true equilibrium phase transition rather than a nonequilibrium phenomenon. The large frustration parameter of the studied compound indicates that it belongs to a category of strongly geometrically frustrated magnets. The ~(155)Gd Mossbauer spectra of the 1/1 approximant Ag_(42)In_(42)Gd_(16) confirm that the Gd spins are frozen at 1.5 K and are fluctuating at 4.6 K. The Debye temperature of the 1/1 approximant Ag_(42)In_(42)Gd_(16) is 200(1)K.
机译：报道了与二十面体准晶体Ag-In-Gd的1/1近似的Ag_（42）In_（42）Gd_（16）的结构，磁性和〜（155）Gd Mossbauer光谱性质。根据直流磁化率的测量结果表明，所研究的化合物在1.8-300 K的温度范围内没有长程磁序。直流零场冷和场冷磁化率数据表明，1/1近似值Ag_（42）In_（42）Gd_（16）是冻结温度T_f = 3.6（1）K的旋转玻璃。通过使用Vogel-Fulcher定律分析T_f的频率依赖性以及T_f附近的动态缩放行为，可以进一步证实这一点。认为自旋冻结过程是真正的平衡相变，而不是非平衡现象。研究化合物的大挫折参数表明它属于强几何挫折磁体类别。 1/1近似值Ag_（42）In_（42）Gd_（16）的〜（155）Gd Mossbauer光谱证实，Gd自旋冻结在1.5 K，并在4.6 K波动。1/的德拜温度。 1个近似值Ag_（42）In_（42）Gd_（16）为200（1）K。

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