Correlation between local vibrations and metal mass in AlB2-type transition-metal diborides
文献类型：期刊论文
| 作者 | Chu WS(储旺盛) ; Zhang S(张爽); Yu MJ(于梅娟); Zheng LR(郑黎荣); Hu TD(胡天斗); Zhao HF(赵海峰); Wu ZY(吴自玉); Chu, WS; Zhang, S; Yu, MJ
|
| 刊名 | JOURNAL OF SYNCHROTRON RADIATION
 |
| 出版日期 | 2009 |
| 卷号 | 16期号:1页码:#REF! |
| 关键词 | EXAFS diboride superconductor |
| 通讯作者 | Wu, ZY (reprint author), Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Facil, Beijing 100049, Peoples R China. |
| 英文摘要 | Lattice vibrations have been investigated in TiB2, ZrB2 and HfB2 by temperature-dependent extended X-ray absorption fine structure (EXAFS) experiments. Data clearly show that the EXAFS oscillations are characterized by an anomalous behavior of the Debye-Waller factor of the transition-metal boron pair, which is suggested to be associated with a superposition of an optical mode corresponding to phonon vibrations induced by the B sublattice and an acoustic mode corresponding to the transition-metal (TM) sublattice. Data can be interpreted as a decoupling of the metal and boron vibrations observed in these transition-metal diborides (TMB2), a mechanism that may be responsible for the significant reduction of the superconducting transition temperature observed in these systems with respect to the parent MgB2 compound. The vibrational behavior of TM-TM bonds has also been investigated to study the occurrence of anisotropy and anomalies in the lattice vibrational behavior of TM-TM bonds. |
| 学科主题 | Instruments & Instrumentation; Optics; Physics |
| 类目[WOS] | Instruments & Instrumentation ; Optics ; Physics, Applied |
| 收录类别 | SCI |
| WOS记录号 | WOS:000262862900005 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/225621]  |
| 专题 | 高能物理研究所_多学科研究中心 |
| 推荐引用方式 GB/T 7714 | Chu WS,Zhang S,Yu MJ,et al. Correlation between local vibrations and metal mass in AlB2-type transition-metal diborides[J]. JOURNAL OF SYNCHROTRON RADIATION,2009,16(1):#REF!. |
| APA | 储旺盛.,张爽.,于梅娟.,郑黎荣.,胡天斗.,...&Wu, ZY.(2009).Correlation between local vibrations and metal mass in AlB2-type transition-metal diborides.JOURNAL OF SYNCHROTRON RADIATION,16(1),#REF!. |
| MLA | 储旺盛,et al."Correlation between local vibrations and metal mass in AlB2-type transition-metal diborides".JOURNAL OF SYNCHROTRON RADIATION 16.1(2009):#REF!. |
入库方式： OAI收割
来源：高能物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。