Lattice vibrational property in the transition-metal diboride ZrB2
Chu WS(储旺盛); Wu ZY(吴自玉); Chu, WS; Wu, ZY; Bianconi, A; Saini, NL; Marcelli, A; Liu, WH
刊名SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
2008
卷号70期号:2页码:466-470
关键词diboride EXAFS Einstein mode lattice vibration superconductivity
学科分类Spectroscopy
DOI10.1016/j.saa.2007.11.034
通讯作者[Chu, W. S. ; Wu, Z. Y.] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China ; [Chu, W. S. ; Liu, W. H.] Univ Sci & Technol China, Hefei 230026, Peoples R China ; [Bianconi, A. ; Saini, N. L.] Univ Roma La Sapienza, I-00185 Rome, Italy ; [Bianconi, A. ; Saini, N. L.] Unita INFM, I-00185 Rome, Italy ; [Marcelli, A.] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy
文章类型Article
英文摘要Lattice vibrational property has been determined in ZrB2 system using the temperature-dependent extended X-ray-absorption fine-structure (EXAFS) technique from room temperature to 28 K. The smooth behavior of Debye-Waller factor curve with temperature is slightly abnormal for the first pair Zr-B. In order to reproduce this curve, an improved Einstein mode with two Einstein frequencies has been used. The quantitative analysis of temperature-dependent Debye-Waller factor of Zr-B pair shows one Einstein frequency is very high and the other is small. These frequencies correspond to the vibration of boron layer atoms and transition-metal layer atoms, respectively. Based on the Einstein mode with one frequency, the vibrational frequency for Zr-Zr pair has been also obtained. Zirconium diboride has two types of Zr-Zr interaction. One is in-plane and the other is out-of-plane along the high symmetry axis. Our analysis shows there is a little difference between in-plane Zr-Zr vibration and out-of-plane one. And the smaller Einstein vibrational frequency for the Zr-B shell is just between the two ones of the Zr-Zr shells. Our results show that the lattice vibrational behavior in ZrB2 presents obvious particularity and anisotropy. (C) 2008 Elsevier B.V. All rights reserved.
类目[WOS]Spectroscopy
研究领域[WOS]Spectroscopy
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语种英语
WOS记录号WOS:000257519600038
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被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/237599
专题中国科学院高能物理研究所_多学科研究中心_期刊论文
作者单位中国科学院高能物理研究所
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Chu WS,Wu ZY,Chu, WS,et al. Lattice vibrational property in the transition-metal diboride ZrB2[J]. SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY,2008,70(2):466-470.
APA 储旺盛.,吴自玉.,Chu, WS.,Wu, ZY.,Bianconi, A.,...&Liu, WH.(2008).Lattice vibrational property in the transition-metal diboride ZrB2.SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY,70(2),466-470.
MLA 储旺盛,et al."Lattice vibrational property in the transition-metal diboride ZrB2".SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 70.2(2008):466-470.
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