The bond ionicity of MB2 (M = Mg, Ti, V, Cr, Mn, Zr, Hf, Ta, Al and Y) | |
Chen, XL ; Tu, QY ; He, M ; Dai, L ; Wu, L | |
刊名 | JOURNAL OF PHYSICS-CONDENSED MATTER
![]() |
2001 | |
卷号 | 13期号:29页码:L723 |
关键词 | SUSCEPTIBILITIES CRYSTALS |
ISSN号 | 0953-8984 |
通讯作者 | Chen, XL (reprint author), Chinese Acad Sci, Inst Phys, POB 603, Beijing 100080, Peoples R China. |
中文摘要 | The bond ionicity in biborides MB2 (M = Mg, Ti, V, Cr, Mn, Zr, Hf, Ta, Al and Y) has been studied by using the complex chemical bond theory based on a generalization of the Phillips-Van Vechten-Levine scheme. The ionicity of M-B bonds decreases in the following order: Mg, Al, Mn, Y, Cr, Zr, Hf, Nb, Ta, V and Ti. The Mg-B bond in MgB2 has the largest value of ionicity of 96.8% among these examined diborides. Our calculations support the recent results of band structure calculations that Mg atoms are fully ionized so that they can donate valence electrons to the system. The observed superconductivity loss in the solid solution Mg1-xAlxB2 with x > 0.1 can be understood in terms of the ionicity and the number of valence electrons. |
收录类别 | SCI |
语种 | 英语 |
公开日期 | 2013-09-23 |
内容类型 | 期刊论文 |
源URL | [http://ir.iphy.ac.cn/handle/311004/44908] ![]() |
专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
推荐引用方式 GB/T 7714 | Chen, XL,Tu, QY,He, M,et al. The bond ionicity of MB2 (M = Mg, Ti, V, Cr, Mn, Zr, Hf, Ta, Al and Y)[J]. JOURNAL OF PHYSICS-CONDENSED MATTER,2001,13(29):L723. |
APA | Chen, XL,Tu, QY,He, M,Dai, L,&Wu, L.(2001).The bond ionicity of MB2 (M = Mg, Ti, V, Cr, Mn, Zr, Hf, Ta, Al and Y).JOURNAL OF PHYSICS-CONDENSED MATTER,13(29),L723. |
MLA | Chen, XL,et al."The bond ionicity of MB2 (M = Mg, Ti, V, Cr, Mn, Zr, Hf, Ta, Al and Y)".JOURNAL OF PHYSICS-CONDENSED MATTER 13.29(2001):L723. |
个性服务 |
查看访问统计 |
相关权益政策 |
暂无数据 |
收藏/分享 |
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。
修改评论