| 标题 |
X-ray absorption studies of Al-Mn system
|
| 网址 |
求助人暂未提供
|
| DOI |
暂未提供，该求助的时间将会延长，查看原因？
|
| 其它 |
PHYSICA SCRIPTA 卷: T115 页: 570-572 出版年: 2005 文献类型:Article 摘要 X-ray K-absorption studies have been carried out on Al-Mn system comprising Al90Mn10, Al88Mn12, Al86Mn14, Al84Mn16, Al82Mn18 and Al81Mn19 samples. These samples have been characterized by X-ray diffraction (XRD) studies which support the formation of icosahedral phase. The X-ray K-absorption discontinuities in case of the Al-Mn system have been found to be shifted towards the high energy side with respect to the K-absorption edge of pure metal Mn, which indicates the behaviour of manganese atom as the cation. The X-ray absorption chemical shifts suggest a covalent bonding. The studies also indicate that with the increase in Mn concentration chemical shifts also increase. We have attempted to correlate the values of the electron to atom ratio (e/a) with the chemical shifts (Delta E). The nature of relationship between e/a and Delta E is quite similar to that between Delta E and Mn concentration. Further, we have estimated the density of states at the Fermi level D(E-F) for these samples and plotted them against chemical shift values. Extrapolation from this graph between D(EF) and Delta E indicates a D(EF) value for Al metal which is quite near to the actual value for Al metal. These studies establish the existence of a pseudo gap in the case of presently investigated Al-Mn samples. The present studies also support our assumption of assigning the chemical shift values to the Fermi level in the case of Al-Mn system under present investigation. |
| 求助人 |
方可
在
2020-12-14 10:31:21 发布，悬赏 10 积分
|
| 下载 | 该求助完结已超 24 小时，文件已从服务器自动删除，无法下载。 |
PDF的下载单位、IP信息已删除
浮游
不想干活
XCL
馆长
vizi
鸣笛
胖胖胖胖
leaolf
Wells
核桃
不安青牛
相约在天边
CR7
执着谷兰
CAOHOU
恋雅颖月
无限的以晴
奋斗砖家
蓝天
遇上就这样吧
皖公网安备34019202002308
