Thermal expansion behavior study of Co nanowire array with in situ x-ray diffraction and x-ray absorption fine structure techniques

被引：9
|
作者：
Mo, Guang [1 ,2 ]
Cai, Quan [1 ,2 ]
Jiang, Longsheng [1 ,2 ]
Wang, Wei [1 ,2 ]
Zhang, Kunhao [1 ,2 ]
Cheng, Weidong [1 ,2 ]
Xing, Xueqing [1 ,2 ]
Chen, Zhongjun [1 ]
Wu, Zhonghua [1 ]
机构：
[1] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
[2] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
来源：
APPLIED PHYSICS LETTERS | 2008年 / 93卷 / 17期
基金：
中国国家自然科学基金;
关键词：
D O I：
10.1063/1.3012367
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
In situ x-ray diffraction and x-ray absorption fine structure techniques were used to study the structural change of ordered Co nanowire array with temperature. The results show that the Co nanowires are polycrystalline with hexagonal close packed structure without phase change up until 700 degrees C. A nonlinear thermal expansion behavior has been found and can be well described by a quadratic equation with the first-order thermal expansion coefficient of 4.3 x 10(-6)/degrees C and the second-order thermal expansion coefficient of 5.9 x 10(-9)/degrees C The mechanism of this nonlinear thermal expansion behavior is discussed. (C) 2008 American Institute of Physics. [DOI: 10.1063/1.3012367]
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页数：3
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