期刊
JOURNAL OF SOLID STATE CHEMISTRY
卷 182, 期 7, 页码 1754-1760出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jssc.2009.04.006
关键词
Clathrate type I structure; Ba8CuxGe46-x-y square(y); Phase equilibria; XPD; XSCD
资金
- FFG project THECLA
- Austrian FWF projects [P19165, P16778-No2]
- Austrian Science Fund (FWF) [P19165] Funding Source: Austrian Science Fund (FWF)
Phase relations at 700 degrees C, 800 degrees C and solidus temperatures have been derived for the clathrate system Ba8CuxGe46-x-y square(y) via X-ray single crystal and powder diffractometry combined with electron probe micro analysis and differential thermal analysis. The ternary clathrate phase derives from binary Ba8Ge43 square(3) and extends up to x = 6. Structure investigations define cubic primitive symmetry with the space group type Pm (3) over barn consistent with a clathrate type I Structure throughout the entire homogeneity region 0 < x <= 6 but defect-free Ba8CuxGe46-x exists for x >= 5.5. (C) 2009 Elsevier Inc. All rights reserved.
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