TY - JOUR
T1 - Crystal structure analysis of Na4Si4-xGex by single crystal X-ray diffraction
AU - Morito, Haruhiko
AU - Momma, Kenji
AU - Yamane, Hisanori
N1 - Funding Information:
This work was supported in part by the Grant-in-Aid for Young Scientists (B) (25820327) from the Ministry of Education, Culture, Sports, Science and Technology. The authors gratefully acknowledge Dr. M. Imai of the National Institute for Materials Science (NIMS) for providing information on the Na–Si binary system.
Publisher Copyright:
© 2014 Elsevier B.V. All rights reserved.
PY - 2015/2/25
Y1 - 2015/2/25
N2 - The black platelet or columnar single crystals of Na4Si4-xGex (x = 0-4) were obtained by heating a mixture of Si and Ge in a Na melt at 1173 K, followed by slow cooling to room temperature. X-ray diffraction analysis of the single crystals clarified the space groups of Na4Si4-xGex with x = 0-2.4 and 2.8-4.0 as C2/c and P21/c, respectively. The lattice parameters and cell volume discontinuously changed at around x = 2.6, while the volume of the [Si4-xGex] tetrahedrons monotonically increased with increase in x. The Si atoms in the Si1 site of Na4Si4 were preferentially replaced by Ge atoms.
AB - The black platelet or columnar single crystals of Na4Si4-xGex (x = 0-4) were obtained by heating a mixture of Si and Ge in a Na melt at 1173 K, followed by slow cooling to room temperature. X-ray diffraction analysis of the single crystals clarified the space groups of Na4Si4-xGex with x = 0-2.4 and 2.8-4.0 as C2/c and P21/c, respectively. The lattice parameters and cell volume discontinuously changed at around x = 2.6, while the volume of the [Si4-xGex] tetrahedrons monotonically increased with increase in x. The Si atoms in the Si1 site of Na4Si4 were preferentially replaced by Ge atoms.
KW - Crystal structure analysis
KW - Single crystal
KW - Sodium-silicon-germanium
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U2 - 10.1016/j.jallcom.2014.10.165
DO - 10.1016/j.jallcom.2014.10.165
M3 - Article
AN - SCOPUS:84918814284
VL - 623
SP - 473
EP - 479
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
SN - 0925-8388
ER -