Concentration dependences of the unit-cell parameters of nonstoichiometric fluorite-type Na0.5 − xR0.5 + xF2 + 2x phases (R = rare-earth elements)

被引：0
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作者：
P. P. Fedorov
V. B. Aleksandrov
O. S. Bondareva
I. I. Buchinskaya
M. D. Val'kovskii
B. P. Sobolev
机构：
[1] Russian Academy of Sciences,Shubnikov Institute of Crystallography
[2] Russian Academy of Sciences,Kurnakov Institute of General and Inorganic Chemistry
来源：
Crystallography Reports | 2001年 / 46卷
关键词：
Ionic Radius; Concentration Dependence; Crystal Ionic Radius;
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摘要：
Unit-cell parameter a of the cubic phases with a varying composition Na0.5 − xR0.5 + xF2 + 2x (R = Gd-Lu and Y) and with a fluorite-type structure, is described within an accuracy of ±0.003 Å, by the formula a = 4.454 + 0.874r3 + x(6.7238r3 − 7.259) where r3 is the Shannon “crystal ionic radius” R3+ at c.n. = 8.
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页码：239 / 245
页数：6
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