Crystallochemistry and structural study of some Nasicon-like phosphates

被引：13

作者：

El Jazouli, A

El Bouari, A

Fakrane, H

Housni, A

Lamire, M

Mansouri, I

Olazcuaga, R

Le Flem, G

机构：

[1] Fac Sci Ben MSik, Lab Chim Mat Solides, Casablanca, Morocco

[2] Fac Sci Ain Chock, Chim Solide Lab, Casablanca, Morocco

[3] Inst Chim Mat Condensee Bordeaux, F-33608 Pessac, France

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 1997年 / 262卷

关键词：

cationic distribution; crystallochemistry; Nasicon; phosphate; structure;

D O I：

10.1016/S0925-8388(97)00466-0

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The phosphates Na1-3xEuxTi2(PO4)(3), M0.5Ti2(PO4)(3) and M0.5FeNb(PO4)(3) (M is a divalent cation) belong to the Nasicon structural family. The structures have been determined by the Rietveld refinement of the powder X-ray diffraction patterns. The space group is R (3) over bar for Na0.25Eu0.25Ti2(PO4)(3) and Ca0.5Ti2(PO4)(3) and R (3) over bar c for M0.5FeNb(PO4)(3) (M = Cd, Ca, Sr, Pb, Ba). The change of space group, which is related to the cation distribution, is discussed with regard to the composition of the phosphates. (C) 1997 Elsevier Science S.A.

引用

页码：49 / 53

页数：5

共 17 条

[1] HIGH-TEMPERATURE NEUTRON DIFFRACTIONS TUDY OF CAZR4(PO4)6 [J].