CRYSTAL-STRUCTURE OF BA2SCALO5 AND SR2SC0.5AL1.5O5

被引：14
|
作者：
RATH, M
MULLERBUSCHBAUM, H
机构：
[1] Institut für Anorganische Chemie der Christian-Albrechts-Universität, W-2300 Kiel
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 1992年 / 189卷 / 01期
关键词：
D O I：
10.1016/0925-8388(92)90058-H
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：
Single crystals of (I) Ba2ScAlO5 and (II) Sr2Sc0.5Al1.5O5 were prepared by high temperature reactions and investigated by the X-ray technique. (I) belongs to the BaTiO3 type (a = 5.7965 angstrom; c = 14.5398 angstrom; space group, D6h4 (P6(3)/mmc); Z=3) and (II) show a cubic perovskite structure (a = 7.9078 angstrom; space group, T(h)6 (Pa3BAR); Z = 4). The reinvestigation of (I) shows only one underoccupied point position of O(2). The substitution of Ba2+ by Sr2+ changes the 6L-type structure of (I) to the classic cubic perovskite with partially ordered occupation of octahedra holes of (II).
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页码：127 / 130
页数：4
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