SINGLE-CRYSTALS OF A NEW PYROCHLORE-TYPE PHASE, TIYO2.1 WITH DEFECTS

被引：5

作者：

MOHR, S ^{[1
]}

MULLERBUSCHBAUM, H ^{[1
]}

机构：

[1] CHISTIAN ALBRECHTS UNIV,INST ANORGAN CHEM,OLSHAUSENSTR 40-60,D-24098 KIEL,GERMANY

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 1994年 / 210卷 / 1-2期

关键词：

D O I：

10.1016/0925-8388(94)90124-4

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 a subvalent oxide of composition YTiO2.1 have been prepared by CO2 laser heating above 2800-degrees-C. It crystallizes with cubic symmetry, space group O(h)7-Fd3mBAR, a = 10.1811 angstrom, Z = 16. YTiO2.1 belongs to the pyrochlore-type compounds. The two oxygen positions are strongly underoccupied. Calculations of the Coulomb terms of lattice energy show significant evidence of Ti3+ rather than Ti2+ and of Y3+ rather than Y2+.

引用

页码：115 / 118

页数：4

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