Neutron diffraction study of the low-temperature transitions in the SrMo0.9Co0.1O3 oxide

被引：2
|
作者：
Martinez-Coronado, R. [1 ]
Alonso, J. A. [1 ]
Fernandez-Diaz, M. T. [2 ]
机构：
[1] CSIC, Inst Ciencia Mat Madrid, E-28049 Madrid, Spain
[2] Inst Max Von Laue Paul Langevin, F-38042 Grenoble, France
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2015年 / 644卷
关键词：
SrMoO3; Phase transition; Octahedral tilting; SrMo1-xCoxO3; STRUCTURAL PHASE-TRANSITIONS; ELECTRICAL-PROPERTIES; STRONTIUM MOLYBDATE; POWDER DIFFRACTION; DEGREES K; PEROVSKITE;
D O I：
10.1016/j.jallcom.2015.05.045
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：
SrMo0.9Co0.1O3 perovskite has recently been described as a performing anode material in solid-oxide fuel cells (SOFC). In this work, we describe the structural phase transitions that this oxide undergoes below room-temperature, studied by "in-situ" neutron powder diffraction (NPD). data and differential scanning calorimetry (DSC) measurements. The oxide is defined in a cubic unit cell with space group Pm (3) over barm at room temperature. Upon cooling the sample, two structural phase transitions appear, the first one from the cubic structure to a tetragonal I4/mcm structure close to 240 K, and the second one to an orthorhombic Imma phase below 150 K. By DSC measurements the first phase transition was identified to happen at 243 K. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：770 / 773
页数：4
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