The structural phase transitions in strontium zirconate revisited

被引:225
作者
Howard, CJ
Knight, KS
Kennedy, BJ
Kisi, EH
机构
[1] Australian Nucl Sci & Technol Org, Menai, NSW 2234, Australia
[2] Rutherford Appleton Lab, ISIS Facil, Didcot OX11 0QX, Oxon, England
[3] Univ Sydney, Sch Chem, Sydney, NSW 2006, Australia
[4] Univ Newcastle, Dept Mech Engn, Newcastle, NSW 2308, Australia
关键词
D O I
10.1088/0953-8984/12/45/101
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
The structures of SrZrO3 have been studied in fine temperature steps, from room temperature to 1230 degreesC, by very high resolution neutron powder diffraction. It has been concluded that SrZrO3, orthorhombic in space group Pnma at room temperature, changes by a continuous transition to a pseudo-tetragonal structure in Imma at about 750 degreesC, then by a discontinuous transformation to tetragonal I4/mcm at about 840 degreesC, and finally, continuously, to cubic at 1070 degreesC. The sequence of structures is rationalised by reference to a recent group theoretical analysis.
引用
收藏
页码:L677 / L683
页数:7
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