Variable energy positron annihilation spectroscopy of perovskite oxides

被引：3
|
作者：
Keeble, David J. [1 ]
机构：
[1] Carnegie Laboratory of Physics, School of Engineering, Physics, and Mathematics, University of Dundee, Dundee DD1 4HN, United Kingdom
来源：
Defect and Diffusion Forum | 2012年 / 331卷
关键词：
Defects - Copper compounds - Oxide films - Positrons - Barium titanate - Film preparation - Barium zirconate - Lead compounds - Perovskite solar cells - Electrons - Lanthanum compounds - Perovskite - Positron annihilation spectroscopy;
D O I：
10.4028/www.scientific.net/DDF.331.201
中图分类号：
学科分类号：
摘要：
The application of variable energy positron annihilation spectroscopy (VE-PAS) methods to the study of perovskite oxide, ABO3, material thin films and near-surface regions is reviewed. The primary focus is on ferroic perovskite titanate oxide materials SrTiO3 and Pb(Zr xTi1-x)O3, but studies of BaTiO3, LaxSr1-xCoO3, La0.67Sr 0.33MnO3 and YBa2CuO7-δ are also included. Characterization of single layer and multilayer structures is discussed. The methods, in particular positron annihilation lifetime spectroscopy, allow the identification of cation vacancy defects at both the A- and B-sites with parts per million sensitivity. Varying oxygen deficiency is often observed to result in marked changes in PAS spectra; these effects are reviewed and discussed. © (2012) Trans Tech Publications, Switzerland.
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页码：201 / 233
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