Depth dependant element analysis of PbMg1/3 Nb2/3 O3 using muonic x-rays

Journal of Physics. Condensed Matter : an Institute of Physics Journal
K L BrownC Stock

Abstract

The relaxor PbMg1/3Nb2/3O3 (PMN) has received attention due to its potential applications as a piezoelectric when doped with PbTiO3 (PT). Previous results have found that there are two phases existing in the system, one linked to the near-surface regions of the sample, the other in the bulk. However, the exact origin of these two phases is unclear. In this paper, depth dependant analysis results from negative muon implantation experiments are presented. It is shown that the Pb content is constant throughout all depths probed in the sample, but the Mg and Nb content changes in the near-surface region below 100 μm. At an implantation depth of 60 μm, it is found that there is a 25% increase in Mg content, with a simultaneous 5% decrease in Nb content in order to maintain charge neutrality. These results show that the previously observed skin effects in PMN are due to a change in concentration and unit cell.

References

Feb 1, 1995·Physical Review. B, Condensed Matter·P M GehringG Shirane
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Jun 24, 1991·Physical Review Letters·J P HillR J Birgeneau
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Jan 22, 2002·Physical Review Letters·P M GehringG Shirane
Dec 22, 2011·Acta Crystallographica. Section A, Foundations of Crystallography·A BosakM Krisch

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Citations

Apr 7, 2020·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Christopher StockBertrand Roessli

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