Report/Journal Article

PUBDB-2014-04230

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Pressure-induced structural transformations in advanced ferroelectrics with relaxor behaviour

Mihailova, B. (Corresponding Author)Extern* ; Waeselmann, N.Extern* ; Maier, B.Extern* ; Welsch, A.Extern* ; Angel, R.Extern* ; Bismayer, U.Extern*

2013
Taylor and Francis London [u.a.]

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Please use a persistent id in citations: doi:10.1080/08957959.2013.806499  doi:10.3204/PUBDB-2014-04230

Report No.: bmbf-projekt 05k13gu1

Abstract: A series of model perovskite-type relaxor ferroelectrics (pure and A-/B-site doped PbSc1/2Ta1/2O3 andPbSc1/2Nb1/2O3 as well as of 0.9PbZn1/3Nb2/3O3 − 0.1PbTiO3) were studied by high pressure diffractionand inelastic light scattering in order to elucidate the mesoscopic-scale ferroic atomic arrangementsresponsible for the superb macroscopic properties of these materials. The combined analysis of the pressureenhancedphonon anomalies observed by Raman spectroscopy and the pressure-induced long-range orderdetected by synchrotron X-ray and neutron diffraction revealed that at ambient conditions antiferrodistortiveorder coexists with the ferroelectric order on the mesoscopic scale. This suggests that the locallypolarized spatial nanoregions known as polar nanoregions are ferrielectric in nature and their abundanceand mean size depend on both the antiferrodistortive and ferroelectric coupling, which in turn can be tunedby appropriate chemical variations.

Note: © Taylor & Francis

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Contributing Institute(s):

1. DOOR-User (DOOR)

Research Program(s):

1. DORIS Beamline F2.1 (POF2-54G13) (POF2-54G13)

Experiment(s):

1. DORIS Beamline F2.1 (DORIS III)

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Database coverage:
; ; Current Contents - Physical, Chemical and Earth Sciences ; IF < 5 ; JCR ; Nationallizenz ; SCOPUS ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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