Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/2903
PIRA download icon_1.1View/Download Full Text
DC FieldValueLanguage
dc.contributorDepartment of Applied Physics-
dc.creatorBaba-Kishi, KZ-
dc.date.accessioned2014-12-11T08:24:55Z-
dc.date.available2014-12-11T08:24:55Z-
dc.identifier.issn0021-8898-
dc.identifier.urihttp://hdl.handle.net/10397/2903-
dc.language.isoenen_US
dc.publisherInternational Union of Crystallographyen_US
dc.rights© 2011 International Union of Crystallographyen_US
dc.subjectCation displacementsen_US
dc.subjectPb-based relaxor oxidesen_US
dc.subjectPerovskitesen_US
dc.titleDirect observation of B-site cation displacements in Pb-based complex perovskite relaxor oxidesen_US
dc.typeJournal/Magazine Articleen_US
dc.identifier.spage111-
dc.identifier.epage121-
dc.identifier.volume44-
dc.identifier.issue1-
dc.identifier.doi10.1107/S0021889810042214-
dcterms.abstractElectron diffraction patterns recorded using a scanning transmission electron microscope (STEM) from PbMg[sub ⅓]Nb[sub ⅔]O₃ (PMN) crystallites and PbZn[sub ⅓]Nb[sub ⅔]O₃ (PZN) crystals show weak and systematic continuous diffuse streaking along the <110> directions. Detailed high-angle annular dark-field (HAADF) images recorded via an aberration-corrected STEM show that the B-site cations in PMN and PZN undergo correlated and long-range displacements towards the Pb²⁺ ions on the (110) planes. The planar B-site displacement measured from the centres of the octahedra is about 0.3-0.5 Å in PMN and about 0.20-0.4 Å in PZN. In the HAADF images of the PMN crystallites and PZN crystals studied, there is insufficient evidence for systematic long-range planar displacements of the Pb²⁺ ions. The observed Pb²⁺ ion displacements in PMN and PZN appear randomly distributed, mostly displaced along <110> towards the B-site columns. There is also evidence of possible stress-related distortion in certain unit cells of PMN. In the relaxors studied, two distinct types of displacements were observed: one is the long-range planar B-site spatial displacement on the (110) planes, correlated with the Pb²⁺ ions, possibly resulting in the observed diffuse streaking; the other is short-range Pb²⁺ ion displacement on the (110) planes. The observed displacement status indicates a mutual attraction between the Pb ions and the B-site cations in which the B sites undergo the largest spatial displacements towards the Pb ions along <110>.-
dcterms.accessRightsopen accessen_US
dcterms.bibliographicCitationJournal of applied crystallography, Feb. 2011, v. 44, no. 1, p. 111-121-
dcterms.isPartOfJournal of applied crystallography-
dcterms.issued2011-02-
dc.identifier.isiWOS:000286475300014-
dc.identifier.scopus2-s2.0-79251523487-
dc.identifier.rosgroupidr53124-
dc.description.ros2010-2011 > Academic research: refereed > Publication in refereed journal-
dc.description.oaVersion of Recorden_US
dc.identifier.FolderNumberOA_IR/PIRAen_US
dc.description.pubStatusPublisheden_US
Appears in Collections:Journal/Magazine Article
Files in This Item:
File Description SizeFormat 
2371.pdf6.23 MBAdobe PDFView/Open
Open Access Information
Status open access
File Version Version of Record
Access
View full-text via PolyU eLinks SFX Query
Show simple item record

Page views

53
Last Week
0
Last month
Citations as of Jun 26, 2022

Downloads

160
Citations as of Jun 26, 2022

SCOPUSTM   
Citations

4
Last Week
0
Last month
0
Citations as of Jun 23, 2022

WEB OF SCIENCETM
Citations

5
Last Week
0
Last month
0
Citations as of Jun 23, 2022

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.