Pyroelectric properties and electrical conductivity in samarium doped BiFeO 3 ceramics

Handle URI:
http://hdl.handle.net/10754/562206
Title:
Pyroelectric properties and electrical conductivity in samarium doped BiFeO 3 ceramics
Authors:
Yao, Yingbang; Liu, Wenchao; Mak, C. L.
Abstract:
Samarium (Sm 3+) doped BiFeO 3 (BFO) ceramics were prepared by a modified solid-state-reaction method which adopted a rapid heating as well as cooling during the sintering process. The pyroelectric coefficient increased from 93 to 137 μC/m 2 K as the Sm 3+ doping level increased from 1 mol% to 8 mol%. Temperature dependence of the pyroelectric coefficient showed an abrupt decrease above 80 °C in all samples, which was associated with the increase of electrical conductivity with temperature. This electrical conduction was attributed to oxygen vacancy existing in the samples. An activation energy of ∼0.7 eV for the conduction process was found to be irrespective of the Sm 3+ doping level. On the other hand, the magnetic Néel temperature (T N) decreased with increasing Sm 3+ doping level. On the basis of our results, the effects of Sm doping level on the pyroelectric and electrical properties of the BFO were revealed. © 2011 Elsevier Ltd. All rights reserved.
KAUST Department:
Advanced Nanofabrication, Imaging and Characterization Core Lab; Core Labs
Publisher:
Elsevier BV
Journal:
Journal of Alloys and Compounds
Issue Date:
Jun-2012
DOI:
10.1016/j.jallcom.2012.02.182
Type:
Article
ISSN:
09258388
Sponsors:
This work was supported by the Hong Kong Polytechnic University under Grant No. GYH08.
Appears in Collections:
Articles; Advanced Nanofabrication, Imaging and Characterization Core Lab

Full metadata record

DC FieldValue Language
dc.contributor.authorYao, Yingbangen
dc.contributor.authorLiu, Wenchaoen
dc.contributor.authorMak, C. L.en
dc.date.accessioned2015-08-03T09:47:15Zen
dc.date.available2015-08-03T09:47:15Zen
dc.date.issued2012-06en
dc.identifier.issn09258388en
dc.identifier.doi10.1016/j.jallcom.2012.02.182en
dc.identifier.urihttp://hdl.handle.net/10754/562206en
dc.description.abstractSamarium (Sm 3+) doped BiFeO 3 (BFO) ceramics were prepared by a modified solid-state-reaction method which adopted a rapid heating as well as cooling during the sintering process. The pyroelectric coefficient increased from 93 to 137 μC/m 2 K as the Sm 3+ doping level increased from 1 mol% to 8 mol%. Temperature dependence of the pyroelectric coefficient showed an abrupt decrease above 80 °C in all samples, which was associated with the increase of electrical conductivity with temperature. This electrical conduction was attributed to oxygen vacancy existing in the samples. An activation energy of ∼0.7 eV for the conduction process was found to be irrespective of the Sm 3+ doping level. On the other hand, the magnetic Néel temperature (T N) decreased with increasing Sm 3+ doping level. On the basis of our results, the effects of Sm doping level on the pyroelectric and electrical properties of the BFO were revealed. © 2011 Elsevier Ltd. All rights reserved.en
dc.description.sponsorshipThis work was supported by the Hong Kong Polytechnic University under Grant No. GYH08.en
dc.publisherElsevier BVen
dc.subjectBiFeO 3en
dc.subjectPyroelectricen
dc.subjectSm 3+ dopingen
dc.titlePyroelectric properties and electrical conductivity in samarium doped BiFeO 3 ceramicsen
dc.typeArticleen
dc.contributor.departmentAdvanced Nanofabrication, Imaging and Characterization Core Laben
dc.contributor.departmentCore Labsen
dc.identifier.journalJournal of Alloys and Compoundsen
dc.contributor.institutionDepartment of Applied Physics, Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kongen
dc.contributor.institutionNational Laboratory of Solid State Microstructures, School of Modern Engineering and Applied Sciences, Nanjing University, Nanjing 210093, Chinaen
kaust.authorYao, Yingbangen
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