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Direct observation of the formation of polar nanoregions in Pb(Mg <inf>1/3</inf>Nb<inf>2/3</inf>)O<inf>3</inf> using neutron pair distribution function analysis

Jeong, IK and Darling, TW and Lee, JK and Proffen, T and Heffner, RH and Park, JS and Hong, KS and Dmowski, W and Egami, T (2005) Direct observation of the formation of polar nanoregions in Pb(Mg <inf>1/3</inf>Nb<inf>2/3</inf>)O<inf>3</inf> using neutron pair distribution function analysis. Physical Review Letters, 94 (14). ISSN 0031-9007

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Abstract

Using neutron pair distribution function analysis over the temperature range from 1000 to 15 K, we demonstrate the existence of local polarization and the formation of medium-range, polar nanoregions (PNRs) with local rhombohedral order in a prototypical relaxor ferroelectric Pb(Mg1/3Nb 2/3)O3. We estimate the volume fraction of the PNRs as a function of temperature and show that this fraction steadily increases from 0% to a maximum of ∼30% as the temperature decreases from 650 to 15 K. Below T ∼ 200 K the volume fraction of the PNRs becomes significant, and PNRs freeze into the spin-glass-like state. © 2005 The American Physical Society.


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Details

Item Type: Article
Status: Published
Creators/Authors:
CreatorsEmailPitt UsernameORCID
Jeong, IK
Darling, TW
Lee, JKjul37@pitt.eduJUL370000-0002-7778-7679
Proffen, T
Heffner, RH
Park, JS
Hong, KS
Dmowski, W
Egami, T
Centers: Other Centers, Institutes, or Units > Petersen Institute of NanoScience and Engineering
Date: 15 April 2005
Date Type: Publication
Journal or Publication Title: Physical Review Letters
Volume: 94
Number: 14
DOI or Unique Handle: 10.1103/physrevlett.94.147602
Schools and Programs: Swanson School of Engineering > Mechanical Engineering and Materials Science
Refereed: Yes
ISSN: 0031-9007
Date Deposited: 12 Nov 2014 17:26
Last Modified: 05 Feb 2019 19:55
URI: http://d-scholarship.pitt.edu/id/eprint/23497

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