Riemer, LM, Chu, K, Li, Y orcid.org/0000-0002-4980-1592 et al. (4 more authors) (2020) Macroscopic polarization in the nominally ergodic relaxor state of lead magnesium niobate. Applied Physics Letters, 117 (10). 102901. p. 102901. ISSN 0003-6951
Abstract
Macroscopic polarity and its dynamic response to external electric fields and temperature in the nominally ergodic relaxor phase of pristine lead magnesium niobate crystals and ceramics, Pb(Mg1/3Nb2/3)O3 (PMN), were investigated. Dynamic pyroelectric measurements provide evidence for persistent macroscopic polarity of the samples. Annealing experiments below and above Burns temperature of polarized samples relate this polarity to the presence of polar nano-entities and their dynamics. The dc electric field strength required for macroscopic polarization reversal is similar to the amplitude of the ac field where dynamic nonlinear dielectric permittivity reaches its maximum. Consequently, the aforementioned maximum is related to the reorientation of polar nano-entities. The results question the existence of an ergodic state in PMN below Burns temperature.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2020 Author(s). Published under license by AIP Publishing. This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Riemer, L.M. et al., 2020. Macroscopic polarization in the nominally ergodic relaxor state of lead magnesium niobate. Applied Physics Letters, 117(10), p.102901 and may be found at http://dx.doi.org/10.1063/5.0018243. |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Chemical & Process Engineering (Leeds) |
Funding Information: | Funder Grant number EPSRC (Engineering and Physical Sciences Research Council) EP/R010293/1 |
Depositing User: | Symplectic Publications |
Date Deposited: | 14 Sep 2020 11:52 |
Last Modified: | 08 Sep 2021 00:38 |
Status: | Published |
Publisher: | American Institute of Physics |
Identification Number: | 10.1063/5.0018243 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:165346 |