Dielectric anomalies induced by different mechanisms in Pb(Fe1/2Nb1/2)1-xTixO3 single crystals

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dc.creatorLiu, Kui
dc.creatorZhang, Xinyi
dc.creatorWei, Shiqiang
dc.creatorOyanagi, H.
dc.creatorXiao, Jingzhong
dc.date2008-10-08
dc.date2008-12-24
dc.date.accessioned2026-07-07T12:21:35Z
dc.date.available2026-07-07T12:21:35Z
dc.descriptionWe investigated the dielectric properties of Pb(Fe1/2Nb1/2)1-xTixO3 single crystals below room temperature. Two dielectric anomalies were detected in sample A while only one was detected in sample B in the temperature range 90~300 K. A Debye-like relaxation with strong frequency dispersion was detected in both samples. The pre-edge XAFS suggests that this dielectric anomaly is induced by the hopping conductivity between Fe2+ and Fe3+. The EXAFS results give us a clear picture of the local structure of iron ions. The weak frequency dependent dielectric anomaly only observed in sample A is supposed to be due to the dipole glass behavior.
dc.description12 pages, 5 figures, 1 table
dc.identifierhttps://arxiv.org/abs/0810.1346
dc.identifierhttp://arxiv.org/abs/0810.1346
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/213382
dc.subjectMaterials Science
dc.titleDielectric anomalies induced by different mechanisms in Pb(Fe1/2Nb1/2)1-xTixO3 single crystals
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