6533b7d5fe1ef96bd12645ad

RESEARCH PRODUCT

Radio and Microwave Spectroscopy of 0.2PMN-0.4PSN-0.4PZN Relaxor Ceramics

A. StenbergJ. BanysA. BrilingasJonas GrigasJan MacutkevicKarlis Bormanis

subject

PermittivityMaterials scienceRelaxation (NMR)Analytical chemistryDielectricCondensed Matter PhysicsFerroelectricityZirconateElectronic Optical and Magnetic MaterialsDielectric spectroscopyNuclear magnetic resonancevisual_artvisual_art.visual_art_mediumRotational spectroscopyCeramic

description

Dielectric spectroscopy results of 0.2PbMg 1/3 Nb 2/3 O 3 -0.4PbSc 1/2 Nb 1/2 O 3 -0.4PbZn 1/3 Nb 2/3 O 3 ceramics are reported for 200 < T < 450 K and 20 Hz < v < 11 GHz. Dielectric constant is very high (more than 12000) in the vicinity of the peak. Anomalous broad dielectric relaxation has been observed near and below the temperature of the maximum permittivity, T m (at 1 kHz). The distribution of relaxation times have been calculated directly from the dielectric spectra. At higher temperatures than the maximum permittivity, T m the distribution of the relaxation times is symmetrically shaped (Cole-Cole function satisfactory describes the dielectric response). At lower temperatures, the distribution of relaxation times becomes asymmetrically shaped. On further cooling the second maximum appears.

yearjournalcountryeditionlanguage
2005-07-01Ferroelectrics
https://doi.org/10.1080/00150190590966414