DIELECTRIC-RELAXATION AND NANOSTRUCTURE I N A PEROVSKITE CERAMIC OF COMPOSITION PB1-3X 2LAX (MG1/3NB2/3)O3/

Authors
ELISSALDE C RAVEZ J
Citation
C. Elissalde et J. Ravez, DIELECTRIC-RELAXATION AND NANOSTRUCTURE I N A PEROVSKITE CERAMIC OF COMPOSITION PB1-3X 2LAX (MG1/3NB2/3)O3/, Physica status solidi. a, Applied research, 142(1), 1994, pp. 291-298
Citations number
7
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physica status solidi. a, Applied research → ACNP
ISSN journal
00318965
Volume
142
Issue
1
Year of publication
1994
Pages
291 - 298
Database
ISI
SICI code
0031-8965(1994)142:1<291:DANINA>2.0.ZU;2-Z
Abstract
For ceramics of composition Pb1-3x/2Lax(Mg1/3Nb2/3)O3 (PLMN) a strongl y frequency and temperature dependent dielectric behaviour is observed . In the whole temperature range considered (200 to 450 K) a high-freq uency relaxation exists. A lower-frequency relaxation occurs at T less -than-or-equal-to T(m) (T(m) = 251 K at 10(3) Hz). The dielectric prop erties of PLMN are compared with those described recently for Pb(Mg1/3 Nb2/3)03 and solid solutions Pb(Mg1/3Nb2/3)O3-PbTiO3. A correlation be tween nanostructure and dielectric response is established; especially the importance of the size of ordered regions (Mg: Nb = 1:1) is evide nced.