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Ferroelectrics Volume 353, 2007 - Issue 1
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Original Articles

Broad Distribution of Relaxation Times in 0.6PMN-0.4PZN Relaxor Ceramics

Robertas Grigalaitis Faculty of Physics, Vilnius University, Sauletekio 9, Vilnius, Lithuania
,
Juras Banys Faculty of Physics, Vilnius University, Sauletekio 9, Vilnius, Lithuania
,
Andrius Dziaugys Faculty of Physics, Vilnius University, Sauletekio 9, Vilnius, Lithuania
,
Algirdas Brilingas Faculty of Physics, Vilnius University, Sauletekio 9, Vilnius, Lithuania
,
Andris Sternberg Institute of Solid State Physic, University of Latvia, 8 Kengaraga str., Riga, 1063, Latvia
,
Vismants Zauls Institute of Solid State Physic, University of Latvia, 8 Kengaraga str., Riga, 1063, Latvia
&
Karlis Bormanis Institute of Solid State Physic, University of Latvia, 8 Kengaraga str., Riga, 1063, Latvia
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Pages 3-9 | Received 05 Sep 2006, Accepted 11 Oct 2006, Published online: 08 Jun 2007
 
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Abstract

In this paper dielectric spectra of 0.6PMN-0.4PZN ceramic obtained from broadband dielectric spectroscopy is presented. Measurements revealed an unusual relaxor like nature. Two different processes in the dielectric spectra have been observed. High frequency, or short relaxation times, behaviour is typical for ferroelectric crystals. Longest relaxation times do not follow Vogel—Fulcher dependence, which is unusual for relaxors.

Acknowledgment

This work was supported by Lithuanian science and study foundation project V-01/2006 and COST 539.

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