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Discontinuous domain wall motion in the relaxor ferroelectric Sr0.61Ba0.39Nb2O6

Lupascu, Doru C. and Granzow, Torsten and Woike, Theo (2004):
Discontinuous domain wall motion in the relaxor ferroelectric Sr0.61Ba0.39Nb2O6.
In: Europhysics Letters (EPL), pp. 733-739, 68, (5), ISSN 0295-5075,
[Online-Edition: http://dx.doi.org/10.1209/epl/i2004-10257-7],
[Article]

Abstract

The relaxor ferroelectric strontium-barium-niobate is characterized by internal random electric fields at the origin of its relaxor behavior. The electric poling cycle induces an irreversible transition into a ferroelectric state accompanied by a large flow of mobile charges. Bipolar fields applied in the poled state yield no acoustic emissions for half-cycles in poling direction. In contrast, discontinuous domain wall movement is observed under reverse fields. The data cannot be explained by homogeneous clouds or gradients of space charge, but necessitate charge cluster formation to a certain degree. The irreversibility of the poling process necessitates charge carrier activation by large electric fields.

Item Type: Article
Erschienen: 2004
Creators: Lupascu, Doru C. and Granzow, Torsten and Woike, Theo
Title: Discontinuous domain wall motion in the relaxor ferroelectric Sr0.61Ba0.39Nb2O6
Language: English
Abstract:

The relaxor ferroelectric strontium-barium-niobate is characterized by internal random electric fields at the origin of its relaxor behavior. The electric poling cycle induces an irreversible transition into a ferroelectric state accompanied by a large flow of mobile charges. Bipolar fields applied in the poled state yield no acoustic emissions for half-cycles in poling direction. In contrast, discontinuous domain wall movement is observed under reverse fields. The data cannot be explained by homogeneous clouds or gradients of space charge, but necessitate charge cluster formation to a certain degree. The irreversibility of the poling process necessitates charge carrier activation by large electric fields.

Journal or Publication Title: Europhysics Letters (EPL)
Volume: 68
Number: 5
Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences > Material Science > Nonmetallic-Inorganic Materials
Zentrale Einrichtungen
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > B - Characterisation
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > B - Characterisation > Subproject B5: Model experiments about interactions between ferroelectric domains with point defects and their agglomerates
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres
DFG-Collaborative Research Centres (incl. Transregio)
Date Deposited: 14 Jun 2011 12:20
Official URL: http://dx.doi.org/10.1209/epl/i2004-10257-7
Additional Information:

SFB 595 B5

Identification Number: doi:10.1209/epl/i2004-10257-7
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