Lengths of ferroelectric domains: The role of defects and random fields
Voelker, Uwe and Dinges, Kai and Heine , Urs and Betzler , Klaus (2010) Lengths of ferroelectric domains: The role of defects and random fields. Physical Review B, 81 (21), pp. 214104-1. DOI: 10.1103/PhysRevB.81.214104.
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Official URL: http://link.aps.org/doi/10.1103/PhysRevB.81.214104
Using noncollinear optical second-harmonic generation, the characteristic lengths of ferroelectric domains in strontium-barium niobate are determined. The role of the domain geometry in the random quasiphase matching process involved is elucidated by model calculations on different domain arrangements. The calculations prove that the domain geometries—especially the domain lengths—strongly affect the angular distribution of the generated second-harmonic light. The evaluation of the measured angular distributions in crystals with different doping concentrations shows that the domain lengths are distinctly albeit not drastically influenced by the dopant-induced random electric or strain fields.
|Title:||Lengths of ferroelectric domains: The role of defects and random fields|
|Date:||07 June 2010|
|Journal or Publication Title:||Physical Review B|
|In ISI Web of Science:||Yes|
|Page Range:||pp. 214104-1|
|Keywords:||Frequency conversion, SHG, quasi phase matching, random media, ferroelectric domains|
|HGF - Research field:||no assignement|
|HGF - Program:||no assignment|
|HGF - Program Themes:||no assignment|
|DLR - Research area:||no assignement|
|DLR - Program:||no assignment|
|DLR - Research theme (Project):||other|
|Institutes and Institutions:||Institute of Technical Physics|
|Deposited By:||Uwe Völker|
|Deposited On:||17 Jul 2010 22:39|
|Last Modified:||26 Mar 2013 13:18|
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