Investigation of ferroelectric properties of strontium barium niobate crystals by second harmonic generation technique.
In: Physics of the Solid State, Jg. 51 (2009-11-01), Heft 11, S. 2334-2341
Online
academicJournal
Zugriff:
The ferroelectric properties of Sr xBa1 − xNb2O6 (SBN- x) crystals have been investigated using noncollinear (diffuse) second harmonic generation of IR radiation converted by a disordered domain structure. The switching characteristics have been determined from the dependences of the second harmonic intensity I2ω( t) and I2ω( E) for the SBN-0.75 crystals. These characteristics are in good agreement with the results of measurements by traditional methods and exhibit a number of specific features (long polarization relaxation times, irreproducibility of the shape of hysteresis loops, low-frequency dependence of the quantity E c) associated with the relaxor nature of SBN solid solutions. The kinetics of the diffuse second harmonic generation can be described in the framework of the phenomenological approach to polarization relaxation processes in relaxor ferroelectrics. The intensity of the diffuse second harmonic in switching is determined by the parameters (duration, amplitude) of the switching field pulse. [ABSTRACT FROM AUTHOR]
| Titel: |
Investigation of ferroelectric properties of strontium barium niobate crystals by second harmonic generation technique.
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| Autor/in / Beteiligte Person: | Isakov, D. V. ; Volk, T. R. ; Ivleva, L. I. |
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| Zeitschrift: | Physics of the Solid State, Jg. 51 (2009-11-01), Heft 11, S. 2334-2341 |
| Veröffentlichung: | 2009 |
| Medientyp: | academicJournal |
| ISSN: | 1063-7834 (print) |
| DOI: | 10.1134/S1063783409110237 |
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