Molecular mechanics of the ferroelectric to paraelectric phase transition in LiNbO3 via optical second harmonic generation |
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| Authors: | J.G. Bergman |
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| Affiliation: | Bell Laboratories, Holmdel, New Jersey 07733, USA |
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| Abstract: | Temperature dependent optical second harmonic generation (SHG) results are used to monitor the 7° trigonal deformation of the NbO6 octahedron in ferroelectric LiNbO3. The SHG structural results compare favorably with those obtained from conventional (X-ray) techniques. The temperature dependence of the spontaneous polarization Ps, calculated via the same trigonal deformation model is consistent with the experimental observations. |
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