Observation of inhomogeneity in congruent LiTaO3 crystal

(整期优先)网络出版时间:2001-02-12
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TheinhomogeneityinacongrunetLiTaO3crystalhasbeenobservedbytransmissionsynchrotrontopography.ManyextraordinaryregionsexistincongruentLiTaO3crystalandtheyoftenshowdiffractionintensitydifferentfromthatofordinaryregionsinsynchrotrontopographs.DifferentialthermalanalysisindiatesthattheCurietemperatureoftheextraordinaryregionislowerthanthatofordinaryregion,andtheextraordinaryregionisreallyahighdefectdensityregion.Thediffractioncontrastoftheextraordinaryregioninsynchrotrontopographsisexplainedqualitativelybyacalculationattheselectedwavelength.2001PublishedbyElsevierScienceB.V.