Pressure induced phase transition in antiferroelectric kno

Z. Iqbal; F. J. Owens

doi:10.1080/00150197708237165

Pressure induced phase transition in antiferroelectric kno

Z. Iqbal, F. J. Owens

Research output: Contribution to journal › Article › peer-review

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Abstract

The pressure induced I1 to IV phase transition in KNO3 has been studied by Raman scattering. In the antiferroelectric phase 11, the translational shear modes show larger pressure coefficients than the NOS- rotational vibrations, which were found to be weakly coupled at 295 K. In phase IV a drastic change in the potential around N03-sites occurs and the rotational modes show sizable pressure coefficients. The Raman data suggest that phase 1V has a structure of relatively low symmetry.

Original language	English (US)
Pages (from-to)	229-231
Number of pages	3
Journal	Ferroelectrics
Volume	16
Issue number	1
DOIs	https://doi.org/10.1080/00150197708237165
State	Published - Jan 1 1977
Externally published	Yes

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1080/00150197708237165

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title = "Pressure induced phase transition in antiferroelectric kno",

abstract = "The pressure induced I1 to IV phase transition in KNO3 has been studied by Raman scattering. In the antiferroelectric phase 11, the translational shear modes show larger pressure coefficients than the NOS- rotational vibrations, which were found to be weakly coupled at 295 K. In phase IV a drastic change in the potential around N03-sites occurs and the rotational modes show sizable pressure coefficients. The Raman data suggest that phase 1V has a structure of relatively low symmetry.",

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year = "1977",

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N2 - The pressure induced I1 to IV phase transition in KNO3 has been studied by Raman scattering. In the antiferroelectric phase 11, the translational shear modes show larger pressure coefficients than the NOS- rotational vibrations, which were found to be weakly coupled at 295 K. In phase IV a drastic change in the potential around N03-sites occurs and the rotational modes show sizable pressure coefficients. The Raman data suggest that phase 1V has a structure of relatively low symmetry.

AB - The pressure induced I1 to IV phase transition in KNO3 has been studied by Raman scattering. In the antiferroelectric phase 11, the translational shear modes show larger pressure coefficients than the NOS- rotational vibrations, which were found to be weakly coupled at 295 K. In phase IV a drastic change in the potential around N03-sites occurs and the rotational modes show sizable pressure coefficients. The Raman data suggest that phase 1V has a structure of relatively low symmetry.

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Pressure induced phase transition in antiferroelectric kno

Abstract

All Science Journal Classification (ASJC) codes

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