Internal-mode line-broadening by proton jumps in KH2PO4

I. Laulicht; N. Luknar

doi:10.1016/0009-2614(77)80008-0

Internal-mode line-broadening by proton jumps in KH₂PO₄

I. Laulicht, N. Luknar

Department of Physics - at Bar-Ilan University

Bar-Ilan University

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Abstract

The Raman linewidth of the 914 cm^-1 line of KH₂PO₄ in the ferroelectric phase has been measured as a function of temperature. The drastic decrease in linewidth with cooling near T_c is in fair agreement with a recent pseudo-spin-phonon coupling theory. A quantitative correlation has been found between the Raman linewidth, the spotaneous polarization and the proton spin-lattice relaxation time. A search for a similar effect on the corresponding line in KH₂AsO₄ gave negative results.

Original language	English
Pages (from-to)	237-240
Number of pages	4
Journal	Chemical Physics Letters
Volume	47
Issue number	2
DOIs	https://doi.org/10.1016/0009-2614(77)80008-0
State	Published - 15 Apr 1977

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title = "Internal-mode line-broadening by proton jumps in KH2PO4",

abstract = "The Raman linewidth of the 914 cm-1 line of KH2PO4 in the ferroelectric phase has been measured as a function of temperature. The drastic decrease in linewidth with cooling near Tc is in fair agreement with a recent pseudo-spin-phonon coupling theory. A quantitative correlation has been found between the Raman linewidth, the spotaneous polarization and the proton spin-lattice relaxation time. A search for a similar effect on the corresponding line in KH2AsO4 gave negative results.",

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N2 - The Raman linewidth of the 914 cm-1 line of KH2PO4 in the ferroelectric phase has been measured as a function of temperature. The drastic decrease in linewidth with cooling near Tc is in fair agreement with a recent pseudo-spin-phonon coupling theory. A quantitative correlation has been found between the Raman linewidth, the spotaneous polarization and the proton spin-lattice relaxation time. A search for a similar effect on the corresponding line in KH2AsO4 gave negative results.

AB - The Raman linewidth of the 914 cm-1 line of KH2PO4 in the ferroelectric phase has been measured as a function of temperature. The drastic decrease in linewidth with cooling near Tc is in fair agreement with a recent pseudo-spin-phonon coupling theory. A quantitative correlation has been found between the Raman linewidth, the spotaneous polarization and the proton spin-lattice relaxation time. A search for a similar effect on the corresponding line in KH2AsO4 gave negative results.

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Internal-mode line-broadening by proton jumps in KH₂PO₄

Abstract

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