Anomaly of the Raman Linewidth of the Internal u2 Mode near the Phase Transition Point of K3D(SO4)2

Masaru Kasahara; Pho Kaung; Toshirou Yagi

doi:10.1143/jpsj.63.441

Journal of the Physical Society of Japan

Online ISSN : 1347-4073
Print ISSN : 0031-9015
ISSN-L : 0031-9015

Anomaly of the Raman Linewidth of the Internal u₂ Mode near the Phase Transition Point of K₃D(SO₄)₂

Masaru Kasahara, Pho Kaung, Toshirou Yagi

著者情報

キーワード: K₃D(SO₄)₂, Raman scattering, internal mode, motional narrowing

ジャーナル認証あり

1994 年 63 巻 2 号 p. 441-444

DOI https://doi.org/10.1143/jpsj.63.441

詳細

抄録

The linewidth of the internal mode ν ₂ of SO₄^2- ion of the antiferroelectric K₃D(SO₄)₂ shows the anomalous broadening with lowering temperature near the phase transition point. The broadening is well explained by a mechanism resembling the motional narrowing phenomenon in the nuclear magnetic resonance theory. The characteristic time of the motion of deuteron in a hydrogen bond is estimated to be on the order of 10^-13, s.