Work

Relation between Dielectric and Low-Frequency Raman Spectra of Hydrogen-Bond Liquids

Year: 2005

Type: article

Abstract: We analyzed the complex dielectric and Raman spectra of hydrogen-bond liquids in the microwave to terahertz frequency range. As for water and methanol, the high-frequency component of the dielectric spectrum, i.e., the small deviation from the principal Debye relaxation, clearly corresponds to the Raman spectrum. This indicates that the cooperative relaxation, accompanied by huge polarization fluctuation, is virtually not Raman active, whereas the faster processes reflect common microscopic dynamics. For ethylene glycol, the shape of the Raman spectrum also resembles that of the high-frequency deviation of the dielectric spectrum, but, additionally, a weak manifestation of the cooperative relaxation arising from quadrupolar conformers is detected.

Source: Physical Review Letters

DOI: 10.1103/physrevlett.95.197802

Authors: Toshiko Fukasawa, Takaaki Sato, Junji Watanabe, Yoshimasa Hama, Werner Kunz, Richard Buchner

Institutions: Waseda University, The University of Osaka, University of Regensburg

Language: English

Topic: Material Dynamics and Properties

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: green

Funders: Ministry of Education, Culture, Sports, Science and Technology, Waseda University, Japan Society for the Promotion of Science

OpenAlex ID: W2034425157

FWCI: 3.469

Cites: 17

Cited by: 358

Related to: 10