Published June 7, 2006 | Version v1
Journal article Metadata-only

Temperature and pressure studies of Raman peaks related to hydrogen modes in KDP

Creators

  • 1. Department of Materials Physics, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531 (Japan)
  • 2. Research Center for Materials Science at Extreme Conditions, Osaka University, Toyonaka, Osaka 560-8531 (Japan)
  • 3. Department of Physics and Chemistry, Graduate School of Humanities and Sciences, Ochanomizu University, Otsuka, Bunkyo-ku, Tokyo 112-8610 (Japan)

Description

Raman scattering spectra of a KH2PO4 (KDP) single crystal have been obtained under various temperature and pressure conditions. It was observed that (i) the peak around 1310 cm-1 is not a single peak as reported previously but consists of two components and (ii) in the ferroelectric phase the 1013, 1306 and 1315 cm-1 peaks become obscure near the ferroelectric-paraelectric phase boundary. Furthermore, they show positive pressure shifts and the pressure coefficients are obtained. An interpretation is proposed for the origins of these Raman peaks

Availability note (English)

Available online at http://stacks.iop.org/0953-8984/18/5185/cm6_22_018.pdf or at the Web site for the Journal of Physics. Condensed Matter (ISSN 1361-648X) http://www.iop.org/

Additional details

Identifiers

URL
http://stacks.iop.org/0953-8984/18/5185/cm6_22_018.pdf; http://www.iop.org/;
DOI
10.1088/0953-8984/18/22/018;
PII
S0953-8984(06)19782-9;

Publishing Information

Journal Title
Journal of Physics. Condensed Matter
Journal Volume
18
Journal Issue
22
Journal Page Range
p. 5185-5190
ISSN
0953-8984
CODEN
JCOMEL

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
38001349
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Descriptors DEI
FERROELECTRIC MATERIALS; HYDROGEN; HYDROGEN COMPOUNDS; MONOCRYSTALS; POTASSIUM PHOSPHATES; PRESSURE COEFFICIENT; RAMAN EFFECT; RAMAN SPECTRA
Descriptors DEC
ALKALI METAL COMPOUNDS; CRYSTALS; DIELECTRIC MATERIALS; ELEMENTS; MATERIALS; NONMETALS; OXYGEN COMPOUNDS; PHOSPHATES; PHOSPHORUS COMPOUNDS; POTASSIUM COMPOUNDS; REACTIVITY COEFFICIENTS; SPECTRA