1 Ocak 2003 Dergi makalesi Açık Erişim

Mitani, T; Naitou, T; Matsuishi, K; Onari, S; Allakhverdiev, K; Gashimzade, F; Kerimova, T

Dublin Core

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<oai_dc:dc xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
  <dc:creator>Mitani, T</dc:creator>
  <dc:creator>Naitou, T</dc:creator>
  <dc:creator>Matsuishi, K</dc:creator>
  <dc:creator>Onari, S</dc:creator>
  <dc:creator>Allakhverdiev, K</dc:creator>
  <dc:creator>Gashimzade, F</dc:creator>
  <dc:creator>Kerimova, T</dc:creator>
  <dc:date>2003-01-01</dc:date>
  <dc:description>The Raman scattering spectra of CdGa2Se4 under pressure were investigated at 300 K up to 20.9 GPa. TO as well as LO modes were observed. Two stages were observed in the pressure dependences of Raman bands. Such a behaviour was attributed to the order-disorder phase transition in the cation sublattice. A first-order phase transition under pressure was observed at 20.2 GPa. Using the Harrison-Keating model of the lattice dynamics modified for crystals with the tetragonal structure, the bulk modulus B and the mode-Gruneisen parameters Gamma(i) were determined for the first time. It is shown that a better agreement between the experimental and calculated values of Gamma(i) is observed if one takes into consideration the different behaviour with pressure for the bond-bending and the bond-stretching parameters, which determine the low-(lower than 140 cm(-1)) and high-(higher than 140 cm(-1)) frequency phonons, respectively.</dc:description>
  <dc:identifier>https://aperta.ulakbim.gov.trrecord/95153</dc:identifier>
  <dc:identifier>oai:zenodo.org:95153</dc:identifier>
  <dc:rights>info:eu-repo/semantics/openAccess</dc:rights>
  <dc:rights>http://www.opendefinition.org/licenses/cc-by</dc:rights>
  <dc:source>PHYSICA STATUS SOLIDI B-BASIC RESEARCH 235(2) 321-325</dc:source>
  <dc:title>Raman scattering in CdGa2Se4 under pressure</dc:title>
  <dc:type>info:eu-repo/semantics/article</dc:type>
  <dc:type>publication-article</dc:type>
</oai_dc:dc>