1 Ocak 2003 Dergi makalesi Açık Erişim

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

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{
  "@context": "https://schema.org/", 
  "@id": 95153, 
  "@type": "ScholarlyArticle", 
  "creator": [
    {
      "@type": "Person", 
      "name": "Mitani, T"
    }, 
    {
      "@type": "Person", 
      "name": "Naitou, T"
    }, 
    {
      "@type": "Person", 
      "name": "Matsuishi, K"
    }, 
    {
      "@type": "Person", 
      "name": "Onari, S"
    }, 
    {
      "@type": "Person", 
      "name": "Allakhverdiev, K"
    }, 
    {
      "@type": "Person", 
      "name": "Gashimzade, F"
    }, 
    {
      "@type": "Person", 
      "name": "Kerimova, T"
    }
  ], 
  "datePublished": "2003-01-01", 
  "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.", 
  "headline": "Raman scattering in CdGa2Se4 under pressure", 
  "identifier": 95153, 
  "image": "https://aperta.ulakbim.gov.tr/static/img/logo/aperta_logo_with_icon.svg", 
  "license": "http://www.opendefinition.org/licenses/cc-by", 
  "name": "Raman scattering in CdGa2Se4 under pressure", 
  "url": "https://aperta.ulakbim.gov.tr/record/95153"
}