Navegação por Assunto "Fonons"

Resultados 1-3 de 3

    • Ajuste de curvas de calor específico de compostos Heusler com a função de Debye 

      Marks, Henrique Salvador Cabral; Brandao, Delmar Estevam (1996) [Resumo publicado em evento]

    • High temperature emissivity, reflectivity, and x-ray absorption of BiFeO3 

      Massa, Néstor E.; Del Campo, Leire; Meneses, Domingos de Souza; Echegut, Patrick; Fabbris, Gilberto Fernandes Lopes; Azevedo, Gustavo de Medeiros; Martínez Lope, María Jesús; Alonso, José Antônio (2010) [Artigo de periódico]
      We report on the lattice evolution of BiFeO3 as function of temperature using far infrared emissivity, reflectivity, and x-ray absorption local structure. A power law fit to the lowest frequency soft phonon in the magnetic ...

    • Ultrastable phonon frequencies in α-quartz-type BPO4 at high temperature 

      Le-Parc, Rozenn; Buixaderas, Elena; Levelut, Claire; Hermet, Patrick; Pereira, Altair Soria; Cambon, Olivier; Roiland, Claire; Simon, Patrick; Haines, Julian (2019) [Artigo de periódico]
      The Raman modes of α-quartz-type boron phosphate were found to be extremely stable in frequency over a large temperature range from 300–1000 K. In order to determine the origin of this behavior, the material was also studied ...