Listar Ingeniería por autor "Haines, Julian"

Mostrando ítems 1-2 de 2

    • High-pressure structural phase transitions in semiconducting niobium dioxide 

      Haines, Julian; Leger, Jean Michel; Pereira, Altair Soria; Häusermann, D.; Hanfland, M. (1999) [Artículo de periódico]
      Niobium dioxide was studied up to 47 GPa by angle-dispersive, x-ray powder diffraction. Semiconducting α − NbO 2 (space group I 4 1 / a , Z = 32 ) was found to transform to β − NbO 2 (space group I 4 1 , Z = 16 ) above 5 ...

    • 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) [Artículo 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 ...