Browsing Exact and Earth Sciences by Author "Haines, Julian"

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    • Hardness and elasticity in cubic ruthenium dioxide 

      Leger, Jean Michel; Djemia, P.; Ganot, F.; Haines, Julian; Pereira, Altair Soria; Jornada, Joao Alziro Herz da (2001) [Journal article]
      The Knoop hardness of the highly incompressible cubic phase of ruthenium dioxide was found to be 19–20 GPa from indentation tests. This value scales well with the shear modulus approximated by the elastic constant C44 of ...

    • 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) [Journal article]
      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 ...