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  1. No Access

    Article

    Fundamental Cluster and Hydrogen Sites in Ti-Zr-Ni Quasicrystals

    A Rietveld refinement confirmed by ab initio calculations [1] has shown that the structure of the related W-phase [2] 1/1 approximant consists of Bergman clusters connected by “glue” sites. To investigate if t...

    E. H. Majzoub, R. G. Hennig, K. F. Kelton, P. C. Gibbons… in MRS Online Proceedings Library (2001)

  2. No Access

    Article

    Hydrogen absorption in Ti45Zr38-xNi17+x quasicrystals and measurements of the equilibrium vapor pressure

    To evaluate their technological usefulness and to probe the local structure of the quasicrystal, p-c-T curves were measured for as-quenched Ti45Zr38Ni17 and Ti45Zr30Ni25 quasicrystal ribbons at 350°C with a compu...

    Jae-yong Kim, P. C. Gibbons, K. F. Kelton in Metals and Materials (1999)

  3. No Access

    Article

    Measurements of the Hydrogen Absorption Pressurecomposition Isotherms IN Ti/Zr-Based Quasicrystals

    The first hydrogen absorption pressure-composition isotherms (p-c-T) were measured in quasicrystalline Ti45Zr38Ni17. No evidence for a pressure plateau was found, indicating a distribution of energies for the hyd...

    J. Y. Kim, E. H. Majzoub, P. C. Gibbons, K. F. Kelton in MRS Online Proceedings Library (1998)

  4. No Access

    Article

    Hydrogen Sites in the α(TiCrSiO) 1/1 Approximant Phase

    Crystal approximant phases are important because they are believed to have a similar local atomic structure to corresponding quasicrystals. Interstitial hydrogen is used as a probe of the local structures of t...

    J. Y. Kim, W. J. Kim, W. B. Yelon, P. C. Gibbons… in MRS Online Proceedings Library (1998)

  5. No Access

    Article

    Hydrogen Storage in Quasicrystals

    K. F. Kelton, P. C. Gibbons in MRS Bulletin (1997)

  6. No Access

    Article

    Ti-Zr-Ni Quasicrystals: Structure and Hydrogen Storage

    Titanium-based icosahedral phases constitute the second largest class of quasicrystals. In contrast with other Ti-based icosahedral phases (i-phases), Ti-Zr-Ni i-phases are well ordered and their formation is ...

    R. M. Stroud, A. M. Viano, E. H. Majzoub, P. C. Gibbons… in MRS Online Proceedings Library (1995)

  7. No Access

    Article

    Twins in YBa2Cu3O7-δ

    High-resolution TEM images of well-characterized YBa2Cu3O7-δ prove that atomic disorder in the {110} twin boundaries is confined to within 20 A of the boundaries, and suggest that there is disorder within those r...

    P. C Gibbons, K. F. Kelton, Z. Y. Li, L. Mantese… in MRS Online Proceedings Library (1987)