Diffuse X-Ray Diffraction and Neutron Inelastic Scattering from Modulated Crystals

  • Minoru Fujimoto


Idealized crystals consisting of a large number of identical atoms or molecules can be considered as macroscopically homogeneous, if in equilibrium with isotropic surroundings specified by external pressure p and temperature T. In this case, their thermodynamical properties are described by the Gibbs potential G(p, T). While the presence of surfaces cannot be ignored entirely, bulk properties prevail in a large uniform crystal that is signified by translational symmetry and periodic boundary conditions. For a crystal undergoing a structural change, the crystalline phases above and below the transition temperature T c are primarily so idealized in the first approximation. In the transition region. in contrast, the crystal becomes spatially inhomogeneous, arising from locally violated translational symmetry.


Inelastic Scattering Neutron Inelastic Scattering Neutron Intensity Perovskite Crystal Atomic Form Factor 
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Copyright information

© Springer Science+Business Media New York 1997

Authors and Affiliations

  • Minoru Fujimoto
    • 1
  1. 1.Department of PhysicsUniversity of GuelphGuelphCanada

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