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X-ray Studies of Lattice Dynamics

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Title: X-ray Studies of Lattice Dynamics
Author(s): Holt, Martin Victor
Doctoral Committee Chair(s): Chiang, T. C.
Department / Program: Physics
Discipline: Physics
Degree: Ph.D.
Genre: Dissertation
Subject(s): X-ray Diffraction Lattice Dynamics Phonon Dispersions
Abstract: Analysis of thermal diffuse scattering of x-rays (TDS) has recently shown great promise as a tool for phonon studies, complementing more traditional neutron scattering techniques. Quasi-elastic x-ray scattering from thermally populated phonon modes has been used to study lattice dynamics and phonon phase transitions in several systems. Several experiments are reviewed - the viability and accuracy of this method was established by establishing phonon dispersion curves (PDCs) in elemental systems including Si and Nb while the applicability to more complex materials was demonstrated by studying phonon softening in charge density wave (CDW) TiSe2 and antiferrodistortive (AFD) SrTiO3. This thesis work helps to develop analysis of x-ray thermal diffuse scattering as a viable method for studies of lattice dynamics.
Issue Date: 2002-12
Genre: Dissertation / Thesis
Type: Text
Language: English
Rights Information: ©2002 Martin Victor Holt
Date Available in IDEALS: 2012-10-13
Identifier in Online Catalog: 4870238

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