X-ray Studies of Lattice Dynamics

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.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Physics

Year dc:date

2012

Author dc:creator

• Holt, Martin Victor

Contributors dc:contributor

• Chiang, Tai-Chang

• X-ray Diffraction
• Lattice Dynamics
• Phonon Dispersions

Statement dc:rights

• ©2002 Martin Victor Holt

Language dc:language

en

Identifier

4870238

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/34746