Search for dissertations about: "lattice dynamics"

Showing result 6 - 10 of 93 swedish dissertations containing the words lattice dynamics.

  1. 6. Simulation of lattice defacts im metals

    University dissertation from Stockholm : Fysik

    Author : Mattias Forsblom; KTH.; [2002]
    Keywords : lattice defect; dislocation; stacking fault; face-centered cubic structure; molecular dynamics; vibrational entropy;

    Abstract : .... READ MORE

  2. 7. Computer Simulations of Polymer Gels Structure, Dynamics, and Deformation

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Natasha Kamerlin; Uppsala universitet.; [2017]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; computer simulations; Brownian dynamics; polymer gel; microgel; spherical boundary conditions; hypersphere; core-shell; deswelling; mechanical properties; uniaxial elongation;

    Abstract : This thesis presents the results of computer simulation studies of the structure, dynamics, and deformation of cross-linked polymer gels. Obtaining a fundamental understanding of the interrelation between the detailed structure and the properties of polymer gels is a challenge and a key issue towards designing materials for specific purposes. READ MORE

  3. 8. Magnetization dynamics on the nanoscale From first principles to atomistic spin dynamics

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Jonathan Philippe Chico Carpio; Uppsala universitet.; [2016]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Physics with spec. in Atomic; Molecular and Condensed Matter Physics; Fysik med inriktning mot atom- molekyl- och kondenserande materiens fysik;

    Abstract : In this thesis first-principles methods, based on density functional theory, have been used to characterize a wide range of magnetic materials. Special emphasis has been put on pairwise magnetic interactions, such as Heisenberg exchange and Dzyaloshinskii-Moriya interactions, and also on in the Gilbert damping parameter. READ MORE

  4. 9. Structure and Dynamics in Transition Metal Perovskites — An Optical Spectroscopy Study

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Johan Bielecki; [2012]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; multiferroics; colossal magnetoresistance; magnetism; proton-conduction; spin-state transition; structure; Ultrafast spectroscopy; high temperature superconductivity; dynamics; Raman;

    Abstract : Transition metal oxides with the perovskite structure exhibit a vast number of exotic properties due to the large number of competing degrees of freedom at the Fermi surface. Together with couplings between and correlations within these degrees of freedom, this class of materials is of high interest from both a practical and theoretical point of view. READ MORE

  5. 10. Magnetization dynamics of complex magnetic materials by atomistic spin dynamics simulations

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Raghuveer Chimata; Uppsala universitet.; [2017]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Ultrafast remagnetization; ultrafast dynamics; magnetism; multiferroics; amorphous alloys; DFT; spinels magnetostriction; Physics with spec. in Atomic; Molecular and Condensed Matter Physics; Fysik med inriktning mot atom- molekyl- och kondenserande materiens fysik;

    Abstract : In recent years, there has been an intense interest in understanding the microscopic mechanism of laser induced ultrafast magnetization dynamics in picosecond time scales. Magnetization switching on such a time scale has potential to be a significant boost for the data storage industry. READ MORE