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Mobility of ferroelastic domain walls in barium titanate

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    0099156 - FZÚ 2008 RIV GB eng J - Journal Article
    Hlinka, Jiří
    Mobility of ferroelastic domain walls in barium titanate.
    [Pohyblivost feroelastických doménových stěn v BaTiO3]
    Ferroelectrics. Roč. 349, - (2007), s. 49-54. ISSN 0015-0193. E-ISSN 1563-5112
    R&D Projects: GA ČR GA202/06/0411
    Institutional research plan: CEZ:AV0Z10100520
    Keywords : ferroelectric and ferroelastic domains * BaTiO3 * Ginzburg-Landau theory * mobility
    Subject RIV: BM - Solid Matter Physics ; Magnetism
    Impact factor: 0.427, year: 2007

    Phenomenological theory of dissipation-limited motion of ferroelectric domain walls under external bias field is applied to the case of 90-degree domain wall in a defect-free BaTiO3 crystal. Quantitative estimation for the limiting mobility (5x10-4 m2/Vs at room temperature) is obtained in the framework of Landau-Khalatnikov equation of motion and generalized Ginzburg-Landau-Devonshire model, using model parameters estimated from results of independent experiments

    Fenomenologická teorie pohyblivosti doménových stěn byla aplikována na 90-ti stupňovou stěnu čistého BaTiO3 krystalu. V rámci zobecněného Ginzburg-Landau-Devonshire modelu a Landau-Khalatnikovy pohybové rovnice byl stanoven kvalitativní odhad mezní pohyblivosti v elektrickém poli (5x10-4 m2/Vs při pokojové teplotě).
    Permanent Link: http://hdl.handle.net/11104/0157867

     
     
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