LANDAU THEORY AND MARTENSITIC PHASE TRANSITIONS
نویسندگان
چکیده
منابع مشابه
Landau Theory and Martensitic Phase Transitions
Landau theory proved i t s e l f appropriate f o r descr ibing phase t r a n s i t i o n s i n systems such a s f e r r o e l e c t r i c s and ferromagnets. Primarily Landau establ ished the theory f o r second order phase t r a n s i t i o n s . Later on Devonshire generalized Landau's approach t o f i r s t order t r a n s i t i o n s . The essen t ia l point of Landau theory i s a power s e...
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An effect of the volume change upon proper ferroelastic (martensitic) phase transitions in cubic crystals is considered. Corresponding terms in the Ginzburg-Landau expansion of the Gibbs free energy are analyzed for the first-as well as second-order phase transitions from cubic to tetragonal lattice under the action of uniaxial and hydrostatic pressure. The pressure effect on the critical tempe...
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The aim of this presentation is the development of a general approach for modelling the global complex energy landscapes of phase transitions. For the sake of clarity and brevity the exposition is restricted to martensitic phase transition (i.e., diffusionless phase transitions in crystalline solids). The methods, however, are more broadly applicable. Explicit energy functions are derived for t...
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Abstract. We obtain a closing kinetic relation for a mixed type hyperbolic-elliptic p-system originating in the theory of martensitic phase transitions by replacing continuum model with its natural discrete prototype. The procedure can be viewed as either regularization by discretization or as a physically motivated account of underlying discrete (atomic or mesoscopic) microstructure. Our fully...
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We propose a simple one-dimensional model which can be used to reconstruct the Peierls-Nabarro energy landscape and compute the limits of lattice trapping for martensitic phase transitions. The model represents a nontrivial analog of the discrete Frenkel-Kontorova model. We find the explicit expression for the critical driving force which sets phase boundaries in motion and delimits the width o...
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ژورنال
عنوان ژورنال: Le Journal de Physique Colloques
سال: 1982
ISSN: 0449-1947
DOI: 10.1051/jphyscol:1982401