Now showing items 1-9 of 9

  • Ginzburg-Landau modelling of precursor nanoscale textures in ferroelastic materials 

    Planes, Antoni; Lloveras Muntané, Pol Marcel; Castán, Teresa; Saxena, Avadh; Porta, Marcel (2012-11)
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    A Ginzburg–Landau free-energy model is proposed to study spatially inhomogeneous states that often occur as precursors of ferroelastic/martensitic transitions. Disorder is included in the harmonic coefficient of the ...
  • Glassy behavior in martensites: Interplay between elastic anisotropy and disorder in zero-field-cooling/field-cooling simulation experiments 

    Lloveras Muntané, Pol Marcel; Castán, Teresa; Porta, Marcel; Planes, Antoni; Saxena, Avadh (2009-08-17)
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    We study the combined effect of elastic anisotropy and disorder on the microstructure and thermodynamic behavior in alloys undergoing a martensitic transformation. Within a Ginzburg-Landau free-energy framework we find the ...
  • Influence of elastic anisotropy on structural nanoscale textures 

    Lloveras Muntané, Pol Marcel; Castán, Teresa; Porta, Marcel; Planes, Antoni; Saxena, Avadh (2008-04-25)
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    We study the influence of elastic anisotropy on nanoscale precursor textures that exist in some shapememory alloys and show that tweed occurs in the limit of high elastic anisotropy while a nanocluster phase-separated state ...
  • Intermittent dynamics in externally driven ferroelastics and strain glasses 

    Porta, Marcel; Castán Vidal, Teresa; Lloveras Muntané, Pol Marcel; Saxena, Avadh; Planes Vila, Antoni (American Institute of Physics (AIP), 2018-09-28)
    Article
    Open Access
  • Modelling magnetostructural textures in magnetic shape-memory alloys: Strain and magnetic glass behaviour 

    Lloveras Muntané, Pol Marcel; Touchagues, Gilles; Castán, Teresa; Lookman, Turab; Porta, Marcela; Saxena, Avadh; Planes Vila, Antoni (2014-10-01)
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    In this paper, we propose a model that combines a Landau free energy part and a micromagnetic free energy part aimed at describing a magnetostructural multiferroic. We show that in the limit of high-elastic anisotropy and ...
  • Modelling shape-memory effects in ferromagnetic alloys 

    Gebbia, Jonathan F.; Lloveras Muntané, Pol Marcel; Planes Vila, Antoni; Castán Vidal, Teresa; Saxena, Avadh (Springer, 2015-07-21)
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    We develop a combined Ginzburg–Landau/micromagnetic model dealing with conventional and magnetic shape-memory properties in ferromagnetic shape-memory materials. The free energy of the system is written as the sum of ...
  • Multiferroic and related hysteretic behavior in ferromagnetic shape memory alloys 

    Gebbia, Jonathan Fernando; Castán Vidal, Teresa; Lloveras Muntané, Pol Marcel; Porta Tena, Marcel; Saxena, Avadh; Planes Vila, Antoni (2017-08-29)
    Article
    Open Access
    We combine a Ginzburg–Landau model for a ferroelastic transition with the theory of micromagnetism to study the magnetostructural behavior leading to multicaloric effects in ferromagnetic shape memory alloys. We analyze ...
  • Spatially correlated disorder in self-organized precursor magnetic nanostructures 

    Porta, Marcel; Castán, Teresa; Lloveras Muntané, Pol Marcel; Planes, Antoni; Saxena, Avadh (2007-08-20)
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    We study the scaling behavior of the characteristic length of precursor magnetic nanostructures above the Curie temperature with the correlation length of quenched-in disorder. We found that the modulation length of the ...
  • Thermodynamics of stress-induced ferroelastic transitions: Influence of anisotropy and disorder 

    Lloveras Muntané, Pol Marcel; Castán, Teresa; Porta, Marcel; Planes, Antoni; Saxena, Avadh (2010-06-07)
    Article
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    Stress-induced stress-strain constitutive behavior has been studied in detail in ferroelastic martensites. It has been found that the weights of the long-range anisotropic interactions and of the disorder are important ...