Materials with giant mechanocaloric effects: cooling by strength

L Mañosa, A Planes - Advanced Materials, 2017 - Wiley Online Library
The search for materials with large caloric effects has become a major challenge in material
science due to their potential in develo** near room‐temperature solid‐state cooling …

Multiple twinning and variant-variant transformations in martensite: phase-field approach

VI Levitas, AM Roy, DL Preston - Physical Review B—Condensed Matter and …, 2013 - APS
A phase-field theory of transformations between martensitic variants and multiple twinning
within martensitic variants is developed for large strains and lattice rotations. It resolves …

Thermally activated avalanches: Jamming and the progression of needle domains

EKH Salje, X Ding, Z Zhao, T Lookman… - Physical Review B …, 2011 - APS
Large-scale computer simulations of a simple model with a square-lattice topology, a small
shear deformation (4° shear angle), and open (free) boundary conditions show that domain …

Nanoscale phase transition behavior of shape memory alloys—closed form solution of 1D effective modelling

MP Li, QP Sun - Journal of the Mechanics and Physics of Solids, 2018 - Elsevier
We investigate the roles of grain size (lg) and grain boundary thickness (lb) on the stress-
induced phase transition (PT) behaviors of nanocrystalline shape memory alloys (SMAs) by …

Phase-field approach to martensitic phase transformations: effect of martensite–martensite interface energy

VI Levitas, M Javanbakht - International journal of materials research, 2011 - degruyter.com
A generalization of the phase-field theory for multivariant martensitic phase transformations
is suggested that allows one to vary martensite–martensite interface energy independent of …

Dynamic thermo-mechanical coupling and size effects in finite shape memory alloy nanostructures

RP Dhote, RVN Melnik, J Zu - Computational Materials Science, 2012 - Elsevier
In this paper, the dynamics of martensitic transformations in shape memory alloy (SMA)
constrained finite nanostructures is studied using a phase field model with the Ginzburg …

Dynamically strained ferroelastics: Statistical behavior in elastic and plastic regimes

X Ding, T Lookman, Z Zhao, A Saxena, J Sun… - Physical Review B …, 2013 - APS
The dynamic evolution in ferroelastic crystals under external shear is explored by computer
simulation of a two-dimensional model. The characteristic geometrical patterns obtained …

Multiferroic (Nd, Fe)-doped PbTiO3 ceramics with coexistent ferroelectricity and magnetism at room temperature

F Craciun, F Cordero, M Cernea, V Fruth, I Atkinson… - Ceramics …, 2019 - Elsevier
We report the structural, dielectric, elastic, ferroelectric and ferromagnetic properties of
multiferroic (Nd, Fe)-doped PbTiO3 perovskite ceramics with composition (Pb 0.88 Nd …

Phase transitions at the nanoscale in functional materials

A Saxena, G Aeppli - MRS bulletin, 2009 - cambridge.org
Many properties of functional materials are quite different at the nanoscale, because at this
length scale, the surface/interface energy becomes comparable to the bulk energy. Thus, the …

Microstructure from ferroelastic transitions using strain pseudospin clock models in two and three dimensions: A local mean-field analysis

R Vasseur, T Lookman, SR Shenoy - Physical Review B—Condensed Matter …, 2010 - APS
We show how microstructure can arise in first-order ferroelastic structural transitions, in two
and three spatial dimensions, through a local mean-field approximation of their pseudospin …