Suppression of spinodal instability by disorder in an athermal system
arXiv:2102.11347 · doi:10.1103/PhysRevB.104.144102
Abstract
We observed asymmetric critical slowing down and asymmetric dynamical scaling exponent in the superheating and supercooling kinetic processes during the thermally-induced metal-insulator transition of MnNiSn based heusler alloy. During the transition to the insulator phase, the critical-like features get enhanced compared to the transition back to the metal phase. These experimental findings suggest that the metastable phase in the cooling branch of hysteresis has approached close to the spinodal instability. On the other hand, the extended disorder, generated over and above the intrinsic crystal defects during heating, triggers the excess heterogeneous nucleation before reaching the spinodal point. Zero temperature random field Ising model (ZTRFIM) simulation, inscribed for the athermal martensitic transitions, support the argument that the disorder smears the spinodal instabilities as the correlation length is bounded by the average distance between the disorder points.
arXiv comment12 pages, 16 figures
References in corpus (41)
- Hysteresis and hierarchies: dynamics of disorder-driven first-order phase transformations
- Exchange bias effect in alloys and compounds
- Avalanches, Barkhausen Noise, and Plain Old Criticality
- A random critical point separates brittle and ductile yielding transitions in amorphous materials
- Statistics of Earthquakes in Simple Models of Heterogeneous Faults
- First-Order Transition in the Breakdown of Disordered Media
- Crises and collective socio-economic phenomena: simple models and challenges
- Thermal/Electronic Transport Properties and Two-Phase Mixtures in La_{5/8-x}Pr_{x}Ca_{3/8}MnO_{3}
- From damage percolation to crack nucleation through finite size criticality
- Driving rate dependence of avalanche statistics and shapes at the yielding transition
- Multiple Avalanches Across the Metal-Insulator Transition of Vanadium Oxide Nano-scaled Junctions
- Avalanches in Breakdown and Fracture Processes
- Universality in the three-dimensional random-field Ising model
- Shear bands as manifestation of a criticality in yielding amorphous solids
- Three-Dimensional Elastic Compatibility: Twinning in Martensites
- On the athermal character of structural phase transitions
- Homogeneous and heterogeneous nucleation of Lennard-Jones liquids
- Viscoelastic Effects in Avalanche Dynamics: A Key to Earthquake Statistics
- Driving rate effects in avalanche-mediated, first-order phase transitions
- Fracturing highly disordered materials
- Spinodals with Disorder: from Avalanches in Random Magnets to Glassy Dynamics
- Training-induced criticality in martensites
- Efficient numerical methods for the random-field Ising model: Finite-size scaling, reweighting extrapolation, and computation of response functions
- Mott metal-insulator transition on compressible lattices
- Dynamic off-equilibrium transition in systems slowly driven across thermal first-order phase transitions
- Critical Slowing Down at the Abrupt Mott Transition: When the First-Order Phase Transition Becomes Zeroth-Order and Looks Like Second-Order
- Kinetic Spinodal Instabilities in the Mott Transition in V2O3: Evidence from Hysteresis Scaling and Dissipative Phase Ordering
- Slow Dynamics in Hard Condensed Matter: A Case Study of the Phase Separating System NdNiO
- On spinodal points and Lee-Yang edge singularities
- Finite-dimensional vestige of spinodal criticality above the dynamical glass transition
- Influence of the driving mechanism on the response of systems with athermal dynamics: the example of the random-field Ising model
- Universality of Pattern Formation
- Origin of scale-free intermittency in structural first-order phase transitions
- The fate of the bootstrap percolation hybrid critical point in finite dimension
- Heterogeneous Nucleation in the Low Barrier Regime
- Random Field Potts model with dipolar-like interactions: hysteresis, avalanches and microstructure
- Zeros of the Partition Function and Pseudospinodals in Long-Range Ising Models
- Particle pinning suppresses spinodal criticality in the shear banding instability
- Hysteresis in the Ising model with Glauber dynamics
- Scaling behavior of Charge order melting in Magnetic field-Pressure-Temperature space of 2.5% Al doped PrCaMnO
- Absolute calibration of the latent heat of transition using differential thermal analysis