14 citations · 75 across the 10 of their papers we have counts for
9 papers · 1 filter
First-principles calculation of electronic density of states and Seebeck coefficient in transition-metal-doped Si-Ge alloys
Ryo Yamada, Akira Masago, Tetsuya Fukushima +3
High value and large Seebeck coefficient have been reported in the nanostructured Fe-doped Si-Ge alloys. In this work, the large Seebeck coefficient in Fe-doped Si-Ge systems…
Origin of the Phase Separation into B2 and L21 Ordered Phases in the X-Al-Ti (X: Fe, Co, and Ni) Alloys from the First-principles Cluster Variation Method
Ryo Yamada, Tetsuo Mohri
The phase separation behaviors from the single B2 ordered phase into the two separate B2 and L2 ordered phases in the X-Al-Ti (X: Fe, Co, and Ni) alloys are analyzed using the…
Application of Cluster Variation and Path Probability Methods to the Tetragonal-Cubic Phase Transition in ZrO2
Ryo Yamada, Tetsuo Mohri
Cluster variation method (CVM) and path probability method (PPM) have generally been employed to study replacive phase transitions in alloy systems. Recently, displacive phase tran…
Atomistic Relaxation Process in a Ni3Al Ordered Phase Using Path Probability Method with Vacancy Mechanisms
Ryo Yamada, Tetsuo Mohri
The path probability method (PPM), which is a natural extension of the cluster variation method (CVM) to a time domain, has been employed in a relaxation process of atomic configur…
Conversion of magnetic freedoms into atomic configurational freedoms within the Cluster Variation Method
Ryo Yamada, Tetsuo Mohri
The continuous displacement cluster variation method (CDCVM) has introduced local atomic displacements into the theoretical framework of the cluster variation method (CVM) by viewi…
Steepest-Entropy-Ascent Quantum Thermodynamics Models in Materials Science
Ryo Yamada, Michael R. von Spakovsky, William T. Reynolds
Steepest-entropy-ascent quantum thermodynamics, or SEAQT, is a unified approach of quantum mechanics and thermodynamics that avoids many of the inconsistencies that can arise betwe…
Kinetic Pathways of Phase Decomposition Using Steepest-Entropy-Ascent Quantum Thermodynamics Modeling. Part II: Phase Separation and Ordering
Ryo Yamada, Michael R. von Spakovsky, William T. Reynolds
The kinetics of ordering and concurrent ordering and clustering is analyzed with an equation of motion initially developed to account for dissipative processes in quantum systems.…
Low-temperature Atomistic Spin Relaxation and Non-equilibrium Intensive Properties Using Steepest-Entropy-Ascent Quantum-Inspired Thermodynamics Modeling
Ryo Yamada, Michael R. von Spakovsky, William T. Reynolds
The magnetization of body-centered cubic iron at low temperatures is calculated with the steepest-entropy-ascent quantum thermodynamics (SEAQT) framework. This framework assumes th…
A Method for Predicting Nonequilibrium Thermal Expansion Using Steepest-Entropy-Ascent Quantum Thermodynamics
Ryo Yamada, Michael R. von Spakovsky, William T. Reynolds
Steepest-entropy-ascent quantum thermodynamics (SEAQT) is an intriguing approach that describes equilibrium and dynamic processes in a self-consistent way. The applicability is lim…