The physical significance of imaginary phonon modes in crystals

I Pallikara, P Kayastha, JM Skelton… - Electronic …, 2022 - iopscience.iop.org
The lattice vibrations (phonon modes) of crystals underpin a large number of material
properties. The harmonic phonon spectrum of a solid is the simplest description of its …

Computational thermodynamics and its applications

ZK Liu - Acta Materialia, 2020 - Elsevier
Thermodynamics is a science concerning the state of a system, whether it is stable,
metastable or unstable, when interacting with the surroundings. In this overview …

Giant Pressure‐Induced Spectral Shift in Cyan‐Emitting Eu2+‐Activated Sr8Si4O12Cl8 Microspheres for Ultrasensitive Visual Manometry

T Zheng, M Runowski, J Xue, L Luo… - Advanced Functional …, 2023 - Wiley Online Library
To address the unsatisfactory pressure sensitivity of luminescent manometers, Eu2+‐
activated supersensitive microspheres operating in the visible range are developed. A …

Necessary and sufficient elastic stability conditions in various crystal systems

F Mouhat, FX Coudert - Physical review B, 2014 - APS
While the Born elastic stability criteria are well known for cubic crystals, there is some
confusion in the literature about the form they should take for lower-symmetry crystal …

Elastic strain-induced amorphization in high-entropy alloys

Y Bu, Y Wu, Z Lei, X Yuan, L Liu, P Wang, X Liu… - Nature …, 2024 - nature.com
Elastic stability is the basis for understanding structural responses to external stimuli in
crystalline solids, including melting, incipient plasticity and fracture. In this work, elastic …

Elastic stability criteria of seven crystal systems and their application under pressure: Taking carbon as an example

J Gao, QJ Liu, B Tang - Journal of Applied Physics, 2023 - pubs.aip.org
Elastic stability criteria are widely employed to prove the being of the lattice. Sin'ko and
Smirnov have reported the applicable criteria under isotropic pressure and given the …

Strong anisotropy and magnetostriction in the two-dimensional Stoner ferromagnet

HL Zhuang, PRC Kent, RG Hennig - Physical Review B, 2016 - APS
Computationally characterizing magnetic properies of novel two-dimensional (2D) materials
serves as an important first step of exploring possible applications. Using density-functional …

Synergistically improved dam**, elastic modulus and mechanical properties of rolled Mg-8Li-4Y–2Er-2Zn-0.6 Zr alloy with twins and long-period stacking ordered …

D Wang, S Liu, R Wu, S Zhang, Y Wang, H Wu… - Journal of Alloys and …, 2021 - Elsevier
Abstract Mg-8Li-4Y–2Er-2Zn-0.6 Zr alloy with high dam**, elastic modulus and
mechanical properties was prepared by heat treatment and cold rolling. 18R-type long …

Temperature dependent effective potential method for accurate free energy calculations of solids

O Hellman, P Steneteg, IA Abrikosov, SI Simak - Physical Review B …, 2013 - APS
We have developed a thorough and accurate method of determining anharmonic free
energies, the temperature dependent effective potential technique (TDEP). It is based on ab …

Anharmonic free energies and phonon dispersions from the stochastic self-consistent harmonic approximation: Application to platinum and palladium hydrides

I Errea, M Calandra, F Mauri - Physical Review B, 2014 - APS
Harmonic calculations based on density-functional theory are generally the method of
choice for the description of phonon spectra of metals and insulators. The inclusion of …