A critical discussion of calculated modulated structures, Fermi surface nesting and phonon softening in magnetic shape memory alloys Ni2Mn(Ga, Ge, Al) and Co2Mn(Ga, Ge)
A. T. Zayak, P. Entel
Abstract
A series of first principles calculations have been carried out in order to discuss electronic structure, phonon dynamics, structural instabilities and the nature of martensitic transformations of the Heusler alloys Ni2Mn(Ga, Ge, Al) and Co2Mn(Ga, Ge). The calculations show that besides electronic pecularities like Fermi--surface nesting, hybridizing optical and acoustic phonon modes are important for the stabilization of the modulated martensitic structures.
Create a lesson
Related papers
Longitudinal and Transverse Thermoelectric Properties in Topological Quantum Materials
Jyoti Duhan, Anil Kumar B. M., Satya N. Guin et al.
Thermally Conditioned Time-Series Forecasting of Grain Growth in Polycrystalline Materials
Eliane Younes, Elie Hachem, Marc Bernacki
Evolutionary Design of Interpretable Spatial Descriptors for Structure-Property Relationship Discovery
Aditya Raghavan, Sergei V Kalinin
Millikelvin magnetometry up to 30~T using a multi-cross micro-Hall sensor
Bingbing Tong, Yinina Ma, Zhenhua Zhao et al.
First-principles study of the formation of Group-IV--vacancy color centers in diamond
Xiangru Han, Adam Gali
Anomalous thermal transport in isotope-enriched germanium carbide
Wenjiang Zhou, Bai Song