Regensburg 2022 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 32: Bulk Materials: Soft and Hard Permanent Magnets

MA 32.8: Vortrag

Donnerstag, 8. September 2022, 16:45–17:00, H43

MAELAS: MAgneto-ELAStic properties calculation via computational high-throughput approach — Pablo Nieves¹, Sergiu Arapan¹, Shihao Zhang², Andrzej Kadzielawa¹, Ruifeng Zhang², and •Dominik Legut¹ — ¹IT4Innovations, VSB-TU Ostrava, Ostrava, Czech Republic — ²School of Mat. Sci. and Eng., Beihang University, Beijing, China

Magnetostriction is a physical phenomenon in which the process of magnetization induces a change in the shape or dimension of a magnetic material. Nowadays, materials with large magnetostriction are used in many electromagnetic microdevices as actuators and sensors. By contrast, magnetic materials with extremely low magnetostriction are required in applications such as electric transformers. In this work, we present the program MAELAS[1,2] to calculate anisotropic magnetostriction coefficients and magnetoelastic constants in an automated way by quantum-mechanical calculations. The behavior of the magnetocrystalline anisotropy energy and magnetostrictive coefficients under a general external magnetic field could be visualized as a relative length change using our MAELASviewer tool[3]. To verify accuracy and our approach in general we present a number of examples of each crystal symmetry class with calculated magnetostriction and magnetoelastic constants and compare them with recorded data.
References:[1-3] www.md-esg.eu/software and references therein