About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
|
Computational Thermodynamics and Kinetics
|
Presentation Title |
Phase Field Modeling and Simulation Study of Multiferroic Magnetoelectric Composite Materials |
Author(s) |
Yongmei M. Jin, Liwei D. Geng, Yu U. Wang |
On-Site Speaker (Planned) |
Yongmei M. Jin |
Abstract Scope |
Multiferroic magnetoelectric composites composed of magnetostrictive and piezoelectric materials offer unique properties and functionalities that cannot be obtained in individual constituent materials, thus enabling development of new devices and technology. Phase field model is developed to perform computational study of strain-mediated domain-level magnetization-polarization coupling mechanisms in the composites. Phase morphology, grain microstructure, internal stress distribution, and magnetization and polarization domain processes are simulated. The interplays among magnetocrystalline anisotropy, stress-induced anisotropy, and internal residual bias stress are studied in quantitative details. Various magnetostrictive constituents (Metglas, Terfenol-D, ferrite) are considered for their distinct properties: amorphous Metglas with very weak material magnetic anisotropy and small magnetostriction, polycrystalline Terfenol-D with strong magnetocrystalline anisotropy and large magnetostriction, and ferrite in between. Examples of magnetoelectric coefficient and voltage-tunable magnetic susceptibility are presented for sensor and tunable inductor applications. |
Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |