Texture and Electromagnetic Coupling Properties. Issue 4 (29th November 2017)

• Record Type: Journal Article
• Authors: Fuentes‐Cobas, Luis Edmundo; Grijalva‐Castillo, María Cristina; Fuentes‐Montero, Luis; Matutes‐Aquino, José Andrés; Méndez‐Nonell, Juan
• Other Names: Gandarilla Francisco Cruz guestEditor.; Bolmaro Raúl guestEditor.; Esling Claude guestEditor.; Wright Stuart guestEditor.
• Is Part Of: Advanced engineering materials. Volume 20:Issue 4(2018)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2017-11-29
• Subjects: galfenol magnetostriction -- polycrystal magnetic symmetry -- texture‐properties relationship; Materials -- Periodicals; 620.11
• DOI: 10.1002/adem.201700827
• Languages: English
• ISSNs: 1438-1656

Abstract

Abstract : The estimation of physical properties in textured polycrystals is reviewed. "Principal" properties, which relate actions and responses within the same subsystem (electric, elastic, …), as well as "coupling" properties (e.g., piezomagnetism), linking actions, and responses associated with various subsystems (magneto‐elastic, thermo‐electric, …) are analyzed. Tensor ranks from 1 to 4, with polar and axial characteristics are considered. Virtual‐time inversion (the case of magnetoelectricity) is taken into account. Matrix and surface representations are considered. Significant differences in the effect of texture on properties arise from the diversity of properties tensors ranks and polar/axial natures. To predict the effective values of coupling properties, precautions required for application of the Voigt, Reuss, and Hill approximations are pointed out. At all stages of the proposed methodology, a symmetrized spherical harmonics treatment of the orientation distribution functions, the inverse pole figures and (single‐ and polycrystals) physical properties is applied. For the case of magnetostriction, a functional program for estimating polycrystal performance is included as Supporting Information. The input data are the single‐crystal property coefficients and the polycrystal inverse pole figure parameters. The coincidence of predicted magnetostriction coefficients with experimentally measured values is satisfactory. Recently established considerations regarding the characterization of coupling properties in complex materials are divulged. Abstract : Crystallographic texture plays an important role in materials' performance. In this article, the authors review the diversity of texture ↔ properties relationships found in functional materials. Several coupling interactions are analyzed. The figure shows the case of galfenol magnetostriction as a function of axial texture.