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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

High strain in polycrystalline Ni48.8Mn31.4Ga19.8 Heusler alloys under overlapped static and oscillating magnetic fields

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Author(s):
Montanher, D. Z. [1] ; Pereira, J. R. D. [1] ; Cotica, L. F. [1] ; Gotardo, R. A. M. [2] ; Viana, D. S. F. [3] ; Garcia, D. [3] ; Eiras, J. A. [3] ; Santos, I. A. [1]
Total Authors: 8
Affiliation:
[1] Univ Estadual Maringa, Dept Phys, BR-87020900 Maringa, Parana - Brazil
[2] Technol Fed Univ Parana, BR-86300000 Cornelio Procopio, PR - Brazil
[3] Univ Fed Sao Carlos, Dept Phys, BR-13565905 Sao Carlos, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Source: Journal of Applied Physics; v. 116, n. 11 SEP 21 2014.
Web of Science Citations: 0
Abstract

Martensitic polycrystalline Ni48.8Mn31.4Ga19.8 Heusler alloys, with a stacking period of 14 atomic planes at room temperature, were innovatively processed by combining high-energy ball milling and powder metallurgy. Bulk samples were mechanically coupled to a piezoelectric material in a parallel configuration, and the mechanical deformation of the studied system due to the twin's variant motion was investigated under overlapped static and oscillating magnetic fields. A reversible and high mechanical deformation is observed when the frequency of the oscillating magnetic field is tuned with the natural vibration frequency of this system. In this condition, a linear deformation as a function of the static magnetic field amplitude occurs in the +/- 4 kOe range, and a mechanical deformation of 2% at 10 kOe is observed. (C) 2014 AIP Publishing LLC. (AU)

FAPESP's process: 08/04025-0 - Nanostructured multifunctional multiferroic materials: synthesis, properties, phenomenology and applications
Grantee:José Antonio Eiras
Support type: Research Projects - Thematic Grants