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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

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

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Autor(es):
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]
Número total de Autores: 8
Afiliação do(s) autor(es):
[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
Número total de Afiliações: 3
Tipo de documento: Artigo Científico
Fonte: Journal of Applied Physics; v. 116, n. 11 SEP 21 2014.
Citações Web of Science: 0
Resumo

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)

Processo FAPESP: 08/04025-0 - Materiais multifuncionais multiferróicos nanoestruturados: síntese, propriedades, fenomenologia e aplicações
Beneficiário:José Antonio Eiras
Linha de fomento: Auxílio à Pesquisa - Temático