| Texto completo | |
| Autor(es): |
Turtelli, R. Sato
[1]
;
Nunes, C. Bormio
[2]
;
Teixeira, L. C.
[2]
;
Groessinger, R.
[1]
;
Suzuki, P. A.
[2]
;
Barbatti, C.
[1]
Número total de Autores: 6
|
| Afiliação do(s) autor(es): | [1] Vienna Univ Technol, Inst F Festkorperphys, A-1040 Vienna - Austria
[2] Univ Sao Paulo, Escola Engn Lorena, BR-12602860 Lorena, SP - Brazil
Número total de Afiliações: 2
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Journal of Alloys and Compounds; v. 471, n. 1-2, p. 52-55, MAR 5 2009. |
| Citações Web of Science: | 8 |
| Resumo | |
The longitudinal and transverse magnetostriction and microstructure of polycrystalline Fe(100-x)Ge(x) (x= 8, 12, 15, 20) alloys were investigated in order to correlate the magnetostriction with microstructure. In order to obtain different microstructures in the Fe(100-x)Ge(x) alloys, the samples were annealed at 600 degrees C during 2 h and at 1150 degrees C for half hour and then quenched in cold water. For Ge concentrations lower than 14 at.%, the longitudinal magnetostriction is positive and increases positively up to 22 ppm at 12 at.% Ge then decreases and vanishes at about 14 at.% Ge. For further Ge concentration increase the longitudinal magnetostriction is negative and reaches -30 ppm for Fe(80)Ge(20). This behavior, that is very similar to that reported for Fe-Si alloys, is explained by the structural changes caused by different thermal histories of the alloys. (C) 2008 Published by Elsevier B. V. (AU) | |
| Processo FAPESP: | 04/09779-1 - Obtenção de ligas Fe1-xGex e caracterização de suas propriedades microestruturais e magnetostrictivas |
| Beneficiário: | Cristina Bormio Nunes |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |