TITLE

Combining large magnetostriction and large magnetostrictive susceptibility in TbFeCo/YxFe1-x exchange-spring-type multilayers

AUTHOR(S)
Giang, D. T. Huong; Duc, N. H.; Thuc, V. N.; Vu, L. V.; Chau, N.
PUB. DATE
August 2004
SOURCE
Applied Physics Letters;8/30/2004, Vol. 85 Issue 9, p1565
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
An approach to obtain both large magnetostriction and large magnetostrictive susceptibility is developed. It is applied to sputtered {Tb(Fe0.55Co0.45)1.5/(YxFe1-x)} (x=0, 0.1 and 0.2) multilayers. In the as-deposited samples, the TbFeCo layers are in the amorphous state, but the microstructure of the YxFe1-x layers is not the same: A crystalline state is observed in pure Fe layers (x=0), whereas body-centered-cubic-Fe nanocrystals coexist within an YFe amorphous matrix in Y0.1Fe0.9 layers. A parallel magnetostrictive susceptibility χλ∥ as large as 29.4×10-2 T-1, which is almost half of that (79.6×10-2 T-1) of the Metglas 2605SC was obtained for x=0.1. This is attributed to the exchange coupling between sandwiched TbFeCo layers and nanostructured YFe layers.
ACCESSION #
14258792

 

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