Combining large magnetostriction and large magnetostrictive susceptibility in TbFeCo/Y{sub x}Fe{sub 1-x} exchange-spring-type multilayers
- Faculty of Physics, Vietnam National University, Hanoi 334 Nguyen Trai, Thanh Xuan, Hanoi (Viet Nam)
An approach to obtain both large magnetostriction and large magnetostrictive susceptibility is developed. It is applied to sputtered {l_brace}Tb(Fe{sub 0.55}Co{sub 0.45}){sub 1.5}/(Y{sub x}Fe{sub 1-x}){r_brace} (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 Y{sub x}Fe{sub 1-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 Y{sub 0.1}Fe{sub 0.9} layers. A parallel magnetostrictive susceptibility {chi}{sub {lambda}}{sub parallel} as large as 29.4x10{sup -2} T{sup -1}, which is almost half of that (79.6x10{sup -2} T{sup -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.
- OSTI ID:
- 20632762
- Journal Information:
- Applied Physics Letters, Vol. 85, Issue 9; Other Information: DOI: 10.1063/1.1787156; (c) 2004 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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