MAGNETIC PERFORMANCE TRANSITION IN Fe/Tb MULTILAYERS INDUCED BY INTERFACE ROUGHNESS

金属学报(英文版), 2001, 14(6): 532-538.

^1, , ^2, , ^3,

1.Laboratory of Advanced Materials, Department of Materials Science and Engineering, Tsinghua University,Beijing 100084, China

2.Laboratory of Advanced Materials, Department of Materials Science and Engineering, Tsinghua University,Beijing 100084, China

3.Laboratory of Advanced Materials, Department of Materials Science and Engineering, Tsinghua University,Beijing 100084, China

MAGNETIC PERFORMANCE TRANSITION IN Fe/Tb MULTILAYERS INDUCED BY INTERFACE ROUGHNESS

Keywords： magnetic multilayer

Fe/Tb multilayers with various Fe layer thickness and fixed Tb layer thickness wereprepared by e-beam alternate vapor deposition. Analyses of the microstructure of thesefilms show that the magnetic performance is strongly affected by the interface struc-ture. Fe in the films evolved to amorphous phase and the Fe/Tb interface becameindiscernible with decreasing Fe thickness. At the same time, the film was observedto perform superparamagnetically, which is quite different from the ferromagnetic be-havior of Fe/Tb multilayers that have sharp Fe/Tb interface. Our work shows thatthe interface roughness has strong influence to the properties of magnetic multilayers.

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MAGNETIC PERFORMANCE TRANSITION IN Fe/Tb MULTILAYERS INDUCED BY INTERFACE ROUGHNESS

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