Microstructure and magnetic studies of magnetostrictive Terfecohan/YFeCo multilayers

Sputtered [Tb 0.4(Fe 0.55Co 0.45) 0.6/(Y 0.2Fe 0.63Co 0.17)] 40 multilayers were investigated by means of energy-dispersive X-ray spectroscopy, high-resolution transmission electron microscope and SQUID magnetometer measurements. The results show that the amorphous state exists in the whole as-depos...

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Bibliographic Details
Published inJournal of magnetism and magnetic materials Vol. 262; no. 3; pp. 361 - 367
Main Authors Huong Giang, D.T., Duc, N.H., Richomme, F., Schulze, S.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.06.2003
Subjects
Field-induced magnetic phase transition
Magnetic coercivity
Microstructure
Non-collinear magnetic structure
Magnetic coercivity
81.07.Bc
75.70.Cn
Field-induced magnetic phase transition
75.60.Jk
Microstructure
Non-collinear magnetic structure
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Summary:Sputtered [Tb 0.4(Fe 0.55Co 0.45) 0.6/(Y 0.2Fe 0.63Co 0.17)] 40 multilayers were investigated by means of energy-dispersive X-ray spectroscopy, high-resolution transmission electron microscope and SQUID magnetometer measurements. The results show that the amorphous state exists in the whole as-deposited sample. For the sample annealed at 350°C, the amorphous state still remains in the TbFeCo layers, whereas a fine grain (7–10 nm size) structure was formed in the YFeCo ones. Magnetisation analysis indicates the existence of a non-collinear magnetic structure and a field-induced magnetic phase transition, in which the TbFeCo magnetisation tends to rotate along the YFeCo magnetisation direction. The magnetic coercivity is discussed in terms of the magnetoelastic interactions.
ISSN:0304-8853
DOI:10.1016/S0304-8853(03)00063-5