Exchange Coupling and Remanence Enhancement in Nanocomposite Multilayer Magnets

Nanocomposite thin films (see Figure) that are prepared by sputtering and heat treatment demonstrate exchange coupling and remanence enhancement. A high remanence of Jr = 1.31 T and a maximum energy product of (B H)max = 203 kJ m–3 are achieved. These multilayer films consist of magnetically hard Nd...

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Bibliographic Details
Published in:Advanced materials (Weinheim) 2002-12, Vol.14 (24), p.1832-1834
Main Authors: Liu, W., Zhang, Z.-d., Liu, J.-p., Chen, L.-j., He, L.-l., Liu, Y., Sun, X.-k., Sellmyer, D.J.
Format: Article
Language:English
Subjects:
Exchange coupling
Magnets
Nanocomposites
nanostructured
Thin films
Thin films, nanostructured
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Summary:Nanocomposite thin films (see Figure) that are prepared by sputtering and heat treatment demonstrate exchange coupling and remanence enhancement. A high remanence of Jr = 1.31 T and a maximum energy product of (B H)max = 203 kJ m–3 are achieved. These multilayer films consist of magnetically hard Nd2Fe14B‐type phase with a grain size of 40 nm and soft α‐Fe phase, existing in the form of continuous layers.
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.200290012