Title:
Interface structures in FePt/Fe₃Pt hard-soft exchange-coupled magnetic nanocomposites
Interface structures in FePt/Fe₃Pt hard-soft exchange-coupled magnetic nanocomposites
Author(s)
Li, Jing
Wang, Z. L. (Zhong Lin)
Zeng, Hao
Sun, Shouheng
Liu, J. Ping
Wang, Z. L. (Zhong Lin)
Zeng, Hao
Sun, Shouheng
Liu, J. Ping
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Abstract
Self-assembly of FePt and Fe₃O₄ nanoparticles of different sizes led to various FePt–Fe₃O₄ nanocomposites. Annealing the composite under reducing atmosphere at 650 and 700 °C induced magnetically hard FePt phase and magnetically soft Fe₃Pt phase. The FePt and Fe₃Pt phases were either linked by a common interface or coexisted within one grain as domains with sizes <10 nm. This ensures the effective exchange coupling of magnetically hard and soft phases. High-resolution transmission electron microscopy studies provide detailed structural characterization for the FePt based nanocomposites.
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Date Issued
2003-05-26
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Article