High energy products in rapidly annealed nanoscale Fe/Pt multilayers

Journal Article · Wed Dec 31 23:00:00 EST 1997 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.120793· OSTI ID:573868

Liu, J P; Luo, C P ^[1]; Liu, Y ^[2]; Sellmyer, D J ^[1]

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1. Center for Materials Research and Analysis and Behlen Laboratory of Physics, University of Nebraska, Lincoln, Nebraska 68588 (United States)
2. Center for Materials Research and Analysis and Department of Mechanical Engineering, University of Nebraska, Lincoln, Nebraska 68588 (United States)

Magnetic properties of nanocomposite Fe{endash}Pt films with Fe concentration higher than 50 at{percent} have been investigated in this study. Fe/Pt multilayers were produced by sputtering and magnetic hardening was observed after heat treatment including rapid annealing. The final nanocomposite films consisted of the hard face-centered tetragonal FePt phase and a soft face-centered-cubic phase. The maximum energy products of the optimally processed samples exceeded 40 MGOe. Evidence for exchange coupling of the hard and soft phases was found. {copyright} {ital 1998 American Institute of Physics.}

• OSTI ID: 573868
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 4 Vol. 72; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COERCIVE FORCE
EXCHANGE INTERACTIONS
FERROMAGNETIC MATERIALS
HARDENING
HEAT TREATMENTS
IRON
LAYERS
MAGNETIZATION
PERMANENT MAGNETS
PLATINUM