skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Epitaxial Fe{sub 3}Pt/FePt nanocomposites on MgO and SrTiO{sub 3}

Abstract

We have exploited the pseudomorphic growth of the magnetically soft Fe{sub 3}Pt phase on top of L1{sub 0}-FePt to obtain fully epitaxial soft/hard nanocomposites on both MgO(100) and SrTiO{sub 3}(100). The magnetic properties of this new nanocomposite system, driven by the soft/hard exchange-coupling, can be tailored by varying soft phase thickness, soft phase magnetic anisotropy and substrate. Coercivity is strongly reduced by the addition of the soft phase, a reduction which is definitely affected by the nominal composition of the soft phase and by the substrate choice; similarly is the magnetic phase diagram of the composite system. Coercive field decreases down to 21% of the hard layer value for Fe{sub 3}Pt(5 nm)/FePt(3.55 nm) nanocomposites on SrTiO{sub 3}; this maximum coercivity reduction was obtained with a nominal atomic content of Fe in the soft phase of 80%.

Authors:
; ; ; ; ; ;  [1];  [2]
  1. IMEM-CNR, Parco Area delle Scienze 37/A, Parma, I-43124 (Italy)
  2. Information Storage Materials Laboratory, Department of Electrical and Computer Engineering, National University of Singapore, Singapore 117576 (Singapore)
Publication Date:
OSTI Identifier:
22413158
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 117; Journal Issue: 8; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ANISOTROPY; COERCIVE FORCE; COUPLING; CRYSTAL STRUCTURE; EPITAXY; INTERMETALLIC COMPOUNDS; IRON; LAYERS; MAGNESIUM OXIDES; MAGNETIC PROPERTIES; NANOCOMPOSITES; PHASE DIAGRAMS; PLATINUM; STRONTIUM TITANATES; SUBSTRATES

Citation Formats

Casoli, F., E-mail: casoli@imem.cnr.it, Nasi, L., Cabassi, R., Fabbrici, S., Bolzoni, F., Ranzieri, P., Albertini, F., and Lupo, P. Epitaxial Fe{sub 3}Pt/FePt nanocomposites on MgO and SrTiO{sub 3}. United States: N. p., 2015. Web. doi:10.1063/1.4913292.
Casoli, F., E-mail: casoli@imem.cnr.it, Nasi, L., Cabassi, R., Fabbrici, S., Bolzoni, F., Ranzieri, P., Albertini, F., & Lupo, P. Epitaxial Fe{sub 3}Pt/FePt nanocomposites on MgO and SrTiO{sub 3}. United States. doi:10.1063/1.4913292.
Casoli, F., E-mail: casoli@imem.cnr.it, Nasi, L., Cabassi, R., Fabbrici, S., Bolzoni, F., Ranzieri, P., Albertini, F., and Lupo, P. Sat . "Epitaxial Fe{sub 3}Pt/FePt nanocomposites on MgO and SrTiO{sub 3}". United States. doi:10.1063/1.4913292.
@article{osti_22413158,
title = {Epitaxial Fe{sub 3}Pt/FePt nanocomposites on MgO and SrTiO{sub 3}},
author = {Casoli, F., E-mail: casoli@imem.cnr.it and Nasi, L. and Cabassi, R. and Fabbrici, S. and Bolzoni, F. and Ranzieri, P. and Albertini, F. and Lupo, P.},
abstractNote = {We have exploited the pseudomorphic growth of the magnetically soft Fe{sub 3}Pt phase on top of L1{sub 0}-FePt to obtain fully epitaxial soft/hard nanocomposites on both MgO(100) and SrTiO{sub 3}(100). The magnetic properties of this new nanocomposite system, driven by the soft/hard exchange-coupling, can be tailored by varying soft phase thickness, soft phase magnetic anisotropy and substrate. Coercivity is strongly reduced by the addition of the soft phase, a reduction which is definitely affected by the nominal composition of the soft phase and by the substrate choice; similarly is the magnetic phase diagram of the composite system. Coercive field decreases down to 21% of the hard layer value for Fe{sub 3}Pt(5 nm)/FePt(3.55 nm) nanocomposites on SrTiO{sub 3}; this maximum coercivity reduction was obtained with a nominal atomic content of Fe in the soft phase of 80%.},
doi = {10.1063/1.4913292},
journal = {Journal of Applied Physics},
number = 8,
volume = 117,
place = {United States},
year = {Sat Feb 28 00:00:00 EST 2015},
month = {Sat Feb 28 00:00:00 EST 2015}
}