Photo- and thermal-induced antiferromagnetic interlayer coupling in Fe/(Fe-Si) superlattices

Conference · Sun Aug 01 00:00:00 EDT 1993

OSTI ID:10191660

Mattson, J E; Fullerton, E E; Kumar, S; Lee, S R; Sowers, C H; Grimsditch, M; Bader, S D ^[1]; Parker, F T ^[2]

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1. Argonne National Lab., IL (United States)
2. California Univ., San Diego, La Jolla, CA (United States). Center for Magnetic Recording Research

We have grown via sputtering, Fe - iron silicide superlattices that exhibit novel thermal and photomagnetic effects. For {approximately}15 {Angstrom} nominal thickness of the silicide layer the superlattices are antiferromagnetically (AF) coupled at room temperature. Upon cooling below 100K, they gradually revert to ferromagnetic alignment, but the AF coupling is restored at low temperature by exposure to visible light off sufficient intensity (> 10 mW/mm{sup 2}). These effects are due to charge carriers in the silicide spacer layer which, when thermally or photo-generated, are capable of communicating spin information between the Fe layers.

• Research Organization: Argonne National Lab., IL (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States); National Science Foundation, Washington, DC (United States)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 10191660
• Report Number(s): ANL/MSD/CP-80646; CONF-9308175-1; ON: DE93040822; CNN: Contract DMR-90-10908
• Resource Relation: Conference: Latin American workshop on magnetism,Guanujuato (Mexico),23-28 Aug 1993; Other Information: PBD: Aug 1993
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
IRON
SUPERLATTICES
IRON SILICIDES
ANTIFERROMAGNETISM
COUPLING
360104
PHYSICAL PROPERTIES