150% magnetoresistance in sputtered Fe/Cr(100) superlattices

Journal Article · Mon Sep 20 04:00:00 EDT 1993 · Applied Physics Letters; (United States)

DOI:https://doi.org/10.1063/1.110689· OSTI ID:6303654

Fullerton, E E; Conover, M J; Mattson, J E; Sowers, C H; Bader, S D ^[1]

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1. Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)

We report the [ital epitaxial] growth of Fe/Cr(100) superlattices onto MgO(100) single-crystal substrates by magnetron sputtering. Superlattices that are epitaxially oriented within 1[degree] both in-plane and out-of-plane with the MgO substrate are achieved by initial growth of a Cr base layer at high temperature. Multiple superlattice diffraction peaks are observed in the low- and high-angle x-ray diffraction spectra. Three peaks are observed in the magnetoresistance associated with the oscillatory antiferromagnetic interlayer magnetic coupling as a function of Cr thickness. A maximum magnetoresistance of 150% at 4.2 K (28% at room temperature) is observed for a Cr(100 A)/[Fe(14 A)/Cr(8 A)][sub 50] superlattice.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 6303654
• Journal Information: Applied Physics Letters; (United States), Journal Name: Applied Physics Letters; (United States) Vol. 63:12; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360101* -- Metals & Alloys-- Preparation & Fabrication
360104 -- Metals & Alloys-- Physical Properties
ANTIFERROMAGNETISM
CHROMIUM
COHERENT SCATTERING
DIFFRACTION
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRON TUBES
ELECTRONIC EQUIPMENT
ELEMENTS
EPITAXY
EQUIPMENT
IRON
MAGNETISM
MAGNETORESISTANCE
MAGNETRONS
METALS
MICROWAVE EQUIPMENT
MICROWAVE TUBES
OSCILLATIONS
PHYSICAL PROPERTIES
SCATTERING
SPUTTERING
SUPERLATTICES
TRANSITION ELEMENTS
X-RAY DIFFRACTION