Magnetoresistivity and oscillatory interlayer magnetic coupling of sputtered Fe/Nb superlattices

Journal Article · Mon May 25 00:00:00 EDT 1992 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.68.3252· OSTI ID:7294846

Mattson, J E; Sowers, C H; Berger, A; Bader, S D ^[1]

---

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

Sputtered Fe(20 A)/Nb superlattices were prepared with Nb thicknesses ranging from {similar to}2 to 40 A, and oscillatory interlayer magnetic coupling was observed by means of magnetoresistance (MR), magnetometry, and Kerr rotation measurements. As many as five oscillations between ferromagnetic and antiferromagnetic coupling were observed at room temperature with a Nb periodicity of {similar to}9 A. The largest negative MR measured, however, was only 0.3%. The low MR values of high resistivity (60--120 {mu}{Omega} cm) suggest that the structural disorder associated with the lattice mismatch (13% in this system) plays an important role in governing the transport phenomenon.

• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 7294846
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 68:21; ISSN PRLTA; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
DIELECTRIC PROPERTIES
DIMENSIONS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELEMENTS
HYSTERESIS
IRON
KERR EFFECT
MAGNETIZATION
MAGNETORESISTANCE
METALS
NIOBIUM
OSCILLATIONS
PHYSICAL PROPERTIES
SUPERLATTICES
TEMPERATURE RANGE
TEMPERATURE RANGE 0273-0400 K
THICKNESS
TRANSITION ELEMENTS