Accession Number : ADP008045

Title :   Synchrotron Study of Roughness in Fe-Cr Multilayers,

Corporate Author : STANFORD UNIV CA STANFORD SYNCHROTRON RADIATION LAB

Personal Author(s) : Clemens, B.M. ; Payne, A.P. ; Brennan, S.

Report Date : 05 MAR 1992

Pagination or Media Count : 4

Abstract : Many advances in the characterization of roughness in artificially layered structures have grown out of interest in their x-ray optical properties. In the present work we apply these techniques to a different application of layered media: magnetic multilayers. Recent reports have shown that the antiferromagnetic order and giant magnetoresistance in layered magnetic materials are mediated by interface quality and roughness, and several reports claim layer roughness enhances giant magnetoresistance. The objective of the current work is to characterize interface roughness and correlate it to the magnetic properties in these materials. We have fabricated structurally distinct Fe/Cr layered structures and examined both the exchange coupling and electrical transport properties. We correlate this with quantitative measurements of the character and magnitude of the structural perturbations.

Descriptors :   *LAYERS, *ROUGHNESS, *SYNCHROTRONS, *IRON, *CHROMIUM, *X RAY SCATTERING, COUPLINGS, EXCHANGE, INTERFACES, MAGNETIC MATERIALS, MAGNETIC PROPERTIES, MAGNETORESISTANCE, MATERIALS, MEASUREMENT, MEDIA, OPTICAL PROPERTIES, PERTURBATIONS, QUALITY, STRUCTURES, TRANSPORT, TRANSPORT PROPERTIES, WORK, X RAYS, INTERFACES, ANTIFERROMAGNETISM, ELECTRICAL PROPERTIES, SURFACES.

Subject Categories : Particle Accelerators
      Properties of Metals and Alloys
      Optics
      Nuclear Physics & Elementary Particle Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE