Structural and magnetic disorder in GMR materials

The conduction properties of the ‘giant’ magnetoresistance (GMR) material La 1− x Sr x MnO 3, are believed to be related to local lattice distortions but almost all recent diffraction work on this and related materials concentrates on the ‘time-average’ crystal and magnetic structures which are dete...

Full description

Saved in:
Bibliographic Details
Published in:Physica. B, Condensed matter Condensed matter, 1997-06, Vol.234, p.713-714
Main Authors: Mellergård, A, McGreevy, R.L
Format: Article
Language:English
Subjects:
Computer modelling
Diffuse scattering
Magnetoresistance
Perovskite compounds
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The conduction properties of the ‘giant’ magnetoresistance (GMR) material La 1− x Sr x MnO 3, are believed to be related to local lattice distortions but almost all recent diffraction work on this and related materials concentrates on the ‘time-average’ crystal and magnetic structures which are determined by Bragg scattering, and there has as yet been no microscopic picture of the local disorder. We have measured total structure factors, including both Bragg and diffuse scattering, of some perovskite materials by powder neutron diffraction allowing the lattice disorder to be modelled by reverse Monte Carlo (RMC) methods.
ISSN:0921-4526
1873-2135
DOI:10.1016/S0921-4526(96)01116-7