Magnetic ordering and phase transition in MnO embedded in a porous glass

We present the results of a neutron diffraction study of the antiferromagnet MnO embedded in a porous glass. The type of magnetic ordering and the structural distortion are similar to those of the bulk, but the ordered magnetic moment of 3.84(4)muB/ion is strongly reduced and the Néel temperature is...

Full description

Saved in:
Bibliographic Details
Published in:Physical review letters 2001-06, Vol.86 (25), p.5783-5786
Main Authors: Golosovsky, I V, Mirebeau, I, André, G, Kurdyukov, D A, Kumzerov, Y A, Vakhrushev, S B
Format: Article
Language:English
Subjects:
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
GLASS
MAGNETIC MOMENTS
NEEL TEMPERATURE
NEUTRON DIFFRACTION
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:We present the results of a neutron diffraction study of the antiferromagnet MnO embedded in a porous glass. The type of magnetic ordering and the structural distortion are similar to those of the bulk, but the ordered magnetic moment of 3.84(4)muB/ion is strongly reduced and the Néel temperature is enhanced. The magnetic transition is second order, in contrast to the first order transition of the bulk. The size of the magnetic region is smaller than the average size of the nanoparticles. The reasons for this behavior are discussed.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.86.5783