Bulk and Interfacial Effects in Co–Cr<SUB>2</SUB>O<SUB>3</SUB> Nanocomposites

Nasir, M. Farooq and Hng, Huey Hoon and O'Grady, K. and Manzoor, Sadia (2011) Bulk and Interfacial Effects in Co–Cr<SUB>2</SUB>O<SUB>3</SUB> Nanocomposites. Journal of Nanoscience and Nanotechnology, 11 (3). pp. 2700-2703. ISSN 15334880

Text (Research article) 1. Bulk and Interfacial effects in Co-Cr2O3 nanocomposites.pdf - Published Version Download (532kB)

Abstract

The exchange bias field has been measured in a set of Co–Cr2O3 nanocomposites in order to distinguish
between the bulk and interfacial contributions to Hex. The studies were carried out on a set
of samples prepared by the sol gel technique in which the Co concentration was varied between 30
and 80 wt%. The particle sizes in all samples were carefully controlled so as to enable a comparison
of their magnetic properties. Using thermal activation measurements we are able to distinguish
between contributions to Hex arising from the thermal stability of the antiferromagnetic particles
(bulk behaviour) and that due to changing interface density with increasing Co concentration. We
have interpreted our results in terms of the independent particle volume model.

Item Type:	Article
Subjects:	Q Science > QC Physics
Divisions:	Faculty of Engineering and Applied Sciences (FEAS) > Department of Basic Sciences Islamabad
Depositing User:	Dr. M. Farooq Nasir
Date Deposited:	01 Feb 2021 06:35
Last Modified:	01 Feb 2021 06:35
URI:	http://research.riphah.edu.pk/id/eprint/1202

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