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Colossal magnetoresistance in Sr2-xNd1+xMn2O7 (x = 0.0, 0.1)

Battle, P.D., Blundell, S.J., Green, M.A., Hayes, W., Honold, M., Klehe, A.K., Laskey, N.S., Millburn, J.E., Murphy, L., Rosseinsky, M.J., and others. (1996) Colossal magnetoresistance in Sr2-xNd1+xMn2O7 (x = 0.0, 0.1). Journal of Physics: Condensed Matter, 8 (32). L427-L434. ISSN 0953-8984. (doi:10.1088/0953-8984/8/32/001) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

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Official URL
http://dx.doi.org/10.1088/0953-8984/8/32/001

Abstract

Magnetization and magnetotransport measurements have been used to study the composition dependence of the electronic properties of the Ruddlesden-Popper phases Sr2NdMn2O7 and Sr1.9Nd1.1Mn2O7. Although their behaviour differs in detail, both compounds show a colossal magnetoresistance (CMR) effect (>10 000% in 14 T) in the temperature range 4.2 ? T/K ? 100. However, neither material shows a transition to a ferromagnetic state above 4.2 K, and both materials have higher resistivities (>103 ? cm for 4.2 ? T/K ? 100) than the metallic oxides previously found to show CMR. In view of the low conductivity and the absence of ferromagnetism, the CMR of these phases is not readily explained by a doubleexchange mechanism.

Item Type: Article
DOI/Identification number: 10.1088/0953-8984/8/32/001
Additional information: Unmapped bibliographic data: LA - English [Field not mapped to EPrints] J2 - J Phys Condens Matter [Field not mapped to EPrints] AD - Inorganic Chemistry Laboratory, Oxford University, South Parks Road, Oxford OX1 3QR, United Kingdom [Field not mapped to EPrints] AD - Department of Physics, Clarendon Laboratory, Oxford University, Parks Road, Oxford OX1 3PU, United Kingdom [Field not mapped to EPrints] DB - Scopus [Field not mapped to EPrints]
Subjects: Q Science > QC Physics > QC173.45 Condensed Matter
Q Science > QD Chemistry > QD478 Solid State Chemistry
Divisions: Faculties > Sciences > School of Physical Sciences > Functional Materials Group
Depositing User: Giles Tarver
Date Deposited: 21 Oct 2015 11:31 UTC
Last Modified: 29 May 2019 16:11 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/51163 (The current URI for this page, for reference purposes)
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