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

Battle, P.D. and Blundell, S.J. and Green, M.A. and Hayes, W. and Honold, M. and Klehe, A.K. and Laskey, N.S. and Millburn, J.E. and Murphy, L. and Rosseinsky, M.J. and Samarin, N.A. and Singleton, J. and Sluchanko, N.E. and Sullivan, S.P. and Vente, J.F. (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:https://doi.org/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
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: 26 Oct 2015 16:53 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/51163 (The current URI for this page, for reference purposes)
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