UNSPECIFIED (1998) Colossal magnetoresistance in Gd1/2Sr1/2MnO3. JOURNAL OF APPLIED PHYSICS, 83 (12). pp. 7664-7667. ISSN 0021-8979

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Abstract

Colossal magnetoresistance has been observed in polycrystalline Gd0.5Sr0.5MnO3 perovskite. Irreversibility and sharp anomalies in the magnetostriction, magnetization, and magnetoresistance isotherms take place at low temperatures (<90 K), which have been attributed to the establishment of a charge-ordered state (CO). For temperatures lower than approximate to 42 K, the CO state coexists with a cluster-glass state, as deduced from the magnetic and specific heat behavior and neutron scattering experiments. The linear-thermal-expansion measurements show an abrupt drop for T approximate to T-CO when a sufficiently high magnetic field is applied. The appearance of this anomaly has been attributed to the partial delocalization of the carriers by the field. (C) 1998 American Institute of Physics.

Item Type:	Journal Article
Subjects:	Q Science > QC Physics
Journal or Publication Title:	JOURNAL OF APPLIED PHYSICS
Publisher:	AMER INST PHYSICS
ISSN:	0021-8979
Date:	15 June 1998
Volume:	83
Number:	12
Number of Pages:	4
Page Range:	pp. 7664-7667
Publication Status:	Published
URI:	http://wrap.warwick.ac.uk/id/eprint/15485

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