Electrical switching to probe complex phases in a frustrated manganite

Asthana, Saket and Fujiwara, K and Tanaka, K (2014) Electrical switching to probe complex phases in a frustrated manganite. Solid State Communications, 187. pp. 64-67. ISSN 0038-1098

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Abstract

Electrical switching was used to investigate complex phases induced by Cr-substitution in (Pr1/3Sm2/3)2/3Sr 1/3MnO3. This system was expected to transform from a Type I (Mn4+/Mn3+≈3/7) to Type II (Mn4+/Mn 3+≈1) manganite at critical Cr content, satisfying a virtual Mn4+/Mn3+ ratio close to unity. The phase diagram of (Pr1/3Sm2/3)2/3Sr1/3Mn 0.8Cr0.2O3 including charge/spin ordered/disordered phases was probed by electrical switching. The ferromagnetic insulating phase at <~100 K, located next to the charge-ordered antiferromagnetic phase, exhibited a sudden rise in conductivity upon electric-field biasing. This resulted from the melting of charge ordering, and demonstrated the presence of a crossover regime of two coexisting magnetic orderings.

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IITH Creators:	IITH Creators ORCiD Asthana, Saket http://orcid.org/0000-0002-6420-3304
Item Type:	Article
Uncontrolled Keywords:	A. Charge ordered manganites; D. Electronic phase separation; E. Electrical switching
Subjects:	Physics Physics > Magnetism
Divisions:	Department of Physics
Depositing User:	Team Library
Date Deposited:	28 Nov 2014 09:55
Last Modified:	29 Aug 2017 09:41
URI:	http://raiithold.iith.ac.in/id/eprint/1053
Publisher URL:	https://doi.org/10.1016/j.ssc.2014.02.014
OA policy:	http://www.sherpa.ac.uk/romeo/issn/0038-1098/
Related URLs:	Google Scholar

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