Effect of External and Internal Pressures on the Insulator-metal Transition Temperature of the Colossal magneto-resistive Materials

Sen, Vikram; Panwar, Neeraj; Singhal, S K; Singh, B P; Agarwal, S K

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Please use this identifier to cite or link to this item: http://nopr.niscpr.res.in/handle/123456789/26998

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DC Field	Value	Language
dc.contributor.author	Sen, Vikram	-
dc.contributor.author	Panwar, Neeraj	-
dc.contributor.author	Singhal, S K	-
dc.contributor.author	Singh, B P	-
dc.contributor.author	Agarwal, S K	-
dc.date.accessioned	2014-02-27T05:05:41Z	-
dc.date.available	2014-02-27T05:05:41Z	-
dc.date.issued	2004-12	-
dc.identifier.issn	0975-2412 (Online); 0771-7706 (Print)	-
dc.identifier.uri	http://hdl.handle.net/123456789/26998	-
dc.description	247-248	en_US
dc.description.abstract	We have studied the effect of external pressure (10-40Kbar) and internal pressure on the conduction mechanism of Pr_2/3Ca_1/3MnO₃ colossal magneto-resistive materials. Pr_2/3Ca_1/3MnO₃ is an insulator at low temperatures and on applying external pressure above 10Kbar there is a plateau in resistivity at 115K temperature, giving indications of an insulator-metal transition. Similar indications are also seen at 113K on replacing Mn⁺³ by Fe⁺³ in Pr_2/3Ca_1/3MnO₃. Such a behaviour of Pr_2/3Ca_1/3MnO₃ and Pr_2/3Ca_1/3FeO₃ has been explained on the basis of competition between double exchange and super-exchange mechanisms.	en_US
dc.language.iso	en_US	en_US
dc.publisher	NISCAIR-CSIR, India	en_US
dc.rights	CC Attribution-Noncommercial-No Derivative Works 2.5 India	en_US
dc.source	BVAAP Vol.12(2) [December 2004]	en_US
dc.title	Effect of External and Internal Pressures on the Insulator-metal Transition Temperature of the Colossal magneto-resistive Materials	en_US
dc.type	Article	en_US
Appears in Collections:	BVAAP Vol.12(2) [December 2004]

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