National Changhua University of Education Institutional Repository : Item 987654321/15365

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NCUEIR > College of Science > Department of Physics > Periodical Articles > Item 987654321/15365

Please use this identifier to cite or link to this item: http://ir.ncue.edu.tw/ir/handle/987654321/15365

Title:	Magnetic and Transport Properties of La0.7-xPrxPb0.3 MnO3
Authors:	Chen, H. Z.;Young, S. L.;Chen, Y. C.;Horng, Lance;Shi, J. B.
Contributors:	物理學系
Keywords:	Colossal magnetoresistance;Ferromagnetic-paramagnetic;Metal-insulator
Date:	2003-05
Issue Date:	2013-02-05T02:18:16Z
Publisher:	Elsevier
Abstract:	The substitution of Pr on the La site in La1−xPrxPb0.3MnO3 has been studied in order to probe into the physical mechanisms of colossal magnetoresistance (CMR) behavior. The magnetic order changes from a long-range order with x=0.0 to a short-range nature with x=0.7. The ferro-paramagnetic and metal-insulator transition temperature values decrease as Pr content increases. The highest MR ratio value is 16.9% for x=0.0 against 41.6% for x=0.7 in an applied field of . It is suggested that the mean ionic radius of the La-site ions may plays an important role on the CMR effect.
Relation:	Physica B: Condensed Matter, 329-333 Part 2: 729-730
Appears in Collections:	[Department of Physics] Periodical Articles

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