NDLI: Wide range magnetoresistance and high temperature coefficient of resistance in La$_{0.7}$Sr$_{0.3−x}$Ag$_{x}$MnO$

Content Provider	Springer Nature Link
Author	Yadav, Rashmi Anshul, Avneesh Shelke, Vilas
Copyright Year	2010
Abstract	We report observation of composition and process parameter dependant wide range magnetoresistance and high temperature coefficient of resistance in La$_{0.7}$Sr$_{0.3−x}$Ag$_{x}$MnO$_{3}$ (0 ≤ x ≤ 0.3) system. The polycrystalline samples synthesized through solid state reaction method exhibited rhombohedral structure with systematic change in lattice parameters. The samples with x ≤ 0.2 showed metallic behavior below room temperature. A broad metal-insulator transition is observed for x = 0.3, which becomes sharp for the samples sintered at high temperature. The broad transition resulted in magnetoresistance (MR) value around 35% over a wide temperature range whereas the sharp transition results in MR value as high as 85%. The temperature coefficient of resistance value of 11% is seen as a consequence of sharp transition. The magnetic transition was sharp for the samples sintered at high temperature.
Starting Page	1173
Ending Page	1180
Page Count	8
File Format	PDF
ISSN	09574522
Journal	Journal of Materials Science: Materials in Electronics
Volume Number	22
Issue Number	8
e-ISSN	1573482X
Language	English
Publisher	Springer US
Publisher Date	2011-01-06
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Optical and Electronic Materials Characterization and Evaluation of Materials
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Biomaterials Biophysics Condensed Matter Physics Electronic, Optical and Magnetic Materials Bioengineering Electrical and Electronic Engineering Biomedical Engineering

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