caa a22 4500 445828315 CHVBK 20180317145306.0 cr unu---uuuuu 170323e20110801xx s 000 0 eng 10.1007/s10854-010-0280-y doi (NATIONALLICENCE)springer-10.1007/s10854-010-0280-y Wide range magnetoresistance and high temperature coefficient of resistance in La0.7Sr0.3−xAgxMnO3 system [Elektronische Daten] [Rashmi Yadav, Avneesh Anshul, Vilas Shelke] We report observation of composition and process parameter dependant wide range magnetoresistance and high temperature coefficient of resistance in La0.7Sr0.3−xAgxMnO3 (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. Springer Science+Business Media, LLC, 2010 Yadav Rashmi Department of Physics, Barkatullah University, 462026, Bhopal, India aut Anshul Avneesh Advanced Materials Processing and Research Institute, CSIR, 462026, Bhopal, India aut Shelke Vilas Department of Physics, Barkatullah University, 462026, Bhopal, India aut Journal of Materials Science: Materials in Electronics Springer US; http://www.springer-ny.com 22/8(2011-08-01), 1173-1180 0957-4522 22:8<1173 2011 22 10854 https://doi.org/10.1007/s10854-010-0280-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10854-010-0280-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Yadav Rashmi Department of Physics, Barkatullah University, 462026, Bhopal, India aut NATIONALLICENCE 700 1- Anshul Avneesh Advanced Materials Processing and Research Institute, CSIR, 462026, Bhopal, India aut NATIONALLICENCE 700 1- Shelke Vilas Department of Physics, Barkatullah University, 462026, Bhopal, India aut NATIONALLICENCE 773 0- Journal of Materials Science: Materials in Electronics Springer US; http://www.springer-ny.com 22/8(2011-08-01), 1173-1180 0957-4522 22:8<1173 2011 22 10854 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer