caa a22 4500 445383356 CHVBK 20180317143024.0 cr unu---uuuuu 170323e20110701xx s 000 0 eng 10.1007/s10948-010-0846-1 doi (NATIONALLICENCE)springer-10.1007/s10948-010-0846-1 Low-field Magnetoresistance, Specific Heat and Magnetocaloric Effect in Sr Substituted Pr0.7Ca0.3MnO3 [Elektronische Daten] [Anjana Dogra, Sudhindra Rayaprol, Shovit Bhattacharya, Matthias Eul, Wilfried Hermes, Rainer Pöttgen] We investigate the effect of ionic size variation on the electrical and thermodynamic properties in a series of Pr0.7Ca0.3−x Sr x MnO3 (PCSMO) samples. The increase in Sr content results in an increase of the unit cell volume, as a bigger Sr2+ ion replaces the smaller Ca2+ ions. Resistivity measurements show that the increase in the Sr content also results in the induction of a metal-insulator transition(T MI), which increases with increasing Sr content. The activation energy(E a), calculated from the resistivity data, decreases with increasing Sr content confirming the metallic character. The effect of the magnetic field on resistivity and specific heat has also been studied. Springer Science+Business Media, LLC, 2010 Manganites nationallicence Magnetoresistance nationallicence Specific heat nationallicence Magnetization nationallicence Dogra Anjana Technical Physics Division, Bhabha Atomic Research Centre, Trombay, 400085, Mumbai, India aut Rayaprol Sudhindra UGC DAE Consortium for Scientific Research, R-5 Shed, BARC Campus, Trombay, 400085, Mumbai, India aut Bhattacharya Shovit Technical Physics Division, Bhabha Atomic Research Centre, Trombay, 400085, Mumbai, India aut Eul Matthias Institut für Anorganische und Analytische Chemie, Universität Münster, Corrensstrasse 30, 48149, Münster, Germany aut Hermes Wilfried Institut für Anorganische und Analytische Chemie, Universität Münster, Corrensstrasse 30, 48149, Münster, Germany aut Pöttgen Rainer Institut für Anorganische und Analytische Chemie, Universität Münster, Corrensstrasse 30, 48149, Münster, Germany aut Journal of Superconductivity and Novel Magnetism Springer US; http://www.springer-ny.com 24/5(2011-07-01), 1425-1431 1557-1939 24:5<1425 2011 24 10948 https://doi.org/10.1007/s10948-010-0846-1 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10948-010-0846-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Dogra Anjana Technical Physics Division, Bhabha Atomic Research Centre, Trombay, 400085, Mumbai, India aut NATIONALLICENCE 700 1- Rayaprol Sudhindra UGC DAE Consortium for Scientific Research, R-5 Shed, BARC Campus, Trombay, 400085, Mumbai, India aut NATIONALLICENCE 700 1- Bhattacharya Shovit Technical Physics Division, Bhabha Atomic Research Centre, Trombay, 400085, Mumbai, India aut NATIONALLICENCE 700 1- Eul Matthias Institut für Anorganische und Analytische Chemie, Universität Münster, Corrensstrasse 30, 48149, Münster, Germany aut NATIONALLICENCE 700 1- Hermes Wilfried Institut für Anorganische und Analytische Chemie, Universität Münster, Corrensstrasse 30, 48149, Münster, Germany aut NATIONALLICENCE 700 1- Pöttgen Rainer Institut für Anorganische und Analytische Chemie, Universität Münster, Corrensstrasse 30, 48149, Münster, Germany aut NATIONALLICENCE 773 0- Journal of Superconductivity and Novel Magnetism Springer US; http://www.springer-ny.com 24/5(2011-07-01), 1425-1431 1557-1939 24:5<1425 2011 24 10948 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer