{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,25]],"date-time":"2026-03-25T14:43:54Z","timestamp":1774449834918,"version":"3.50.1"},"reference-count":36,"publisher":"AIP Publishing","issue":"8","content-domain":{"domain":["pubs.aip.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2008,10,15]]},"abstract":"<jats:p>Magnetotransport and thermal studies of Pr2\/3Sr1\/3MnO3 polycrystalline sintered bulk sample are reported here. The resistivity \u03c1(T) and thermoelectric power S(T) data show an insulator to metal (I-M) phase transition at TP\u2248294\u2002K and TS\u2248290\u2002K, respectively. Magnetization measurement confirms that the sample undergoes a transition from paramagnetic to ferromagnetic phase at a defined Curie temperature TC=280\u2002K. A substantial increase in magnetoresistance from 2.5% at 280 K to 5% at 77 K has been noticed in a low magnetic field 0.15 T. Small polaron hopping model is found to be operative above the transition temperature TP, whereas electron-electron and electron-magnon scattering processes govern the low temperature metallic behavior. A detailed analysis of thermoelectric power in the ferromagnetic regime suggests that the complicated temperature dependence of S may be understood on the basis of electron-magnon scattering. A transition from decreasing high temperature thermal conductivity (due to local anharmonic distortions associated with small polarons), to an increasing thermal conductivity (due to decreasing of phonon-phonon scattering) and thereafter a peak at \u223c100\u2002K (signifying a crossover from Umklapp to defect-limited scattering) have also been noticed. Specific heat measurements depict a pronounced anomaly near the TC, indicating the magnetic ordering and magnetic inhomogeneity in the sample.<\/jats:p>","DOI":"10.1063\/1.2992521","type":"journal-article","created":{"date-parts":[[2008,10,24]],"date-time":"2008-10-24T22:18:20Z","timestamp":1224886700000},"update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":17,"title":["Magnetotransport, thermoelectric power, thermal conductivity and specific heat of Pr2\/3Sr1\/3MnO3 manganite"],"prefix":"10.1063","volume":"104","author":[{"given":"Neeraj","family":"Panwar","sequence":"first","affiliation":[{"name":"National Physical Laboratory 1 Superconductivity and Cryogenics Division, , Dr. K. S. Krishnan Road, New Delhi-110012, India"},{"name":"Indian Institute of Technology 2 Department of Physics, , New Delhi-110016, India"}]},{"given":"Ashok","family":"Rao","sequence":"additional","affiliation":[{"name":"Manipal Institute of Technology 3 Department of Physics, , Manipal-576104, India"}]},{"given":"R. S.","family":"Singh","sequence":"additional","affiliation":[{"name":"JNV University 4 Department of Physics, , Jodhpur-342001, India"}]},{"given":"W. K.","family":"Syu","sequence":"additional","affiliation":[{"name":"National Dong-Hwa University 5 Department of Physics, , Hualien 974, Taiwan"}]},{"given":"N.","family":"Kaurav","sequence":"additional","affiliation":[{"name":"National Dong-Hwa University 5 Department of Physics, , Hualien 974, Taiwan"}]},{"given":"Y.-K.","family":"Kuo","sequence":"additional","affiliation":[{"name":"National Dong-Hwa University 5 Department of Physics, , Hualien 974, Taiwan"}]},{"given":"S. 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