caa a22 4500 445380934 CHVBK 20180317143017.0 cr unu---uuuuu 170323e20110101xx s 000 0 eng 10.1007/s10948-010-1037-9 doi (NATIONALLICENCE)springer-10.1007/s10948-010-1037-9 Effect of Nickel Doping on the Magnetotransport Properties ofSm0.55Sr0.45MnO3 Manganites [Elektronische Daten] [M. Abdelhadi, K. Ziq] We studied the effects of nickel (Ni) doping on the magneto-transport properties of Sm0.55Sr0.45MnO3 manganites near the metal-insulator transition. Various concentrations of Ni-doped Sm0.55Sr0.45MnO3 samples up to 10% were prepared (Ni was partially substituted at the Mn-site). The temperature dependence of resistivity and magnetoresistance were measured as a function of Ni concentrations at various applied magnetic fields. We observed a nonlinear reduction of the metal-insulator transition temperature (MIT) with increasing concentration of Ni, 5% of Ni was sufficient to completely suppress the insulator-metal transition. Moreover, we observed dramatic increases of the resistance of the doped material with an increasing Ni-doping (5% of Ni increases R by more than 1000 times). The resistivity peaks at various magnetic fields collapses on themselves at the high temperature ends above the MIT. We also performed magnetization versus temperature measurements on both Ni-free the Ni-doped samples for FC and ZFC states. The FC and ZFC curves rapidly decrease to paramagnetic state at 175K and 130K for ZFC and FC states, respectively. For other Ni-doped samples, we observed a reduction in the paramagnetic transition temperature with increasing Ni concentration. Springer Science+Business Media, LLC, 2010 Magnetic materials doping nationallicence Manganese oxides nationallicence Transport properties nationallicence Abdelhadi M. Department of Physics, University of Hail, P.O. Box 2440, Hail, Saudi Arabia aut Ziq K. Department of Physics, King Fahd Univ. of Petroleum and Minerals, 3126, Dhahran, Saudi Arabia aut Journal of Superconductivity and Novel Magnetism Springer US; http://www.springer-ny.com 24/1-2(2011-01-01), 319-323 1557-1939 24:1-2<319 2011 24 10948 https://doi.org/10.1007/s10948-010-1037-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10948-010-1037-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Abdelhadi M. Department of Physics, University of Hail, P.O. Box 2440, Hail, Saudi Arabia aut NATIONALLICENCE 700 1- Ziq K. Department of Physics, King Fahd Univ. of Petroleum and Minerals, 3126, Dhahran, Saudi Arabia aut NATIONALLICENCE 773 0- Journal of Superconductivity and Novel Magnetism Springer US; http://www.springer-ny.com 24/1-2(2011-01-01), 319-323 1557-1939 24:1-2<319 2011 24 10948 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer