Study of Sb substitution for Pr in the Pr0.67Ba0.33MnO3 system (Articolo in rivista)

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  • Study of Sb substitution for Pr in the Pr0.67Ba0.33MnO3 system (Articolo in rivista) (literal)
Anno
  • 2009-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.jmmm.2008.09.011 (literal)
Alternative label
  • Garg, K.B.; Nordblad, P.; Heinonen, M.; Panwar, N.; Sen, V.; Bondino, F.; Magnano, E.; Carleschi, E.; Parmigiani, F.; Agarwal, S.K (2009)
    Study of Sb substitution for Pr in the Pr0.67Ba0.33MnO3 system
    in Journal of magnetism and magnetic materials
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Garg, K.B.; Nordblad, P.; Heinonen, M.; Panwar, N.; Sen, V.; Bondino, F.; Magnano, E.; Carleschi, E.; Parmigiani, F.; Agarwal, S.K (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 321 (literal)
Rivista
Note
  • Scopus (literal)
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Department of Physics, University of Rajasthan, Jaipur, 302004 Rajasthan, India Department of Engineering Sciences, Uppsala University, Box 534, 751 21 Uppsala, Sweden Department of Material Science, Turku University, Turku, 20014, Finland Superconductivity and Cryogenics Division, National Physical Laboratory, Dr. K S Krishnan Marg, New Delhi, 110012, India CNR-Laboratorio Nazionale TASC-INFM, Area Science Park, I-34012 Basovizza, TS, Italy (literal)
Titolo
  • Study of Sb substitution for Pr in the Pr0.67Ba0.33MnO3 system (literal)
Abstract
  • WestudytheeffectofSbsubstitutionforPrinthehole-dopedsystemPr0.67Ba0.33MnO3 (PBMO)for different dopinglevelsofSb.Thetwoelectricalresistivitytransitionsobservedinthepristinesample PBMOshifttolowtemperaturesonSbdopingwithanoverallincreaseintheelectricalresistivity.The significantlocallatticedistortionandthegrainboundaryeffectscausedbythelargecationsize mismatchbetweenPr3+ and Sb3+ suppressesthedouble-exchange(DE)interactionandenhancesthe super-exchange(SE)interaction.Thecompoundsshowasignificantandincreasingvalueof magnetoresistanceattemperaturesbelowtheCurietemperature,notexpectedfromtheDEmodel. The CurietemperaturedecreaseswithincreaseinSbcontentbutthesaturationmagnetizationislittle affectedbythesubstitution.Thespins,however,staywellalignedinthelow-temperatureregime.Our X-raynear-edgeabsorptionspectra(XANES)andcorelevelphotoemission(XPS)dataclearlyshowthe Sb cationtobein+3stateandruleoutanypossibilityofe-dopinginourcompounds. (literal)
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