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Effect of electronegativity on transport properties of (La 0.83 M 0.17 ) 0.67 Ca 0.33 MnO 3 (M = Y, Bi)
Author(s) -
Xia Z. C.,
Dong B.,
Liu G.,
Liu D. W.,
Chen L.,
Fang C. H.,
Liu L.,
Liu S.,
Tang C. Q.,
Yuan S. L.
Publication year - 2005
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.200406899
Subject(s) - electronegativity , ionic radius , magnetoresistance , doping , ionic bonding , analytical chemistry (journal) , chemistry , ion , radius , condensed matter physics , materials science , magnetic field , physics , computer security , organic chemistry , chromatography , quantum mechanics , computer science
Electrical transport and magnetic properties of (La 0.83 M 0.17 ) 0.67 Ca 0.33 MnO 3 (M = Y and Bi) have been investigated. Experimental results show that the doped samples have obviously different electrical transport and magnetic properties; the difference cannot be interpreted only on the basis of the effect of the ionic radius 〈 r A 〉, where 〈 r A 〉 is the average ionic radii of A‐site cations. Together with the ionic radius and the electronegativity of the doping ion, the differences of electrical transport and magnetic properties between the Bi 3+ ‐ and Y 3+ ‐doped (La 0.83 M 0.17 ) 0.67 Ca 0.33 MnO 3 are discussed, in which the electronegativity has an important effect on the electrical transport and magnetic properties. Especially, the Bi‐doped sample shows an enhanced magnetoresistance with a widened temperature window, which is encouraging concerning the potential application of magnetoresistive materials. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
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