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Magnetic and electric field characterization of La 2 CoMnO 6 crystals doped with Pb
Author(s) -
Yankova L.,
Milenov T. I.,
Rafailov P. M.,
Avdeev G. V.,
Veleva M. N.,
Gosopodinov M. M.
Publication year - 2013
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.201300081
Subject(s) - polaron , condensed matter physics , curie temperature , dielectric , doping , electrical resistivity and conductivity , materials science , relaxation (psychology) , conductivity , characterization (materials science) , crystal (programming language) , analytical chemistry (journal) , nuclear magnetic resonance , chemistry , physics , ferromagnetism , nanotechnology , psychology , social psychology , optoelectronics , chromatography , quantum mechanics , computer science , programming language , electron
Crystals of La 2 CoMnO 6 doped with Pb were successfully grown by the high temperature solution growth method and their magnetic and transport properties were studied. The examined crystal is found to have predominantly ordered Co 2+ /Mn 4+ structure with randomly distributed Mn 3+ substituting Co 2+ . A relaxor‐like temperature dependence of the dielectric constant with relaxation maximum is established in the temperature interval 180–210 K. On the base of the dc‐conductivity data, it is assumed that the charge transport in the interval 180–350 K is governed by small‐polaron hopping, whose onset coincides with the Curie temperature.