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Strong nonlinear current–voltage behaviour in iron oxyborate
Author(s) -
Yuanjun Song,
Yingying Xu,
Yujun Song,
Jianqi Li,
Rongming Wang
Publication year - 2014
Publication title -
aip advances
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.421
H-Index - 58
ISSN - 2158-3226
DOI - 10.1063/1.4901177
Subject(s) - materials science , crystallite , nonlinear system , condensed matter physics , dielectric , varistor , ferroelectricity , grain boundary , voltage , phase (matter) , electrical resistivity and conductivity , composite material , optoelectronics , chemistry , microstructure , electrical engineering , metallurgy , physics , quantum mechanics , engineering , organic chemistry
Strong nonlinear resistance has been found in the charge ordered ferroelectric iron oxyborate (Fe2OBO3) with a high dielectric constant and giant converse magnetoelectric effect. In low temperature range the I-V nonlinearity increases quickly with decreasing temperature. Transport measurements on polycrystalline and single crystal Fe2OBO3 indicate that the nonlinearity is not induced by grain boundaries. The nonlinear I-V behavior is intrinsically correlated with the charge order phase melting in Fe2OBO3 by detailed in-situ TEM investigations. These results provide an insight into structure-activity relationship of resistance switching effects at atomic and electric scales, which is essential for its potential application as varistors and storage media

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