Features of the electrical resistance in magnetoelectric ceramics (1-x)BiFeO3-xMgFe2O4. (1st September 2016)

• Record Type: Journal Article
• Authors: Kamynin, A. A.; Gridnev, S. A.; Kozlenko, D. P.; Kichanov, S. E.; Lukin, E. V.; Savenko, B. N.
• Is Part Of: Ferroelectrics. Volume 501(2016)
• Page Start: 114
• Page End: 121
• Publication Date: 2016-09-01
• Subjects: Ceramics -- multifferroic -- bismuth ferrite -- magnesium ferrite -- resistivity -- PTC thermistor effect; Ferroelectricity -- Periodicals; Ferroelectric crystals -- Periodicals; 537
• DOI: 10.1080/00150193.2016.1202031
• Languages: English
• ISSNs: 0015-0193

Abstract

ABSTRACT: Resistivity study of two-phase ceramics (1- x ) BiFeO3 - x MgFe2 O4 showed the presence of PTC thermistor anomaly at a temperature of 260°C, which is less than the phase transition temperatures in the starting components of the system. To elucidate the nature of the thermistor anomaly, the measurements of samples annealed in reducing H2 or CO2 atmosphere carried out. The physical picture of the observed resistivity maximum is discussed.