Dielectric properties and ac conductivities of Bi1−xSmxFeO3 ceramics. Issue 196 (12th February 2019)

• Record Type: Journal Article
• Authors: Sadykov, S. A.; Kallaev, S. N.; Alikhanov, N. M.-R.; Bormanis, K.; Kalvane, A.
• Is Part Of: Integrated ferroelectrics. Issue 196(2019)
• Page Start: 100
• Page End: 104
• Publication Date: 2019-02-12
• Subjects: BiFeO3 ceramics -- dielectric properties -- conductivity; Ferroelectric devices -- Periodicals; Integrated circuits -- Periodicals; 537.244805
• DOI: 10.1080/10584587.2019.1591968
• Languages: English
• ISSNs: 1058-4587

Abstract

Abstract: Dielectric permittivity, dielectric losses and ac-conductivity of polycrystalline Bi1− x Sm x FeO3 ( x = 0; 0.05; 0.1; 0.15; 0.2) are measured in the frequency range 1 kHz–10 MHz and in the temperature range 25–600 °C. Anomalies have been observed at the 200 °C, 300 °C and at the Néel temperature. It has been demonstrated that doping with Sm has enhanced the dielectric properties and increased conduction in the frequency region <1 MHz. At high frequency (>1 MHz) and at a certain temperature T m, depending on the composition Bi1− x Sm x FeO3, the conductivity reaches a maximum. The results are discussed with reference to the model of correlated barrier hopping.