Investigating NTC thermistor, ferroelectric and electric properties of Fe2TiO5
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Pure phase orthorhombic pseudobrookite (Fe2TiO5) was synthesized using a
modified sol-gel method. Bulk samples were obtained by uniaxial pressing of the
obtained powder into compacts sintered at 900 oC for 2 h. A noticeable NTC
thermistor effect was noted with a B20/55 value of 5747 K and high resistivity of 45
Mcm at 25 oC. A non-linear current-voltage characteristic was observed in the
voltage range (0.2–1100 V) at room temperature (25 oC). Non-saturated (lossy) P-E
loops were obtained at both measured frequencies (100 Hz and 1 kHz) more
expressed for the higher measured frequency, with the maximal polarization of
0.291 mikroC/cm2 and remanent polarization of 0.123 mikroC/cm2 for 20 kV/cm2 and 1 kHz.
Complex impedance measured in the temperature range 20–330 oC enabled analysis
of the contribution of grain boundary and grains to the conduction mechanism. Bulk
conductivity data determined in this temperature range was analyzed using
Jonscher’s universal dielectric respon...se model and showed that the conduction
process followed the nearest neighbor hopping conduction mechanism.
Keywords:
Fe2TiO5; thermistor; ferroelectric properties; electric propertiesSource:
Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia, 2023, 2023, 118-Publisher:
- Institut za multidisciplinarna istraņivanja Kneza Vińeslava 1, 11000 Belgrade, Serbia
Funding / projects:
- info:eu-repo/grantAgreement/MESTD/inst-2020/200053/RS// IMSI (RS-MESTD-inst-2020-200053)
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Institution/Community
Institut za multidisciplinarna istraživanjaTY - CONF AU - Vasiljević, Zorka Z AU - Dojčinović, Milena AU - Ilić, Nikola AU - Vujančević, Jelena AU - Nikolić, Maria Vesna PY - 2023 UR - http://rimsi.imsi.bg.ac.rs/handle/123456789/3177 AB - Pure phase orthorhombic pseudobrookite (Fe2TiO5) was synthesized using a modified sol-gel method. Bulk samples were obtained by uniaxial pressing of the obtained powder into compacts sintered at 900 oC for 2 h. A noticeable NTC thermistor effect was noted with a B20/55 value of 5747 K and high resistivity of 45 Mcm at 25 oC. A non-linear current-voltage characteristic was observed in the voltage range (0.2–1100 V) at room temperature (25 oC). Non-saturated (lossy) P-E loops were obtained at both measured frequencies (100 Hz and 1 kHz) more expressed for the higher measured frequency, with the maximal polarization of 0.291 mikroC/cm2 and remanent polarization of 0.123 mikroC/cm2 for 20 kV/cm2 and 1 kHz. Complex impedance measured in the temperature range 20–330 oC enabled analysis of the contribution of grain boundary and grains to the conduction mechanism. Bulk conductivity data determined in this temperature range was analyzed using Jonscher’s universal dielectric response model and showed that the conduction process followed the nearest neighbor hopping conduction mechanism. PB - Institut za multidisciplinarna istraņivanja Kneza Vińeslava 1, 11000 Belgrade, Serbia C3 - Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia, 2023 T1 - Investigating NTC thermistor, ferroelectric and electric properties of Fe2TiO5 SP - 118 UR - https://hdl.handle.net/21.15107/rcub_rimsi_3177 ER -
@conference{ author = "Vasiljević, Zorka Z and Dojčinović, Milena and Ilić, Nikola and Vujančević, Jelena and Nikolić, Maria Vesna", year = "2023", abstract = "Pure phase orthorhombic pseudobrookite (Fe2TiO5) was synthesized using a modified sol-gel method. Bulk samples were obtained by uniaxial pressing of the obtained powder into compacts sintered at 900 oC for 2 h. A noticeable NTC thermistor effect was noted with a B20/55 value of 5747 K and high resistivity of 45 Mcm at 25 oC. A non-linear current-voltage characteristic was observed in the voltage range (0.2–1100 V) at room temperature (25 oC). Non-saturated (lossy) P-E loops were obtained at both measured frequencies (100 Hz and 1 kHz) more expressed for the higher measured frequency, with the maximal polarization of 0.291 mikroC/cm2 and remanent polarization of 0.123 mikroC/cm2 for 20 kV/cm2 and 1 kHz. Complex impedance measured in the temperature range 20–330 oC enabled analysis of the contribution of grain boundary and grains to the conduction mechanism. Bulk conductivity data determined in this temperature range was analyzed using Jonscher’s universal dielectric response model and showed that the conduction process followed the nearest neighbor hopping conduction mechanism.", publisher = "Institut za multidisciplinarna istraņivanja Kneza Vińeslava 1, 11000 Belgrade, Serbia", journal = "Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia, 2023", title = "Investigating NTC thermistor, ferroelectric and electric properties of Fe2TiO5", pages = "118", url = "https://hdl.handle.net/21.15107/rcub_rimsi_3177" }
Vasiljević, Z. Z., Dojčinović, M., Ilić, N., Vujančević, J.,& Nikolić, M. V.. (2023). Investigating NTC thermistor, ferroelectric and electric properties of Fe2TiO5. in Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia, 2023 Institut za multidisciplinarna istraņivanja Kneza Vińeslava 1, 11000 Belgrade, Serbia., 118. https://hdl.handle.net/21.15107/rcub_rimsi_3177
Vasiljević ZZ, Dojčinović M, Ilić N, Vujančević J, Nikolić MV. Investigating NTC thermistor, ferroelectric and electric properties of Fe2TiO5. in Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia, 2023. 2023;:118. https://hdl.handle.net/21.15107/rcub_rimsi_3177 .
Vasiljević, Zorka Z, Dojčinović, Milena, Ilić, Nikola, Vujančević, Jelena, Nikolić, Maria Vesna, "Investigating NTC thermistor, ferroelectric and electric properties of Fe2TiO5" in Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia, 2023 (2023):118, https://hdl.handle.net/21.15107/rcub_rimsi_3177 .