PROPERTIES OF LANTHANUM DOPED BARIUM TITANATE PRODUCED FROM NANOPOWDERS
Аутори
Vijatović Petrović, MirjanaBobić, Jelena
ZAGHETE, MARIA
Zivkovic, Ljiljana
Stojanović, Biljana
Конференцијски прилог (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
As a first discovered ferroelectric ceramic, barium titanate has become one of the
most extensively investigated ceramic materials used in electronics. For many years, A- and
B-site dopants have been used to modify the electrical properties of BaTiO3. in this paper,
barium titanate doped with 0.3 mol% of lanthanum and sintered at different sintering times
was investigated. Doped barium titanate nanopowder was prepared by doping pure barium
titanate starting from citrate solutions of all components: barium, titanium and lanthanum.
Experimental procedure was given in detail in previous reports. Obtained powders were
pressed in to pellets and sintered at 1300 "C for 2 and 16h in air atmosphere. The formation
of phase and crystal structure of BaTiO3 was carried out by XRD analysis. Microstructural
properties such as grain size distribution and morphology of sintered samples were
determined using scanning electron microscope. Measurement of dielectric constant and
dielectric loss...es was provided in the frequency range of 20 to 106 Hz. The variation of the
dielectric constant with temperature was measured in temperature interval from 20 to 180 oC.
. The XRD analysis of doped barium titanate indicates the formation of tetragonal
phase in samples sintered at both sintering times. Lanthanum has an influence on grain growth and shape of grains in doped barium titanate [2]. It was detected that the grain-size
also depends on sintering time. It can be notified the effect of lanthanum and sintering time
on dielectric constant. Lanthanum also has influence on decreasing the Curie temperature
of barium titanate. No frequency dependence of dielectric constant,was detected.
Кључне речи:
ferroelectric ceramic / BaTiO3 / Microstructural properties / dielectric constant / Curie temperatureИзвор:
4'n Workshop Fabrication, Properties & Applications of Electroceramic Nanostructures, Abstracts June 26-28,2008 Genoa, Italy, 2008Издавач:
- 4'n Workshop Fabrication, Properties & Applications of Electroceramic Nanostructures, Abstracts June 26-28,2008 Genoa, Italy
Институција/група
Institut za multidisciplinarna istraživanjaTY - CONF AU - Vijatović Petrović, Mirjana AU - Bobić, Jelena AU - ZAGHETE, MARIA AU - Zivkovic, Ljiljana AU - Stojanović, Biljana PY - 2008 UR - http://rimsi.imsi.bg.ac.rs/handle/123456789/2690 AB - As a first discovered ferroelectric ceramic, barium titanate has become one of the most extensively investigated ceramic materials used in electronics. For many years, A- and B-site dopants have been used to modify the electrical properties of BaTiO3. in this paper, barium titanate doped with 0.3 mol% of lanthanum and sintered at different sintering times was investigated. Doped barium titanate nanopowder was prepared by doping pure barium titanate starting from citrate solutions of all components: barium, titanium and lanthanum. Experimental procedure was given in detail in previous reports. Obtained powders were pressed in to pellets and sintered at 1300 "C for 2 and 16h in air atmosphere. The formation of phase and crystal structure of BaTiO3 was carried out by XRD analysis. Microstructural properties such as grain size distribution and morphology of sintered samples were determined using scanning electron microscope. Measurement of dielectric constant and dielectric losses was provided in the frequency range of 20 to 106 Hz. The variation of the dielectric constant with temperature was measured in temperature interval from 20 to 180 oC. . The XRD analysis of doped barium titanate indicates the formation of tetragonal phase in samples sintered at both sintering times. Lanthanum has an influence on grain growth and shape of grains in doped barium titanate [2]. It was detected that the grain-size also depends on sintering time. It can be notified the effect of lanthanum and sintering time on dielectric constant. Lanthanum also has influence on decreasing the Curie temperature of barium titanate. No frequency dependence of dielectric constant,was detected. PB - 4'n Workshop Fabrication, Properties & Applications of Electroceramic Nanostructures, Abstracts June 26-28,2008 Genoa, Italy C3 - 4'n Workshop Fabrication, Properties & Applications of Electroceramic Nanostructures, Abstracts June 26-28,2008 Genoa, Italy T1 - PROPERTIES OF LANTHANUM DOPED BARIUM TITANATE PRODUCED FROM NANOPOWDERS UR - https://hdl.handle.net/21.15107/rcub_rimsi_2690 ER -
@conference{ author = "Vijatović Petrović, Mirjana and Bobić, Jelena and ZAGHETE, MARIA and Zivkovic, Ljiljana and Stojanović, Biljana", year = "2008", abstract = "As a first discovered ferroelectric ceramic, barium titanate has become one of the most extensively investigated ceramic materials used in electronics. For many years, A- and B-site dopants have been used to modify the electrical properties of BaTiO3. in this paper, barium titanate doped with 0.3 mol% of lanthanum and sintered at different sintering times was investigated. Doped barium titanate nanopowder was prepared by doping pure barium titanate starting from citrate solutions of all components: barium, titanium and lanthanum. Experimental procedure was given in detail in previous reports. Obtained powders were pressed in to pellets and sintered at 1300 "C for 2 and 16h in air atmosphere. The formation of phase and crystal structure of BaTiO3 was carried out by XRD analysis. Microstructural properties such as grain size distribution and morphology of sintered samples were determined using scanning electron microscope. Measurement of dielectric constant and dielectric losses was provided in the frequency range of 20 to 106 Hz. The variation of the dielectric constant with temperature was measured in temperature interval from 20 to 180 oC. . The XRD analysis of doped barium titanate indicates the formation of tetragonal phase in samples sintered at both sintering times. Lanthanum has an influence on grain growth and shape of grains in doped barium titanate [2]. It was detected that the grain-size also depends on sintering time. It can be notified the effect of lanthanum and sintering time on dielectric constant. Lanthanum also has influence on decreasing the Curie temperature of barium titanate. No frequency dependence of dielectric constant,was detected.", publisher = "4'n Workshop Fabrication, Properties & Applications of Electroceramic Nanostructures, Abstracts June 26-28,2008 Genoa, Italy", journal = "4'n Workshop Fabrication, Properties & Applications of Electroceramic Nanostructures, Abstracts June 26-28,2008 Genoa, Italy", title = "PROPERTIES OF LANTHANUM DOPED BARIUM TITANATE PRODUCED FROM NANOPOWDERS", url = "https://hdl.handle.net/21.15107/rcub_rimsi_2690" }
Vijatović Petrović, M., Bobić, J., ZAGHETE, M., Zivkovic, L.,& Stojanović, B.. (2008). PROPERTIES OF LANTHANUM DOPED BARIUM TITANATE PRODUCED FROM NANOPOWDERS. in 4'n Workshop Fabrication, Properties & Applications of Electroceramic Nanostructures, Abstracts June 26-28,2008 Genoa, Italy 4'n Workshop Fabrication, Properties & Applications of Electroceramic Nanostructures, Abstracts June 26-28,2008 Genoa, Italy.. https://hdl.handle.net/21.15107/rcub_rimsi_2690
Vijatović Petrović M, Bobić J, ZAGHETE M, Zivkovic L, Stojanović B. PROPERTIES OF LANTHANUM DOPED BARIUM TITANATE PRODUCED FROM NANOPOWDERS. in 4'n Workshop Fabrication, Properties & Applications of Electroceramic Nanostructures, Abstracts June 26-28,2008 Genoa, Italy. 2008;. https://hdl.handle.net/21.15107/rcub_rimsi_2690 .
Vijatović Petrović, Mirjana, Bobić, Jelena, ZAGHETE, MARIA, Zivkovic, Ljiljana, Stojanović, Biljana, "PROPERTIES OF LANTHANUM DOPED BARIUM TITANATE PRODUCED FROM NANOPOWDERS" in 4'n Workshop Fabrication, Properties & Applications of Electroceramic Nanostructures, Abstracts June 26-28,2008 Genoa, Italy (2008), https://hdl.handle.net/21.15107/rcub_rimsi_2690 .