TY  - JOUR
AU  - Branković, Zorica
AU  - Luković Golić, Danijela
AU  - Radojković, Aleksandar
AU  - Ćirković, Jovana
AU  - Pajić, Damir
AU  - Marinković Stanojević, Zorica
AU  - Xing, Junwei
AU  - Radović, Miladin
AU  - Li, Guorong
AU  - Branković, Goran
PY  - 2016
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/964
AB  - Bismuth ferrite, BiFeO3 (BFO), powder was synthesized by hydrothermal method from Bi(NO3)(3)center dot 5H(2)O and Fe(NO3)(3)center dot 9H(2)O as precursors. The synthesized powder was further sintered using spark plasma sintering (SPS). The sintering conditions were optimized in order to achieve high density, minimal amount of secondary phases and improved ferroelectric andmagnetic properties. The optimal structure and properties were achieved after spark plasma sintering at 630 degrees C for 20min, under uniaxial pressure of 90MPa. The composition, microstructure, ferroelectric and magnetic properties of the SPS samples were characterized and compared to those of conventionally sintered ceramics obtained from the same powder. Although the samples sintered using conventional method showed slightly lower amount of secondary phases, the spark plasma sintered samples exhibited favourable microstructure and better ferroelectric properties.
PB  - Univerzitet u Novom Sadu - Tehnološki fakultet, Novi Sad
T2  - Processing and Application of Ceramics
T1  - Spark plasma sintering of hydrothermally synthesized bismuth ferrite
EP  - 264
IS  - 4
SP  - 257
VL  - 10
DO  - 10.2298/PAC1604257B
ER  - 

@article{
author = "Branković, Zorica and Luković Golić, Danijela and Radojković, Aleksandar and Ćirković, Jovana and Pajić, Damir and Marinković Stanojević, Zorica and Xing, Junwei and Radović, Miladin and Li, Guorong and Branković, Goran",
year = "2016",
abstract = "Bismuth ferrite, BiFeO3 (BFO), powder was synthesized by hydrothermal method from Bi(NO3)(3)center dot 5H(2)O and Fe(NO3)(3)center dot 9H(2)O as precursors. The synthesized powder was further sintered using spark plasma sintering (SPS). The sintering conditions were optimized in order to achieve high density, minimal amount of secondary phases and improved ferroelectric andmagnetic properties. The optimal structure and properties were achieved after spark plasma sintering at 630 degrees C for 20min, under uniaxial pressure of 90MPa. The composition, microstructure, ferroelectric and magnetic properties of the SPS samples were characterized and compared to those of conventionally sintered ceramics obtained from the same powder. Although the samples sintered using conventional method showed slightly lower amount of secondary phases, the spark plasma sintered samples exhibited favourable microstructure and better ferroelectric properties.",
publisher = "Univerzitet u Novom Sadu - Tehnološki fakultet, Novi Sad",
journal = "Processing and Application of Ceramics",
title = "Spark plasma sintering of hydrothermally synthesized bismuth ferrite",
pages = "264-257",
number = "4",
volume = "10",
doi = "10.2298/PAC1604257B"
}

Branković, Z., Luković Golić, D., Radojković, A., Ćirković, J., Pajić, D., Marinković Stanojević, Z., Xing, J., Radović, M., Li, G.,& Branković, G.. (2016). Spark plasma sintering of hydrothermally synthesized bismuth ferrite. in Processing and Application of Ceramics
Univerzitet u Novom Sadu - Tehnološki fakultet, Novi Sad., 10(4), 257-264.
https://doi.org/10.2298/PAC1604257B

Branković Z, Luković Golić D, Radojković A, Ćirković J, Pajić D, Marinković Stanojević Z, Xing J, Radović M, Li G, Branković G. Spark plasma sintering of hydrothermally synthesized bismuth ferrite. in Processing and Application of Ceramics. 2016;10(4):257-264.
doi:10.2298/PAC1604257B .

Branković, Zorica, Luković Golić, Danijela, Radojković, Aleksandar, Ćirković, Jovana, Pajić, Damir, Marinković Stanojević, Zorica, Xing, Junwei, Radović, Miladin, Li, Guorong, Branković, Goran, "Spark plasma sintering of hydrothermally synthesized bismuth ferrite" in Processing and Application of Ceramics, 10, no. 4 (2016):257-264,
https://doi.org/10.2298/PAC1604257B . .

TY  - JOUR
AU  - Dapčević, Aleksandra
AU  - Poleti, Dejan
AU  - Rogan, Jelena
AU  - Radojković, Aleksandar
AU  - Radović, M.
AU  - Branković, Goran
PY  - 2015
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/840
AB  - The possibility to stabilize the delta-Bi2O3-type polymorph with high ionic conductivity by doping with Tm2O3 was investigated in this study. Five microaystalline samples were synthesized at 750 degrees C from alpha-Bi2O3 and Tm2O3 mixtures with compositions (Bi1-xTmx)(2)O-3, where x = 0.04, 0.08, 0.11, 0.14 and 0.20. The XRD, SEM, HRTEM and SAED results showed that the targeted delta-Bi2O3-type single-phase (space group Fm (3) over barm) was formed for 0.11  lt = x  lt = 0.20. The unit cell parameter of delta-Bi2O3-type phase decreases with increase in Tm content. According to DTA, no phase transitions were observed in the sample with x = 020, indicating that the obtained delta-Bi2O3-type phase is structurally stable from room temperature to 985 degrees C. Based on EIS, (Bi0.80Tm0.20)(2)O-3 exhibits high conductivity (0.117 S cm(-1) at 550 degrees C) with activation energies: 0.38(4) eV above 550 degrees C and 127(2) eV below 550 degrees C, due to the change in charge carrier mobility. The effect of thermal aging was investigated and discussed.
PB  - Elsevier Science Bv, Amsterdam
T2  - Solid State Ionics
T1  - A new electrolyte based on Tm3+-doped delta-Bi2O3-type phase with enhanced conductivity
EP  - 23
SP  - 18
VL  - 280
DO  - 10.1016/j.ssi.2015.08.004
ER  - 

@article{
author = "Dapčević, Aleksandra and Poleti, Dejan and Rogan, Jelena and Radojković, Aleksandar and Radović, M. and Branković, Goran",
year = "2015",
abstract = "The possibility to stabilize the delta-Bi2O3-type polymorph with high ionic conductivity by doping with Tm2O3 was investigated in this study. Five microaystalline samples were synthesized at 750 degrees C from alpha-Bi2O3 and Tm2O3 mixtures with compositions (Bi1-xTmx)(2)O-3, where x = 0.04, 0.08, 0.11, 0.14 and 0.20. The XRD, SEM, HRTEM and SAED results showed that the targeted delta-Bi2O3-type single-phase (space group Fm (3) over barm) was formed for 0.11  lt = x  lt = 0.20. The unit cell parameter of delta-Bi2O3-type phase decreases with increase in Tm content. According to DTA, no phase transitions were observed in the sample with x = 020, indicating that the obtained delta-Bi2O3-type phase is structurally stable from room temperature to 985 degrees C. Based on EIS, (Bi0.80Tm0.20)(2)O-3 exhibits high conductivity (0.117 S cm(-1) at 550 degrees C) with activation energies: 0.38(4) eV above 550 degrees C and 127(2) eV below 550 degrees C, due to the change in charge carrier mobility. The effect of thermal aging was investigated and discussed.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Solid State Ionics",
title = "A new electrolyte based on Tm3+-doped delta-Bi2O3-type phase with enhanced conductivity",
pages = "23-18",
volume = "280",
doi = "10.1016/j.ssi.2015.08.004"
}

Dapčević, A., Poleti, D., Rogan, J., Radojković, A., Radović, M.,& Branković, G.. (2015). A new electrolyte based on Tm3+-doped delta-Bi2O3-type phase with enhanced conductivity. in Solid State Ionics
Elsevier Science Bv, Amsterdam., 280, 18-23.
https://doi.org/10.1016/j.ssi.2015.08.004

Dapčević A, Poleti D, Rogan J, Radojković A, Radović M, Branković G. A new electrolyte based on Tm3+-doped delta-Bi2O3-type phase with enhanced conductivity. in Solid State Ionics. 2015;280:18-23.
doi:10.1016/j.ssi.2015.08.004 .

Dapčević, Aleksandra, Poleti, Dejan, Rogan, Jelena, Radojković, Aleksandar, Radović, M., Branković, Goran, "A new electrolyte based on Tm3+-doped delta-Bi2O3-type phase with enhanced conductivity" in Solid State Ionics, 280 (2015):18-23,
https://doi.org/10.1016/j.ssi.2015.08.004 . .