TY  - CONF
AU  - Zemljak, Olivera
AU  - Luković Golić, Danijela
AU  - Počuča-Nešić, Milica
AU  - Dapčević, Aleksandra
AU  - Pajić, Damir
AU  - Šenjug, Pavla
AU  - Branković, Goran
AU  - Branković, Zorica
PY  - 2022
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/2211
AB  - Hexagonal (P63cm) yttrium manganite, YMnO3, is a multiferroic material with
ferroelectric transition at TC ≈ 900 K and antiferromagnetic transition at TN ≈ 70 K. Multiferroic behavior attracts a lot of attention because of its potential for
various applications. The application possibilities are limited by large
microcracking and microporosity of YMnO3 ceramics.
In this work, the influence of Ti-doping on structural, ferroelectric and magnetic
properties of YMnO3 ceramics was investigated. YMn1–xTixO3+δ (x = 0, 0.04, 0.08,
0.10, 0.15, 0.20) powders were prepared using sol-gel, polymerization complex
method from citrate precursors, which were then calcinated at 900 °C for 4 h. The
ceramic samples were obtained after sintering for 2 h at: 1400 °C for YMnO3,
YMn0.96Ti0.04O3+δ, YMn0.92Ti0.08O3+δ and YMn0.90Ti0.10O3+δ; 1450 C for
YMn0.85Ti0.15O3+δ; 1470 °C for YMn0.80Ti0.20O3+δ. X-ray diffraction (XRD),
transmission and scanning electron microscopy (TEM and SEM) were used for
structural and microstructural analysis of samples. Ferroelectric measurements of
P(E) loops and leakage currents, and magnetic measurements of zero field cooled
(ZFC) and field cooled (FC) M(T) curves, as well as M(H) curves, were enabled
multiferroic characterization of ceramic samples.
The samples x = 0 and 0.04 are crystallized in a single phased hexagonal
structure, (P63cm), the samples x = 0.08 and 0.10 exhibited the presence of both
hexagonal phase and rhombohedral phase (R3c), and the samples x = 0.15 and 0.20
are crystallized in rhombohedral 1×1×3 superstructure. Ti-doped YMnO3 ceramic
samples showed reduced density of microcracks, and inter- and intragranular pores,
and large increase in relative density (greater than 90 %) for YMn1–xTixO3+δ (x =
0.10, 0.15 and 0.20) samples. Leakage currents for most of doped samples were
lower than leakage current of undoped sample, but the ferroelectric response was not
significantly improved. Doping of YMnO3 with nonmagnetic Ti4+ led to suppression
of antiferromagnetic ordering visible through decrease of the Néel temperature and
Weiss parameter and the appearance of weak ferromagnetism.
PB  - Institut za multicisciplinarna istrživanja, Belgrade, Serbia
C3  - 6th Conference of The Serbian Society for Ceramic Materials June 28-29, 2022 Belgrade, Serbia 6CSCS-2022
T1  - The influence of Ti-doping on structural and multiferroic properties of yttrium manganite ceramics
SP  - 74
UR  - https://hdl.handle.net/21.15107/rcub_rimsi_2211
ER  - 

@conference{
author = "Zemljak, Olivera and Luković Golić, Danijela and Počuča-Nešić, Milica and Dapčević, Aleksandra and Pajić, Damir and Šenjug, Pavla and Branković, Goran and Branković, Zorica",
year = "2022",
abstract = "Hexagonal (P63cm) yttrium manganite, YMnO3, is a multiferroic material with
ferroelectric transition at TC ≈ 900 K and antiferromagnetic transition at TN ≈ 70 K. Multiferroic behavior attracts a lot of attention because of its potential for
various applications. The application possibilities are limited by large
microcracking and microporosity of YMnO3 ceramics.
In this work, the influence of Ti-doping on structural, ferroelectric and magnetic
properties of YMnO3 ceramics was investigated. YMn1–xTixO3+δ (x = 0, 0.04, 0.08,
0.10, 0.15, 0.20) powders were prepared using sol-gel, polymerization complex
method from citrate precursors, which were then calcinated at 900 °C for 4 h. The
ceramic samples were obtained after sintering for 2 h at: 1400 °C for YMnO3,
YMn0.96Ti0.04O3+δ, YMn0.92Ti0.08O3+δ and YMn0.90Ti0.10O3+δ; 1450 C for
YMn0.85Ti0.15O3+δ; 1470 °C for YMn0.80Ti0.20O3+δ. X-ray diffraction (XRD),
transmission and scanning electron microscopy (TEM and SEM) were used for
structural and microstructural analysis of samples. Ferroelectric measurements of
P(E) loops and leakage currents, and magnetic measurements of zero field cooled
(ZFC) and field cooled (FC) M(T) curves, as well as M(H) curves, were enabled
multiferroic characterization of ceramic samples.
The samples x = 0 and 0.04 are crystallized in a single phased hexagonal
structure, (P63cm), the samples x = 0.08 and 0.10 exhibited the presence of both
hexagonal phase and rhombohedral phase (R3c), and the samples x = 0.15 and 0.20
are crystallized in rhombohedral 1×1×3 superstructure. Ti-doped YMnO3 ceramic
samples showed reduced density of microcracks, and inter- and intragranular pores,
and large increase in relative density (greater than 90 %) for YMn1–xTixO3+δ (x =
0.10, 0.15 and 0.20) samples. Leakage currents for most of doped samples were
lower than leakage current of undoped sample, but the ferroelectric response was not
significantly improved. Doping of YMnO3 with nonmagnetic Ti4+ led to suppression
of antiferromagnetic ordering visible through decrease of the Néel temperature and
Weiss parameter and the appearance of weak ferromagnetism.",
publisher = "Institut za multicisciplinarna istrživanja, Belgrade, Serbia",
journal = "6th Conference of The Serbian Society for Ceramic Materials June 28-29, 2022 Belgrade, Serbia 6CSCS-2022",
title = "The influence of Ti-doping on structural and multiferroic properties of yttrium manganite ceramics",
pages = "74",
url = "https://hdl.handle.net/21.15107/rcub_rimsi_2211"
}

Zemljak, O., Luković Golić, D., Počuča-Nešić, M., Dapčević, A., Pajić, D., Šenjug, P., Branković, G.,& Branković, Z.. (2022). The influence of Ti-doping on structural and multiferroic properties of yttrium manganite ceramics. in 6th Conference of The Serbian Society for Ceramic Materials June 28-29, 2022 Belgrade, Serbia 6CSCS-2022
Institut za multicisciplinarna istrživanja, Belgrade, Serbia., 74.
https://hdl.handle.net/21.15107/rcub_rimsi_2211

Zemljak O, Luković Golić D, Počuča-Nešić M, Dapčević A, Pajić D, Šenjug P, Branković G, Branković Z. The influence of Ti-doping on structural and multiferroic properties of yttrium manganite ceramics. in 6th Conference of The Serbian Society for Ceramic Materials June 28-29, 2022 Belgrade, Serbia 6CSCS-2022. 2022;:74.
https://hdl.handle.net/21.15107/rcub_rimsi_2211 .

Zemljak, Olivera, Luković Golić, Danijela, Počuča-Nešić, Milica, Dapčević, Aleksandra, Pajić, Damir, Šenjug, Pavla, Branković, Goran, Branković, Zorica, "The influence of Ti-doping on structural and multiferroic properties of yttrium manganite ceramics" in 6th Conference of The Serbian Society for Ceramic Materials June 28-29, 2022 Belgrade, Serbia 6CSCS-2022 (2022):74,
https://hdl.handle.net/21.15107/rcub_rimsi_2211 .

TY  - JOUR
AU  - Milošević, Olivera
AU  - Luković Golić, Danijela
AU  - Počuča-Nešić, Milica
AU  - Dapčević, Aleksandra
AU  - Šenjug, Pavla
AU  - Pajić, Damir
AU  - Radošević, Tina
AU  - Branković, Goran
AU  - Branković, Zorica
PY  - 2022
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1750
AB  - Yttrium manganite, YMnO3, was doped with different concentrations of titanium (x = 0, 0.04, 0.08, 0.10, 0.15, 0.20) in order to improve the microstructural and multiferroic properties. The powders were prepared using sol-gel polymerization complex method from citrate precursors. Depending on the titanium concentration, the hexagonal structure and/or the rhombohedral superstructure are present in the sintered samples. The YMn1–xTixO3+δ (x = 0.10, 0.15, 0.20) ceramic samples showed significantly reduced density of microcracks, and of inter- and intragranular pores, and relative densities greater than 90 %. The structural parameters for YMn1–xTixO3+δ (x = 0, 0.10, 0.15) were correlated with the results of magnetic and ferroelectric measurements. The most of titanium-doped samples showed a reduction of the leakage current density in comparison with undoped YMnO3, and their ferroelectric responses were slightly improved. The modifications in structural arrangement resulted in partial suppression of ideal antiferromagnetic ordering visible through decrease of the Néel temperature and Weiss parameter, as well as the appearance of weak ferromagnetism and increase of magnetization (especially, in samples x = 0.08, 0.10, 0.15). These changes in physical quantities most likely originated from incorporation of the uncompensated magnetic moments and possible spin canting induced by enhanced symmetry break of the superexchange bridges.
PB  - Springer
T2  - Journal of Sol-Gel Science and Technology
T1  - Titanium doped yttrium manganite: improvement of microstructural properties and peculiarities of multiferroic properties
EP  - 819
IS  - 3
SP  - 807
VL  - 103
DO  - 10.1007/s10971-022-05872-3
ER  - 

@article{
author = "Milošević, Olivera and Luković Golić, Danijela and Počuča-Nešić, Milica and Dapčević, Aleksandra and Šenjug, Pavla and Pajić, Damir and Radošević, Tina and Branković, Goran and Branković, Zorica",
year = "2022",
abstract = "Yttrium manganite, YMnO3, was doped with different concentrations of titanium (x = 0, 0.04, 0.08, 0.10, 0.15, 0.20) in order to improve the microstructural and multiferroic properties. The powders were prepared using sol-gel polymerization complex method from citrate precursors. Depending on the titanium concentration, the hexagonal structure and/or the rhombohedral superstructure are present in the sintered samples. The YMn1–xTixO3+δ (x = 0.10, 0.15, 0.20) ceramic samples showed significantly reduced density of microcracks, and of inter- and intragranular pores, and relative densities greater than 90 %. The structural parameters for YMn1–xTixO3+δ (x = 0, 0.10, 0.15) were correlated with the results of magnetic and ferroelectric measurements. The most of titanium-doped samples showed a reduction of the leakage current density in comparison with undoped YMnO3, and their ferroelectric responses were slightly improved. The modifications in structural arrangement resulted in partial suppression of ideal antiferromagnetic ordering visible through decrease of the Néel temperature and Weiss parameter, as well as the appearance of weak ferromagnetism and increase of magnetization (especially, in samples x = 0.08, 0.10, 0.15). These changes in physical quantities most likely originated from incorporation of the uncompensated magnetic moments and possible spin canting induced by enhanced symmetry break of the superexchange bridges.",
publisher = "Springer",
journal = "Journal of Sol-Gel Science and Technology",
title = "Titanium doped yttrium manganite: improvement of microstructural properties and peculiarities of multiferroic properties",
pages = "819-807",
number = "3",
volume = "103",
doi = "10.1007/s10971-022-05872-3"
}

Milošević, O., Luković Golić, D., Počuča-Nešić, M., Dapčević, A., Šenjug, P., Pajić, D., Radošević, T., Branković, G.,& Branković, Z.. (2022). Titanium doped yttrium manganite: improvement of microstructural properties and peculiarities of multiferroic properties. in Journal of Sol-Gel Science and Technology
Springer., 103(3), 807-819.
https://doi.org/10.1007/s10971-022-05872-3

Milošević O, Luković Golić D, Počuča-Nešić M, Dapčević A, Šenjug P, Pajić D, Radošević T, Branković G, Branković Z. Titanium doped yttrium manganite: improvement of microstructural properties and peculiarities of multiferroic properties. in Journal of Sol-Gel Science and Technology. 2022;103(3):807-819.
doi:10.1007/s10971-022-05872-3 .

Milošević, Olivera, Luković Golić, Danijela, Počuča-Nešić, Milica, Dapčević, Aleksandra, Šenjug, Pavla, Pajić, Damir, Radošević, Tina, Branković, Goran, Branković, Zorica, "Titanium doped yttrium manganite: improvement of microstructural properties and peculiarities of multiferroic properties" in Journal of Sol-Gel Science and Technology, 103, no. 3 (2022):807-819,
https://doi.org/10.1007/s10971-022-05872-3 . .

TY  - CONF
AU  - Šenjug, Pavla
AU  - Torić, Filip
AU  - Dragović, Jure
AU  - Pajić, Damir
AU  - Luković Golić, Danijela
AU  - Radojković, Aleksandar
AU  - Ćirković, Jovana
AU  - Branković, Goran
PY  - 2017
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/2384
AB  - Bismuth ferrite, BiFeO3 is perovskite multiferroic often studied because of its
high ferroelectric and magnetic ordering temperatures, 1100 K and 630 K,
respectively. Despite its room temperature multiferroicity, pure BiFeO3 is of limited
technological importance, especially in bulk ceramic form, due to the
antiferromagnetic state with very low net magnetic moment. Doping of BiFeO3
could disturb the antiferromagnetic order and induce magnetically ordered state with
considerable magnetization coming from the uncompensated or canted spins.
Therefore, magnetic behaviour of BiFeO3 doped with the heavy rare earth elements
such as La, Yb and Gd, was investigated.
Compounds of BiFeO3 in which 10% of Bi atoms are substituted with La, Yb
and Gd were prepared using the hydro-evaporation synthesis. Magnetization of
polycrystalline samples in powder form was investigated in a broad temperature
range of 2–900 K. Splitting between the zero field cooled (ZFC) and field cooled
(FC) magnetization curves indicate development of the weak ferromagnetism below
the Néel temperature of around 610–640 K which is dependent on the composition.
Magnetic hysteresis loops measured at the low temperature (5 K), room temperature,
and high temperatures, just under and above transition temperature, also suggest the
weak ferromagnetic behavior with relatively high coercive field.
Complete magnetic results in full temperature range (2–900 K) clearly indicate
enhancement of the weak ferromagnetism after performed substitution with rare
earth elements La, Yb and Gd in bulk BiFeO3 ceramic.
PB  - Institut za multidisciplinarna istraživanja, Kneza Višeslava 1, 11000 Belgrade, Serbia
C3  - 4th Conference of the Serbian Society for Ceranic Materials, June 14-16, 2017, Belgrade, Serbia, 4CSCS-2017
T1  - Influence of La, Yb and Gd substitution on magnetic behaviour of bulk BiFeO3
SP  - 106
UR  - https://hdl.handle.net/21.15107/rcub_rimsi_2384
ER  - 

@conference{
author = "Šenjug, Pavla and Torić, Filip and Dragović, Jure and Pajić, Damir and Luković Golić, Danijela and Radojković, Aleksandar and Ćirković, Jovana and Branković, Goran",
year = "2017",
abstract = "Bismuth ferrite, BiFeO3 is perovskite multiferroic often studied because of its
high ferroelectric and magnetic ordering temperatures, 1100 K and 630 K,
respectively. Despite its room temperature multiferroicity, pure BiFeO3 is of limited
technological importance, especially in bulk ceramic form, due to the
antiferromagnetic state with very low net magnetic moment. Doping of BiFeO3
could disturb the antiferromagnetic order and induce magnetically ordered state with
considerable magnetization coming from the uncompensated or canted spins.
Therefore, magnetic behaviour of BiFeO3 doped with the heavy rare earth elements
such as La, Yb and Gd, was investigated.
Compounds of BiFeO3 in which 10% of Bi atoms are substituted with La, Yb
and Gd were prepared using the hydro-evaporation synthesis. Magnetization of
polycrystalline samples in powder form was investigated in a broad temperature
range of 2–900 K. Splitting between the zero field cooled (ZFC) and field cooled
(FC) magnetization curves indicate development of the weak ferromagnetism below
the Néel temperature of around 610–640 K which is dependent on the composition.
Magnetic hysteresis loops measured at the low temperature (5 K), room temperature,
and high temperatures, just under and above transition temperature, also suggest the
weak ferromagnetic behavior with relatively high coercive field.
Complete magnetic results in full temperature range (2–900 K) clearly indicate
enhancement of the weak ferromagnetism after performed substitution with rare
earth elements La, Yb and Gd in bulk BiFeO3 ceramic.",
publisher = "Institut za multidisciplinarna istraživanja, Kneza Višeslava 1, 11000 Belgrade, Serbia",
journal = "4th Conference of the Serbian Society for Ceranic Materials, June 14-16, 2017, Belgrade, Serbia, 4CSCS-2017",
title = "Influence of La, Yb and Gd substitution on magnetic behaviour of bulk BiFeO3",
pages = "106",
url = "https://hdl.handle.net/21.15107/rcub_rimsi_2384"
}

Šenjug, P., Torić, F., Dragović, J., Pajić, D., Luković Golić, D., Radojković, A., Ćirković, J.,& Branković, G.. (2017). Influence of La, Yb and Gd substitution on magnetic behaviour of bulk BiFeO3. in 4th Conference of the Serbian Society for Ceranic Materials, June 14-16, 2017, Belgrade, Serbia, 4CSCS-2017
Institut za multidisciplinarna istraživanja, Kneza Višeslava 1, 11000 Belgrade, Serbia., 106.
https://hdl.handle.net/21.15107/rcub_rimsi_2384

Šenjug P, Torić F, Dragović J, Pajić D, Luković Golić D, Radojković A, Ćirković J, Branković G. Influence of La, Yb and Gd substitution on magnetic behaviour of bulk BiFeO3. in 4th Conference of the Serbian Society for Ceranic Materials, June 14-16, 2017, Belgrade, Serbia, 4CSCS-2017. 2017;:106.
https://hdl.handle.net/21.15107/rcub_rimsi_2384 .

Šenjug, Pavla, Torić, Filip, Dragović, Jure, Pajić, Damir, Luković Golić, Danijela, Radojković, Aleksandar, Ćirković, Jovana, Branković, Goran, "Influence of La, Yb and Gd substitution on magnetic behaviour of bulk BiFeO3" in 4th Conference of the Serbian Society for Ceranic Materials, June 14-16, 2017, Belgrade, Serbia, 4CSCS-2017 (2017):106,
https://hdl.handle.net/21.15107/rcub_rimsi_2384 .