Ferreira Teixeira, Guilhermina

Link to this page

Authority KeyName Variants
9be1edb3-b92f-4384-9c62-7b966786f1f8
  • Ferreira Teixeira, Guilhermina (5)
Projects

Author's Bibliography

FUNCTIONAL PROPERTIES OF PVDF-BASED NZF-BT FLEXIBLE FILMS

Grigalaitis, Robertas; Salasevicius, R.; Banys, Juras; Vijatović Petrović, Mirjana; Džunuzović, Adis; ZAGHETE, MARIA; Ferreira Teixeira, Guilhermina; Stojanović, Biljana D

(Lietuvos mokslų akademija, 2022)

TY  - JOUR
AU  - Grigalaitis, Robertas
AU  - Salasevicius, R.
AU  - Banys, Juras
AU  - Vijatović Petrović, Mirjana
AU  - Džunuzović, Adis
AU  - ZAGHETE, MARIA
AU  - Ferreira Teixeira, Guilhermina
AU  - Stojanović, Biljana D
PY  - 2022
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/2104
AB  - Flexible multiferroic composite films are perspective materials for sensors, actuators and similar com-ponents of wearable and stretchable devices. Here we present the study of functional properties of flexible composites prepared by embedding nickel zinc ferrite and barium titanate powder into polyvinylidene fluo-ride (PVDF) polymer optimizing the ratio of polymer and fillers to get the best flexibility and functionality. ATR-FTIR analysis revealed that hot pressing of the flexible films causeda transformation of about 38% of the electro-inactive PVDF α phase into electrically active β and γ phases. Broadband dielectric spectroscopy revealed two relaxation processes responsible for PVDF and space charge relaxations. Activation energies of  both  processes  and  the  freezing  temperature  of  PVDF  to  the  glass  phase  were  estimated  for  all  films.  Ferroelectric  measurements  have  shown  unsaturated  hysteresis  loops  for  all  samples,  although  the  clear  dependence of the amount of the electrically active phase on polarization values of composites is visible.
PB  - Lietuvos mokslų akademija
T2  - Lithuanian Journal of Physics
T1  - FUNCTIONAL PROPERTIES OF PVDF-BASED NZF-BT FLEXIBLE FILMS
EP  - 204
IS  - 4
SP  - 195
VL  - 62
DO  - 10.3952/physics.v62i4.4825
ER  - 
@article{
author = "Grigalaitis, Robertas and Salasevicius, R. and Banys, Juras and Vijatović Petrović, Mirjana and Džunuzović, Adis and ZAGHETE, MARIA and Ferreira Teixeira, Guilhermina and Stojanović, Biljana D",
year = "2022",
abstract = "Flexible multiferroic composite films are perspective materials for sensors, actuators and similar com-ponents of wearable and stretchable devices. Here we present the study of functional properties of flexible composites prepared by embedding nickel zinc ferrite and barium titanate powder into polyvinylidene fluo-ride (PVDF) polymer optimizing the ratio of polymer and fillers to get the best flexibility and functionality. ATR-FTIR analysis revealed that hot pressing of the flexible films causeda transformation of about 38% of the electro-inactive PVDF α phase into electrically active β and γ phases. Broadband dielectric spectroscopy revealed two relaxation processes responsible for PVDF and space charge relaxations. Activation energies of  both  processes  and  the  freezing  temperature  of  PVDF  to  the  glass  phase  were  estimated  for  all  films.  Ferroelectric  measurements  have  shown  unsaturated  hysteresis  loops  for  all  samples,  although  the  clear  dependence of the amount of the electrically active phase on polarization values of composites is visible.",
publisher = "Lietuvos mokslų akademija",
journal = "Lithuanian Journal of Physics",
title = "FUNCTIONAL PROPERTIES OF PVDF-BASED NZF-BT FLEXIBLE FILMS",
pages = "204-195",
number = "4",
volume = "62",
doi = "10.3952/physics.v62i4.4825"
}
Grigalaitis, R., Salasevicius, R., Banys, J., Vijatović Petrović, M., Džunuzović, A., ZAGHETE, M., Ferreira Teixeira, G.,& Stojanović, B. D.. (2022). FUNCTIONAL PROPERTIES OF PVDF-BASED NZF-BT FLEXIBLE FILMS. in Lithuanian Journal of Physics
Lietuvos mokslų akademija., 62(4), 195-204.
https://doi.org/10.3952/physics.v62i4.4825
Grigalaitis R, Salasevicius R, Banys J, Vijatović Petrović M, Džunuzović A, ZAGHETE M, Ferreira Teixeira G, Stojanović BD. FUNCTIONAL PROPERTIES OF PVDF-BASED NZF-BT FLEXIBLE FILMS. in Lithuanian Journal of Physics. 2022;62(4):195-204.
doi:10.3952/physics.v62i4.4825 .
Grigalaitis, Robertas, Salasevicius, R., Banys, Juras, Vijatović Petrović, Mirjana, Džunuzović, Adis, ZAGHETE, MARIA, Ferreira Teixeira, Guilhermina, Stojanović, Biljana D, "FUNCTIONAL PROPERTIES OF PVDF-BASED NZF-BT FLEXIBLE FILMS" in Lithuanian Journal of Physics, 62, no. 4 (2022):195-204,
https://doi.org/10.3952/physics.v62i4.4825 . .

MECHANICAL ENERGY HARVESTING POTENTIAL OF BiFeO3-PVDF FLEXIBLE COMPOSITES

Ilić, Nikola; Vijatović Petrović, Mirjana; Despotovic, Zeljko V.; Bobić, Jelena; Džunuzović, Adis; Ferreira Teixeira, Guilhermina

(Faculty of Technology, University of Novi Sad, 2021)

TY  - CONF
AU  - Ilić, Nikola
AU  - Vijatović Petrović, Mirjana
AU  - Despotovic, Zeljko V.
AU  - Bobić, Jelena
AU  - Džunuzović, Adis
AU  - Ferreira Teixeira, Guilhermina
PY  - 2021
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/2457
AB  - Bismuth ferrite (BiFeO3) powders were synthesized by sol-gel methods and incorporated into flexible composites by hot pressing with polyvinylidene fluoride (α-PVDF). Several metal ions with various valances were used to dope BiFeO3 in order to examine their influence on electrical properties. XRD characterization confirmed that almost all of the dopants incorporated very well into the perovskite structure. Microstructural study showed that the composites are homogeneous with thickness of 50 to 140 μm. Dielectric, impedance and ferroelectric properties of composite samples showed that all of the dopants even those with smaller valence than the ions they substitute enhance the capability to handle the electric field. α-PVDF matrix also helped in preventing electrical breakdown comparing to BiFeO3 ceramics, which is usually susceptible to high leakage. Flexible composites were subjected to impact piezoelectric test with the idea to study their potential to collect mechanical energy from the surrounding vibrations.
PB  - Faculty of Technology, University of Novi Sad
C3  - 14th ECerS Conference for Young Scientists in Ceramics, CYSC-2021 Novi Sad, Serbia, October 20-23, 2021
T1  - MECHANICAL ENERGY HARVESTING POTENTIAL OF BiFeO3-PVDF FLEXIBLE COMPOSITES
UR  - https://hdl.handle.net/21.15107/rcub_rimsi_2457
ER  - 
@conference{
author = "Ilić, Nikola and Vijatović Petrović, Mirjana and Despotovic, Zeljko V. and Bobić, Jelena and Džunuzović, Adis and Ferreira Teixeira, Guilhermina",
year = "2021",
abstract = "Bismuth ferrite (BiFeO3) powders were synthesized by sol-gel methods and incorporated into flexible composites by hot pressing with polyvinylidene fluoride (α-PVDF). Several metal ions with various valances were used to dope BiFeO3 in order to examine their influence on electrical properties. XRD characterization confirmed that almost all of the dopants incorporated very well into the perovskite structure. Microstructural study showed that the composites are homogeneous with thickness of 50 to 140 μm. Dielectric, impedance and ferroelectric properties of composite samples showed that all of the dopants even those with smaller valence than the ions they substitute enhance the capability to handle the electric field. α-PVDF matrix also helped in preventing electrical breakdown comparing to BiFeO3 ceramics, which is usually susceptible to high leakage. Flexible composites were subjected to impact piezoelectric test with the idea to study their potential to collect mechanical energy from the surrounding vibrations.",
publisher = "Faculty of Technology, University of Novi Sad",
journal = "14th ECerS Conference for Young Scientists in Ceramics, CYSC-2021 Novi Sad, Serbia, October 20-23, 2021",
title = "MECHANICAL ENERGY HARVESTING POTENTIAL OF BiFeO3-PVDF FLEXIBLE COMPOSITES",
url = "https://hdl.handle.net/21.15107/rcub_rimsi_2457"
}
Ilić, N., Vijatović Petrović, M., Despotovic, Z. V., Bobić, J., Džunuzović, A.,& Ferreira Teixeira, G.. (2021). MECHANICAL ENERGY HARVESTING POTENTIAL OF BiFeO3-PVDF FLEXIBLE COMPOSITES. in 14th ECerS Conference for Young Scientists in Ceramics, CYSC-2021 Novi Sad, Serbia, October 20-23, 2021
Faculty of Technology, University of Novi Sad..
https://hdl.handle.net/21.15107/rcub_rimsi_2457
Ilić N, Vijatović Petrović M, Despotovic ZV, Bobić J, Džunuzović A, Ferreira Teixeira G. MECHANICAL ENERGY HARVESTING POTENTIAL OF BiFeO3-PVDF FLEXIBLE COMPOSITES. in 14th ECerS Conference for Young Scientists in Ceramics, CYSC-2021 Novi Sad, Serbia, October 20-23, 2021. 2021;.
https://hdl.handle.net/21.15107/rcub_rimsi_2457 .
Ilić, Nikola, Vijatović Petrović, Mirjana, Despotovic, Zeljko V., Bobić, Jelena, Džunuzović, Adis, Ferreira Teixeira, Guilhermina, "MECHANICAL ENERGY HARVESTING POTENTIAL OF BiFeO3-PVDF FLEXIBLE COMPOSITES" in 14th ECerS Conference for Young Scientists in Ceramics, CYSC-2021 Novi Sad, Serbia, October 20-23, 2021 (2021),
https://hdl.handle.net/21.15107/rcub_rimsi_2457 .

Electrical and magnetic properties of multiferroic BiFeO3-based flexible composites

Ilić, Nikola; Ferreira Teixeira, Guilhermina; Bobić, Jelena; Vijatović Petrović, Mirjana; Džunuzović, Adis; ZAGHETE, MARIA; Stojanović, Biljana

(Materials Research Society of Serbia Knez Mihailova 35/IV, P.O.Box 433, 11000 Belgrade, Serbia Phone: +381 11 2185-437 http://www.mrs-serbia.org.rs, 2018)

TY  - CONF
AU  - Ilić, Nikola
AU  - Ferreira Teixeira, Guilhermina
AU  - Bobić, Jelena
AU  - Vijatović Petrović, Mirjana
AU  - Džunuzović, Adis
AU  - ZAGHETE, MARIA
AU  - Stojanović, Biljana
PY  - 2018
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/2589
AB  - Flexible composite samples were prepared by hot pressing of BiFeO3 powders prepared by
chemical methods with polyvinylidene fluoride (PVDF). Role of PVDF is not only to make the
samples flexible, but also to improve the properties of BiFeO3, primarily to prevent the problems
with high density of leakage currents. Microstructure of composites showed good homogeneity
and uniform thickness of around 50 μm. Dielectric, impedance, ferroelectric and ferromagnetic
properties of composite samples were studied and compared with those of BiFeO3 powders or
ceramic samples. Flexible samples exhibited improved electrical resistivity, which enables them
to withstand significantly higher electric fields and to be weakly polarized. By eliminating the
sintering step, it is possible to retain weak ferromagnetism originating from Fe3O4 nanoparticles
formed during the synthesis in compact samples.
Acknowledgement: The authors would like to acknowledge the financial support of the Ministry
of Education, Science and Technological development of the republic of Serbia, Project no. III
45021 and the Brazilian research agencies CAPES, CNPq, and FAPESP-CEPID/CDMF
2013/07296-2.
PB  - Materials Research Society of Serbia Knez Mihailova 35/IV, P.O.Box 433, 11000 Belgrade, Serbia Phone: +381 11 2185-437 http://www.mrs-serbia.org.rs
C3  - TWENTIETH ANNUAL CONFERENCE YUCOMAT 2018 Herceg Novi, September 3-7, 2018
T1  - Electrical and magnetic properties of multiferroic BiFeO3-based flexible composites
UR  - https://hdl.handle.net/21.15107/rcub_rimsi_2589
ER  - 
@conference{
author = "Ilić, Nikola and Ferreira Teixeira, Guilhermina and Bobić, Jelena and Vijatović Petrović, Mirjana and Džunuzović, Adis and ZAGHETE, MARIA and Stojanović, Biljana",
year = "2018",
abstract = "Flexible composite samples were prepared by hot pressing of BiFeO3 powders prepared by
chemical methods with polyvinylidene fluoride (PVDF). Role of PVDF is not only to make the
samples flexible, but also to improve the properties of BiFeO3, primarily to prevent the problems
with high density of leakage currents. Microstructure of composites showed good homogeneity
and uniform thickness of around 50 μm. Dielectric, impedance, ferroelectric and ferromagnetic
properties of composite samples were studied and compared with those of BiFeO3 powders or
ceramic samples. Flexible samples exhibited improved electrical resistivity, which enables them
to withstand significantly higher electric fields and to be weakly polarized. By eliminating the
sintering step, it is possible to retain weak ferromagnetism originating from Fe3O4 nanoparticles
formed during the synthesis in compact samples.
Acknowledgement: The authors would like to acknowledge the financial support of the Ministry
of Education, Science and Technological development of the republic of Serbia, Project no. III
45021 and the Brazilian research agencies CAPES, CNPq, and FAPESP-CEPID/CDMF
2013/07296-2.",
publisher = "Materials Research Society of Serbia Knez Mihailova 35/IV, P.O.Box 433, 11000 Belgrade, Serbia Phone: +381 11 2185-437 http://www.mrs-serbia.org.rs",
journal = "TWENTIETH ANNUAL CONFERENCE YUCOMAT 2018 Herceg Novi, September 3-7, 2018",
title = "Electrical and magnetic properties of multiferroic BiFeO3-based flexible composites",
url = "https://hdl.handle.net/21.15107/rcub_rimsi_2589"
}
Ilić, N., Ferreira Teixeira, G., Bobić, J., Vijatović Petrović, M., Džunuzović, A., ZAGHETE, M.,& Stojanović, B.. (2018). Electrical and magnetic properties of multiferroic BiFeO3-based flexible composites. in TWENTIETH ANNUAL CONFERENCE YUCOMAT 2018 Herceg Novi, September 3-7, 2018
Materials Research Society of Serbia Knez Mihailova 35/IV, P.O.Box 433, 11000 Belgrade, Serbia Phone: +381 11 2185-437 http://www.mrs-serbia.org.rs..
https://hdl.handle.net/21.15107/rcub_rimsi_2589
Ilić N, Ferreira Teixeira G, Bobić J, Vijatović Petrović M, Džunuzović A, ZAGHETE M, Stojanović B. Electrical and magnetic properties of multiferroic BiFeO3-based flexible composites. in TWENTIETH ANNUAL CONFERENCE YUCOMAT 2018 Herceg Novi, September 3-7, 2018. 2018;.
https://hdl.handle.net/21.15107/rcub_rimsi_2589 .
Ilić, Nikola, Ferreira Teixeira, Guilhermina, Bobić, Jelena, Vijatović Petrović, Mirjana, Džunuzović, Adis, ZAGHETE, MARIA, Stojanović, Biljana, "Electrical and magnetic properties of multiferroic BiFeO3-based flexible composites" in TWENTIETH ANNUAL CONFERENCE YUCOMAT 2018 Herceg Novi, September 3-7, 2018 (2018),
https://hdl.handle.net/21.15107/rcub_rimsi_2589 .

BiFeO3 THIN FILMS: INFLUENCE OF DOPING ON STRUCTURE AND PROPRETIES

Ilić, Nikola; Amoresi, R.C.; Zanetti, S.M.; Spasojevic, Vojislav; Ferreira Teixeira, Guilhermina; Bobić, Jelena; ZAGHETE, MARIA; Stojanović, Biljana

(Faculty of Technology, University of Novi Sad Bul. cara Lazara 1, 21000 Novi Sad, Serbia, 2017)

TY  - CONF
AU  - Ilić, Nikola
AU  - Amoresi, R.C.
AU  - Zanetti, S.M.
AU  - Spasojevic, Vojislav
AU  - Ferreira Teixeira, Guilhermina
AU  - Bobić, Jelena
AU  - ZAGHETE, MARIA
AU  - Stojanović, Biljana
PY  - 2017
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/2603
AB  - Thin films of BiFeO3 and doped BiFeO3 were prepared by chemical solution deposition method. Because of low electrical resistivity of BiFeO3 which often prevents it to exhibit ferroelectric properties, several elements were used as dopants, partially replacing Bi3+ (Y3+, Sr2+) or Fe3+ (Ti4+, Zr4+) ions. Dopants may also reduce the size of the grains improving the magnetic properties.
Pure BiFeO3 phase was formed for all compositions without preferred orientation. All films are around 300 nm thick, with relatively densely packed round grains of the size well below 100 nm as it is presented with micrographies in Fig. 1. Some of the dopants have lowered the size of the grains and increased electrical resistivity enough for ferroelectric hysteresis to be measured at fields above 100 kV/cm
PB  - Faculty of Technology, University of Novi Sad Bul. cara Lazara 1, 21000 Novi Sad, Serbia
C3  - 12th Conference for young scientists in ceramics, October 18-21, 2017, Novi Sad
T1  - BiFeO3 THIN FILMS: INFLUENCE OF DOPING ON STRUCTURE AND PROPRETIES
UR  - https://hdl.handle.net/21.15107/rcub_rimsi_2603
ER  - 
@conference{
author = "Ilić, Nikola and Amoresi, R.C. and Zanetti, S.M. and Spasojevic, Vojislav and Ferreira Teixeira, Guilhermina and Bobić, Jelena and ZAGHETE, MARIA and Stojanović, Biljana",
year = "2017",
abstract = "Thin films of BiFeO3 and doped BiFeO3 were prepared by chemical solution deposition method. Because of low electrical resistivity of BiFeO3 which often prevents it to exhibit ferroelectric properties, several elements were used as dopants, partially replacing Bi3+ (Y3+, Sr2+) or Fe3+ (Ti4+, Zr4+) ions. Dopants may also reduce the size of the grains improving the magnetic properties.
Pure BiFeO3 phase was formed for all compositions without preferred orientation. All films are around 300 nm thick, with relatively densely packed round grains of the size well below 100 nm as it is presented with micrographies in Fig. 1. Some of the dopants have lowered the size of the grains and increased electrical resistivity enough for ferroelectric hysteresis to be measured at fields above 100 kV/cm",
publisher = "Faculty of Technology, University of Novi Sad Bul. cara Lazara 1, 21000 Novi Sad, Serbia",
journal = "12th Conference for young scientists in ceramics, October 18-21, 2017, Novi Sad",
title = "BiFeO3 THIN FILMS: INFLUENCE OF DOPING ON STRUCTURE AND PROPRETIES",
url = "https://hdl.handle.net/21.15107/rcub_rimsi_2603"
}
Ilić, N., Amoresi, R.C., Zanetti, S.M., Spasojevic, V., Ferreira Teixeira, G., Bobić, J., ZAGHETE, M.,& Stojanović, B.. (2017). BiFeO3 THIN FILMS: INFLUENCE OF DOPING ON STRUCTURE AND PROPRETIES. in 12th Conference for young scientists in ceramics, October 18-21, 2017, Novi Sad
Faculty of Technology, University of Novi Sad Bul. cara Lazara 1, 21000 Novi Sad, Serbia..
https://hdl.handle.net/21.15107/rcub_rimsi_2603
Ilić N, Amoresi R, Zanetti S, Spasojevic V, Ferreira Teixeira G, Bobić J, ZAGHETE M, Stojanović B. BiFeO3 THIN FILMS: INFLUENCE OF DOPING ON STRUCTURE AND PROPRETIES. in 12th Conference for young scientists in ceramics, October 18-21, 2017, Novi Sad. 2017;.
https://hdl.handle.net/21.15107/rcub_rimsi_2603 .
Ilić, Nikola, Amoresi, R.C., Zanetti, S.M., Spasojevic, Vojislav, Ferreira Teixeira, Guilhermina, Bobić, Jelena, ZAGHETE, MARIA, Stojanović, Biljana, "BiFeO3 THIN FILMS: INFLUENCE OF DOPING ON STRUCTURE AND PROPRETIES" in 12th Conference for young scientists in ceramics, October 18-21, 2017, Novi Sad (2017),
https://hdl.handle.net/21.15107/rcub_rimsi_2603 .

STRUCTURAL AND PHOTOLUMINESCENCE PROPERTIES OF THE (Ni,Zn) Fe2O4-BaTiO3 MULTIFERROIC COMPOSITE NANOPOWDERS

Ferreira Teixeira, Guilhermina; Džunuzović, Adis; Lustosa, G.M.M.M.; Amoresi, R.C.; Vijatović Petrović, Mirjana; ZAGHETE, MARIA; Stojanović, Biljana

(Faculty of Technology, University of Novi Sad Bul. cara Lazara 1, 21000 Novi Sad, Serbia, 2017)

TY  - CONF
AU  - Ferreira Teixeira, Guilhermina
AU  - Džunuzović, Adis
AU  - Lustosa, G.M.M.M.
AU  - Amoresi, R.C.
AU  - Vijatović Petrović, Mirjana
AU  - ZAGHETE, MARIA
AU  - Stojanović, Biljana
PY  - 2017
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/2614
AB  - Ferroics and multiferroics are among the most attractive multifunctional materials. In recent years, multiferroic composite consisted of two or more ferroic orders, such as ferroelectric, ferromagnetic, or ferroelastic, in which coupling between these phases can produce magnetoelectric effect, has been drawing significant attention. Besides others, (Ni, Zn)Fe2O4-BaTiO3 composites have attracted considerable attention not only due to fundamental research of magneto-electric effect, but also for the potential applications in many electronic devices such as drug delivery, heterogeneous catalysis, levitated railway system, magnetic-refrigeration, microwave devices, antennas, memory devices, etc. In this composite, (Ni,Zn)Fe2O4(NZF) possesses magnetic behavior, and the ferroelectricity is due to the presence of BaTiO3 (BT). In the present work, it was investigated the structural and photoluminiscence properties of NZF-BT composite nanopowders prepared by auto-combution method and the different ratio of NZF/BT was explored. XRD indicated well cristallized powders but with small presence of secondary phases respecting to BT. By FE-SEM analyses was noticed the agglomerates with wide particles size distribution, as well as the difference of the particles morphology between (Ni,Zn)Fe2O4 and BaTiO3. FT-IR spectra display interactions between metal-oxygen around 500-600 cm-1. The different ratio of NZF/BT effects on the optical band gap values indicating the formation of intermediary levels modifying the Fermi level. Photoluminescence (PL) analysis provides important information about the materials structures, however the PL behavior of these composites is not very well known. The presence of PL emission suggests that the structures of the materials are medium range disordered. All samples showed a broad band emission centered around 450 nm, being a region characteristic of resultant emission from the presence of shallow defects in materials structures. This behavior is reinforced by deconvolution of PL bands, which shows the contribution of tree sub bands to emission (blue, green and yellow emission), being that the largest area of spectra is occupied by a band correspondent to blue emission.
PB  - Faculty of Technology, University of Novi Sad Bul. cara Lazara 1, 21000 Novi Sad, Serbia
C3  - 12th Conference for Young Scientists in Ceramics, CYSC-2017 Novi Sad, Serbia, October 18-21, 2017
T1  - STRUCTURAL AND PHOTOLUMINESCENCE PROPERTIES OF THE (Ni,Zn) Fe2O4-BaTiO3 MULTIFERROIC COMPOSITE NANOPOWDERS
UR  - https://hdl.handle.net/21.15107/rcub_rimsi_2614
ER  - 
@conference{
author = "Ferreira Teixeira, Guilhermina and Džunuzović, Adis and Lustosa, G.M.M.M. and Amoresi, R.C. and Vijatović Petrović, Mirjana and ZAGHETE, MARIA and Stojanović, Biljana",
year = "2017",
abstract = "Ferroics and multiferroics are among the most attractive multifunctional materials. In recent years, multiferroic composite consisted of two or more ferroic orders, such as ferroelectric, ferromagnetic, or ferroelastic, in which coupling between these phases can produce magnetoelectric effect, has been drawing significant attention. Besides others, (Ni, Zn)Fe2O4-BaTiO3 composites have attracted considerable attention not only due to fundamental research of magneto-electric effect, but also for the potential applications in many electronic devices such as drug delivery, heterogeneous catalysis, levitated railway system, magnetic-refrigeration, microwave devices, antennas, memory devices, etc. In this composite, (Ni,Zn)Fe2O4(NZF) possesses magnetic behavior, and the ferroelectricity is due to the presence of BaTiO3 (BT). In the present work, it was investigated the structural and photoluminiscence properties of NZF-BT composite nanopowders prepared by auto-combution method and the different ratio of NZF/BT was explored. XRD indicated well cristallized powders but with small presence of secondary phases respecting to BT. By FE-SEM analyses was noticed the agglomerates with wide particles size distribution, as well as the difference of the particles morphology between (Ni,Zn)Fe2O4 and BaTiO3. FT-IR spectra display interactions between metal-oxygen around 500-600 cm-1. The different ratio of NZF/BT effects on the optical band gap values indicating the formation of intermediary levels modifying the Fermi level. Photoluminescence (PL) analysis provides important information about the materials structures, however the PL behavior of these composites is not very well known. The presence of PL emission suggests that the structures of the materials are medium range disordered. All samples showed a broad band emission centered around 450 nm, being a region characteristic of resultant emission from the presence of shallow defects in materials structures. This behavior is reinforced by deconvolution of PL bands, which shows the contribution of tree sub bands to emission (blue, green and yellow emission), being that the largest area of spectra is occupied by a band correspondent to blue emission.",
publisher = "Faculty of Technology, University of Novi Sad Bul. cara Lazara 1, 21000 Novi Sad, Serbia",
journal = "12th Conference for Young Scientists in Ceramics, CYSC-2017 Novi Sad, Serbia, October 18-21, 2017",
title = "STRUCTURAL AND PHOTOLUMINESCENCE PROPERTIES OF THE (Ni,Zn) Fe2O4-BaTiO3 MULTIFERROIC COMPOSITE NANOPOWDERS",
url = "https://hdl.handle.net/21.15107/rcub_rimsi_2614"
}
Ferreira Teixeira, G., Džunuzović, A., Lustosa, G.M.M.M., Amoresi, R.C., Vijatović Petrović, M., ZAGHETE, M.,& Stojanović, B.. (2017). STRUCTURAL AND PHOTOLUMINESCENCE PROPERTIES OF THE (Ni,Zn) Fe2O4-BaTiO3 MULTIFERROIC COMPOSITE NANOPOWDERS. in 12th Conference for Young Scientists in Ceramics, CYSC-2017 Novi Sad, Serbia, October 18-21, 2017
Faculty of Technology, University of Novi Sad Bul. cara Lazara 1, 21000 Novi Sad, Serbia..
https://hdl.handle.net/21.15107/rcub_rimsi_2614
Ferreira Teixeira G, Džunuzović A, Lustosa G, Amoresi R, Vijatović Petrović M, ZAGHETE M, Stojanović B. STRUCTURAL AND PHOTOLUMINESCENCE PROPERTIES OF THE (Ni,Zn) Fe2O4-BaTiO3 MULTIFERROIC COMPOSITE NANOPOWDERS. in 12th Conference for Young Scientists in Ceramics, CYSC-2017 Novi Sad, Serbia, October 18-21, 2017. 2017;.
https://hdl.handle.net/21.15107/rcub_rimsi_2614 .
Ferreira Teixeira, Guilhermina, Džunuzović, Adis, Lustosa, G.M.M.M., Amoresi, R.C., Vijatović Petrović, Mirjana, ZAGHETE, MARIA, Stojanović, Biljana, "STRUCTURAL AND PHOTOLUMINESCENCE PROPERTIES OF THE (Ni,Zn) Fe2O4-BaTiO3 MULTIFERROIC COMPOSITE NANOPOWDERS" in 12th Conference for Young Scientists in Ceramics, CYSC-2017 Novi Sad, Serbia, October 18-21, 2017 (2017),
https://hdl.handle.net/21.15107/rcub_rimsi_2614 .