Dielectric and ferroelectric properties of Ho-doped BiFeO3 nanopowders across the structural phase transition
Само за регистроване кориснике
2017
Аутори
Stojadinović, BojanDohčević-Mitrović, Zorana
Stepanenko, Dimitrije
Rosić, Milena
Petronijević, Ivan M.
Tasić, Nikola B.
Ilić, Nikola
Matović, Branko
Stojanovic, Biljana
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
We have studied Ho-doped BiFeO3 nanopowders (Bi1-xHoxFeO3, x = 0-0.15), prepared via sol-gel method, in order to analyse the effect of substitution-driven structural transition on dielectric and ferroelectric properties of bismuth ferrite. X-ray diffraction and Raman study demonstrated that an increased Ho concentration (x GT = 0.1) has induced gradual phase transition from rhombohedral to orthorhombic phase. The frequency dependent permittivity of Bi1-xHoxFeO3 nanopowders was analysed within a model which incorporates Debye-like dielectric response and dc and ac conductivity contributions based on universal dielectric response. It was shown that influence of leakage current and grain boundary/interface effects on dielectric and ferroelectric properties was substantially reduced in biphasic Bi1-xHoxFeO3 (x GT 0.1) samples. The electrical performance of Bi0.85Ho0.15FeO3 sample, for which orthorhombic phase prevailed, was significantly improved and Bi0.85Ho0.15FeO3 has sustained strong a...pplied electric fields (up to 100 kV/cm) without breakdown. Under strong external fields, the polarization exhibited strong frequency dependence. The low-frequency remnant polarization and coercive field of Bi0.85Ho0.15FeO3 were significantly enhanced. It was proposed that defect dipolar polarization substantially contributed to the intrinsic polarization of Bi0.85Ho0.15FeO3 under strong electric fields at low frequencies.
Кључне речи:
Sol-gel processes / X-ray methods / Dielectric properties / Ferroelectric properties / PerovskitesИзвор:
Ceramics International, 2017, 43, 18, 16531-16538Финансирање / пројекти:
- Физика наноструктурних оксидних материјала и јако корелисаних система (RS-MESTD-Basic Research (BR or ON)-171032)
- Наноструктурни мултифункционални материјали и нанокомпозити (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45018)
DOI: 10.1016/j.ceramint.2017.09.038
ISSN: 0272-8842; 1873-3956
WoS: 000414106600070
Scopus: 2-s2.0-85028974358
Колекције
Институција/група
VinčaTY - JOUR AU - Stojadinović, Bojan AU - Dohčević-Mitrović, Zorana AU - Stepanenko, Dimitrije AU - Rosić, Milena AU - Petronijević, Ivan M. AU - Tasić, Nikola B. AU - Ilić, Nikola AU - Matović, Branko AU - Stojanovic, Biljana PY - 2017 UR - https://vinar.vin.bg.ac.rs/handle/123456789/1804 AB - We have studied Ho-doped BiFeO3 nanopowders (Bi1-xHoxFeO3, x = 0-0.15), prepared via sol-gel method, in order to analyse the effect of substitution-driven structural transition on dielectric and ferroelectric properties of bismuth ferrite. X-ray diffraction and Raman study demonstrated that an increased Ho concentration (x GT = 0.1) has induced gradual phase transition from rhombohedral to orthorhombic phase. The frequency dependent permittivity of Bi1-xHoxFeO3 nanopowders was analysed within a model which incorporates Debye-like dielectric response and dc and ac conductivity contributions based on universal dielectric response. It was shown that influence of leakage current and grain boundary/interface effects on dielectric and ferroelectric properties was substantially reduced in biphasic Bi1-xHoxFeO3 (x GT 0.1) samples. The electrical performance of Bi0.85Ho0.15FeO3 sample, for which orthorhombic phase prevailed, was significantly improved and Bi0.85Ho0.15FeO3 has sustained strong applied electric fields (up to 100 kV/cm) without breakdown. Under strong external fields, the polarization exhibited strong frequency dependence. The low-frequency remnant polarization and coercive field of Bi0.85Ho0.15FeO3 were significantly enhanced. It was proposed that defect dipolar polarization substantially contributed to the intrinsic polarization of Bi0.85Ho0.15FeO3 under strong electric fields at low frequencies. T2 - Ceramics International T1 - Dielectric and ferroelectric properties of Ho-doped BiFeO3 nanopowders across the structural phase transition VL - 43 IS - 18 SP - 16531 EP - 16538 DO - 10.1016/j.ceramint.2017.09.038 ER -
@article{ author = "Stojadinović, Bojan and Dohčević-Mitrović, Zorana and Stepanenko, Dimitrije and Rosić, Milena and Petronijević, Ivan M. and Tasić, Nikola B. and Ilić, Nikola and Matović, Branko and Stojanovic, Biljana", year = "2017", abstract = "We have studied Ho-doped BiFeO3 nanopowders (Bi1-xHoxFeO3, x = 0-0.15), prepared via sol-gel method, in order to analyse the effect of substitution-driven structural transition on dielectric and ferroelectric properties of bismuth ferrite. X-ray diffraction and Raman study demonstrated that an increased Ho concentration (x GT = 0.1) has induced gradual phase transition from rhombohedral to orthorhombic phase. The frequency dependent permittivity of Bi1-xHoxFeO3 nanopowders was analysed within a model which incorporates Debye-like dielectric response and dc and ac conductivity contributions based on universal dielectric response. It was shown that influence of leakage current and grain boundary/interface effects on dielectric and ferroelectric properties was substantially reduced in biphasic Bi1-xHoxFeO3 (x GT 0.1) samples. The electrical performance of Bi0.85Ho0.15FeO3 sample, for which orthorhombic phase prevailed, was significantly improved and Bi0.85Ho0.15FeO3 has sustained strong applied electric fields (up to 100 kV/cm) without breakdown. Under strong external fields, the polarization exhibited strong frequency dependence. The low-frequency remnant polarization and coercive field of Bi0.85Ho0.15FeO3 were significantly enhanced. It was proposed that defect dipolar polarization substantially contributed to the intrinsic polarization of Bi0.85Ho0.15FeO3 under strong electric fields at low frequencies.", journal = "Ceramics International", title = "Dielectric and ferroelectric properties of Ho-doped BiFeO3 nanopowders across the structural phase transition", volume = "43", number = "18", pages = "16531-16538", doi = "10.1016/j.ceramint.2017.09.038" }
Stojadinović, B., Dohčević-Mitrović, Z., Stepanenko, D., Rosić, M., Petronijević, I. M., Tasić, N. B., Ilić, N., Matović, B.,& Stojanovic, B.. (2017). Dielectric and ferroelectric properties of Ho-doped BiFeO3 nanopowders across the structural phase transition. in Ceramics International, 43(18), 16531-16538. https://doi.org/10.1016/j.ceramint.2017.09.038
Stojadinović B, Dohčević-Mitrović Z, Stepanenko D, Rosić M, Petronijević IM, Tasić NB, Ilić N, Matović B, Stojanovic B. Dielectric and ferroelectric properties of Ho-doped BiFeO3 nanopowders across the structural phase transition. in Ceramics International. 2017;43(18):16531-16538. doi:10.1016/j.ceramint.2017.09.038 .
Stojadinović, Bojan, Dohčević-Mitrović, Zorana , Stepanenko, Dimitrije, Rosić, Milena, Petronijević, Ivan M., Tasić, Nikola B., Ilić, Nikola, Matović, Branko, Stojanovic, Biljana, "Dielectric and ferroelectric properties of Ho-doped BiFeO3 nanopowders across the structural phase transition" in Ceramics International, 43, no. 18 (2017):16531-16538, https://doi.org/10.1016/j.ceramint.2017.09.038 . .