Influence of grinding, pressing and sintering of the powder 50.0 wt% Fe, 47.0 wt% BaTiO3 and 3.0 wt% TiO2 on morphology, microstructure, magnetic and electric properties
Нема приказа
Аутори
Luković, MilentijeSpasojević-Savković, Milica
Kosić, Olivera
Barudžija, Tanja
Lojpur, Vesna
Maričić, Aleksa
Spasojević, Miroslav
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
A mixture of 50.0 wt% Fe, 47.0 wt% BaTiO3, and 3.0 wt% TiO2 powders is milled and then pressed and sintered. Samples sintered from ground powders have a structure consisting of plates. They consist of the crystalline phase BaFe12O19 and crystalline and amorphous phases Fe, BaTiO3, and TiO2. Samples sintered from powders ground for more than 180 min are compact and composed of BaFe12O19 crystals embedded in an amorphous matrix consisting of amorphous BaTiO3 and TiO2 phases. Magnetization of a sample ground for 220 min gradually decreases with increasing temperature up to 440°C. This decrease result from the transition of ordered domains into chaotically directed domains. Above 440°C, the thermal energy is sufficiently large to destroy ordered paramagnetic ferromagnetic and weakly ferromagnetic domains. During sample cooling in the absence of an external magnetic field, the temperature dependence of magnetization is the same as that obtained during heating in the magnetic field. However,... during the sample cooling in the magnetic field, substantially higher values of magnetization are obtained. Considerably higher magnetization of the cooled sample remains even after switching off the external magnetic field. The sintered sample, previously pressed in the magnetic field, has a higher dielectric constant than the sample pressed in the absence of the magnetic field. The dielectric constant decreases with increasing frequency.
Кључне речи:
grinding / sintering / titanate / barium hexaferrite / magnetic propertiesИзвор:
Science of Sintering, 2023, InPress, 67-67Финансирање / пројекти:
- Министарство науке, технолошког развоја и иновација Републике Србије, институционално финансирање - 200288 (Иновациони центар Хемијског факултета у Београду доо) (RS-MESTD-inst-2020-200288)
Колекције
Институција/група
VinčaTY - JOUR AU - Luković, Milentije AU - Spasojević-Savković, Milica AU - Kosić, Olivera AU - Barudžija, Tanja AU - Lojpur, Vesna AU - Maričić, Aleksa AU - Spasojević, Miroslav PY - 2023 UR - https://vinar.vin.bg.ac.rs/handle/123456789/12841 AB - A mixture of 50.0 wt% Fe, 47.0 wt% BaTiO3, and 3.0 wt% TiO2 powders is milled and then pressed and sintered. Samples sintered from ground powders have a structure consisting of plates. They consist of the crystalline phase BaFe12O19 and crystalline and amorphous phases Fe, BaTiO3, and TiO2. Samples sintered from powders ground for more than 180 min are compact and composed of BaFe12O19 crystals embedded in an amorphous matrix consisting of amorphous BaTiO3 and TiO2 phases. Magnetization of a sample ground for 220 min gradually decreases with increasing temperature up to 440°C. This decrease result from the transition of ordered domains into chaotically directed domains. Above 440°C, the thermal energy is sufficiently large to destroy ordered paramagnetic ferromagnetic and weakly ferromagnetic domains. During sample cooling in the absence of an external magnetic field, the temperature dependence of magnetization is the same as that obtained during heating in the magnetic field. However, during the sample cooling in the magnetic field, substantially higher values of magnetization are obtained. Considerably higher magnetization of the cooled sample remains even after switching off the external magnetic field. The sintered sample, previously pressed in the magnetic field, has a higher dielectric constant than the sample pressed in the absence of the magnetic field. The dielectric constant decreases with increasing frequency. T2 - Science of Sintering T1 - Influence of grinding, pressing and sintering of the powder 50.0 wt% Fe, 47.0 wt% BaTiO3 and 3.0 wt% TiO2 on morphology, microstructure, magnetic and electric properties IS - InPress SP - 67 EP - 67 DO - 10.2298/SOS230915067L ER -
@article{ author = "Luković, Milentije and Spasojević-Savković, Milica and Kosić, Olivera and Barudžija, Tanja and Lojpur, Vesna and Maričić, Aleksa and Spasojević, Miroslav", year = "2023", abstract = "A mixture of 50.0 wt% Fe, 47.0 wt% BaTiO3, and 3.0 wt% TiO2 powders is milled and then pressed and sintered. Samples sintered from ground powders have a structure consisting of plates. They consist of the crystalline phase BaFe12O19 and crystalline and amorphous phases Fe, BaTiO3, and TiO2. Samples sintered from powders ground for more than 180 min are compact and composed of BaFe12O19 crystals embedded in an amorphous matrix consisting of amorphous BaTiO3 and TiO2 phases. Magnetization of a sample ground for 220 min gradually decreases with increasing temperature up to 440°C. This decrease result from the transition of ordered domains into chaotically directed domains. Above 440°C, the thermal energy is sufficiently large to destroy ordered paramagnetic ferromagnetic and weakly ferromagnetic domains. During sample cooling in the absence of an external magnetic field, the temperature dependence of magnetization is the same as that obtained during heating in the magnetic field. However, during the sample cooling in the magnetic field, substantially higher values of magnetization are obtained. Considerably higher magnetization of the cooled sample remains even after switching off the external magnetic field. The sintered sample, previously pressed in the magnetic field, has a higher dielectric constant than the sample pressed in the absence of the magnetic field. The dielectric constant decreases with increasing frequency.", journal = "Science of Sintering", title = "Influence of grinding, pressing and sintering of the powder 50.0 wt% Fe, 47.0 wt% BaTiO3 and 3.0 wt% TiO2 on morphology, microstructure, magnetic and electric properties", number = "InPress", pages = "67-67", doi = "10.2298/SOS230915067L" }
Luković, M., Spasojević-Savković, M., Kosić, O., Barudžija, T., Lojpur, V., Maričić, A.,& Spasojević, M.. (2023). Influence of grinding, pressing and sintering of the powder 50.0 wt% Fe, 47.0 wt% BaTiO3 and 3.0 wt% TiO2 on morphology, microstructure, magnetic and electric properties. in Science of Sintering(InPress), 67-67. https://doi.org/10.2298/SOS230915067L
Luković M, Spasojević-Savković M, Kosić O, Barudžija T, Lojpur V, Maričić A, Spasojević M. Influence of grinding, pressing and sintering of the powder 50.0 wt% Fe, 47.0 wt% BaTiO3 and 3.0 wt% TiO2 on morphology, microstructure, magnetic and electric properties. in Science of Sintering. 2023;(InPress):67-67. doi:10.2298/SOS230915067L .
Luković, Milentije, Spasojević-Savković, Milica, Kosić, Olivera, Barudžija, Tanja, Lojpur, Vesna, Maričić, Aleksa, Spasojević, Miroslav, "Influence of grinding, pressing and sintering of the powder 50.0 wt% Fe, 47.0 wt% BaTiO3 and 3.0 wt% TiO2 on morphology, microstructure, magnetic and electric properties" in Science of Sintering, no. InPress (2023):67-67, https://doi.org/10.2298/SOS230915067L . .