The influence of mechanical activation on the morphological changes of Fe/BaTiO3 powder

Kosanović, Darko; Obradović, Nina; Pavlović, Vera P.; Marković, Smilja; Maricic, A.; Rasic, Goran; Vlahović, Branislav; Pavlović, Vladimir B.; Ristić, M.M.

doi:10.1016/j.mseb.2016.07.016

Cited by 5 publications

(3 citation statements)

References 35 publications

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“…Based on the obtained microstructural parameters (Table 3), prolonged milling time leads to a decrease in the crystallite size and an increase in the percentage of microstrain [41]. This is a result of the mechanical activation process caused by grinding, where the applied stress causes a reduction in the size of the grains and an increase in microstrain within the material.…”

Section: Resultsmentioning

confidence: 98%

Dielectric and Structural Properties of the Hybrid Material Polyvinylidene Fluoride-Bacterial Nanocellulose-Based Composite

Janićijević,

Filipović,

Sknepnek

et al. 2023

Polymers

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In the search for environmentally friendly materials with a wide range of properties, polymer composites have emerged as a promising alternative due to their multifunctional properties. This study focuses on the synthesis of composite materials consisting of four components: bacterial nanocellulose (BNC) modified with magnetic Fe3O4, and a mixture of BaTiO3 (BT) and polyvinylidene fluoride (PVDF). The BT powder was mechanically activated prior to mixing with PVDF. The influence of BT mechanical activation and BNC with magnetic particles on the PVDF matrix was investigated. The obtained composite films’ structural characteristics, morphology, and dielectric properties are presented. This research provides insights into the relationship between mechanical activation of the filler and structural and dielectric properties in the PVDF/BT/BNC/Fe3O4 system, creating the way for the development of materials with a wide range of diverse properties that support the concept of green technologies.

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Section: Resultsmentioning

confidence: 98%

Dielectric and Structural Properties of the Hybrid Material Polyvinylidene Fluoride-Bacterial Nanocellulose-Based Composite

Janićijević,

Filipović,

Sknepnek

et al. 2023

Polymers

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“…A powder mixture of Fe and BaTiO 3 was mechanically activated for different periods of time and then sintered at 1100 and 1200 o C. Pre-sintered samples contained a mixture of phase during sintering. Mechanical activation of pre-sintered samples of less than 100 min had not produced any significant effect on the powder microstructure [34] and, therefore, those samples were not investigated in detail. XRD patterns of a sintered mechanically activated powder mixture of Fe and BaTiO 3 are shown in Figure 1.…”

Section: Resultsmentioning

confidence: 99%

“…XRD patterns of a sintered mechanically activated powder mixture of Fe and BaTiO 3 are shown in Figure 1. Rietveld analysis (Table 1 and Supplement) indicates that the dominant crystalline phase in all of these samples is [34] allowing for a more effective conversion of precursors. Samples sintered after longer mechanical activation also exhibit higher values of lattice strain, suggesting a higher concentration of lattice defects.…”

Section: Resultsmentioning

confidence: 99%

Influence of mechanical activation on functional properties of barium hexaferrite ceramics

Kosanović

Blagojević

Maricic

et al. 2018

Ceramics International

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Barium hexaferrite ceramics were prepared using mechanically activated mixtures of iron and barium titanate. The 60:40 mass% Fe:BaTiO 3 powder mixtures were mechanically activated for different times (100-240 min) and sintered at 1100 and 1200 o C in order to determine the influence of mechanical activation of the precursor on the magnetic and dielectric properties of the resulting barium hexaferrite ceramics. The final product contained 84-89 mass% of Ba 2 Fe 22.46 O 38 Ti 1.54 phase, with higher content corresponding to longer mechanical activation of the precursor. XRD and Raman measurements indicated that the remainder of the sample consists of leftover BaTiO 3 and hematite, which was formed by the oxidation of iron during mechanical activation and sintering in air. Magnetic properties of samples sintered at 1200 o C are superior to those sintered at 1100 o C, which can be attributed to higher Ba 2 Fe 22.46 O 38 Ti 1.54 phase content. The position of the Curie temperature in 350-420 o C temperature region is consistent with 0.8:1 ratio of Ti to Ba. Maximum magnetization was observed for samples activated for 120 min. Dielectric properties of samples sintered at 1200 o C showed a dependence on frequency, with a significant drop in relative permittivity with an increase in

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Photocatalytic properties of BaTiO3/Fe2O3 under visible and ultraviolet irradiation

Ivanov,

Maryashin,

Sirotkin

et al. 2024

Ceramics International

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The influence of mechanical activation on the morphological changes of Fe/BaTiO3 powder

Cited by 5 publications

References 35 publications

Dielectric and Structural Properties of the Hybrid Material Polyvinylidene Fluoride-Bacterial Nanocellulose-Based Composite

Dielectric and Structural Properties of the Hybrid Material Polyvinylidene Fluoride-Bacterial Nanocellulose-Based Composite

Influence of mechanical activation on functional properties of barium hexaferrite ceramics

Photocatalytic properties of BaTiO3/Fe2O3 under visible and ultraviolet irradiation

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