Abstract.
J. Eur. Ceram. Soc. 37 (2017) 1509–1516. (DOI: 10.1016/j.jeurceramsoc.2016.12.014).
A facile method to prepare nanoscaled BaFe0.5Nb0.5O3 via synthesis in boiling NaOH solution is described herein. The nano-crystalline powder has a high specific surface area of 55 m2 g−1 and a crystallite size of 15 nm. The as-prepared powder does not show any
significant crystallite growth up to 700 °C. The activation energy of the crystallite growth process was calculated as 590 kJ mol−1. Dense ceramics can be obtained either after sintering at 1200 °C for 1 h or after two-step sintering at 1000 °C for 10 h. The average grain sizes of ceramic bodies can be tuned between 0.23 μm and 12 μm. The thermal expansion coefficient was determined as 11.4(3)⋅10−6 K−1. The optical band gap varies between 2.90(5) and 2.63(3) eV. Magnetic measurements gave a Néel temperature of 20 K. Depending on the sintering regime, the ceramic samples reach permittivity values between 2800 and 137000 at RT and 1 kHz.
Koferstein, R. (2021). Investigations of BaFe0.5Nb0.5O3 Nano Powders Prepared by a Low Temperature Aqueous Synthesis and Resulting Ceramics. Afribary. Retrieved from https://afribary.com/works/investigations-of-bafe0-5nb0-5o3-nano-powders-prepared-by-a-low-temperature-aqueous-synthesis-and-resulting-ceramics
Koferstein, Roberto "Investigations of BaFe0.5Nb0.5O3 Nano Powders Prepared by a Low Temperature Aqueous Synthesis and Resulting Ceramics" Afribary. Afribary, 04 Aug. 2021, https://afribary.com/works/investigations-of-bafe0-5nb0-5o3-nano-powders-prepared-by-a-low-temperature-aqueous-synthesis-and-resulting-ceramics. Accessed 27 Nov. 2024.
Koferstein, Roberto . "Investigations of BaFe0.5Nb0.5O3 Nano Powders Prepared by a Low Temperature Aqueous Synthesis and Resulting Ceramics". Afribary, Afribary, 04 Aug. 2021. Web. 27 Nov. 2024. < https://afribary.com/works/investigations-of-bafe0-5nb0-5o3-nano-powders-prepared-by-a-low-temperature-aqueous-synthesis-and-resulting-ceramics >.
Koferstein, Roberto . "Investigations of BaFe0.5Nb0.5O3 Nano Powders Prepared by a Low Temperature Aqueous Synthesis and Resulting Ceramics" Afribary (2021). Accessed November 27, 2024. https://afribary.com/works/investigations-of-bafe0-5nb0-5o3-nano-powders-prepared-by-a-low-temperature-aqueous-synthesis-and-resulting-ceramics