BaGeO3 as Sintering Additive for BaTiO3-MgFe2O4 Composite Ceramics

Subscribe to access this work and thousands more

RSC Adv., 2015, 5, 71491, DOI: 10.1039/c5ra12312g,

Abstract::

BaTiO3-MgFe2O4 composites (30 wt.% MgFe2O4) with a small addition of BaGeO3 as a sintering additive were synthesized by a one-pot Pechini-like sol-gel process. Nano-crystalline composite powders with a crystallite size of about 10 nm were obtained after reaction at 700 °C for 1 h. Magnetic investigations suggest that the nano-powder is in its superparamagnetic state at room temperature. The addition of BaGeO3 leads to an improved sintering behaviour. DTA measurements reveal the formation of a liquid phase at 1164(3) °C. Dense ceramic bodies (relative density  90 %) were obtained after sintering for 1 h at 1150 °C. SEM investigations prove a 0-3 connectivity and show that the addition of BaGeO3 promotes the grain growth leading to particles up to 4 μm. In contrast, fine-grained composite ceramics with smaller particles up to 230 nm were obtained after a two-step sintering process. Magnetic measurements indicate a ferrimagnetic behaviour with coercivity values up to 70 Oe depending on the sintering procedure. Furthermore, addition of BaGeO3 results in an increase of the relative permittivity, whereas the dissipation factor slightly decreases.

Subscribe to access this work and thousands more
Save
Need help with your academic research project/paper, technical or creative writing? Hire our expert researchers and writers. Click Here to Submit a Writing Request
Overall Rating

0

5 Star
(0)
4 Star
(0)
3 Star
(0)
2 Star
(0)
1 Star
(0)
APA

Koferstein, R. & Ebbinghaus, S (2021). BaGeO3 as Sintering Additive for BaTiO3-MgFe2O4 Composite Ceramics. Afribary. Retrieved from https://afribary.com/works/bageo3-as-sintering-additive-for-batio3-mgfe2o4-composite-ceramics

MLA 8th

Koferstein, Roberto, and Stefan Ebbinghaus "BaGeO3 as Sintering Additive for BaTiO3-MgFe2O4 Composite Ceramics" Afribary. Afribary, 14 Jul. 2021, https://afribary.com/works/bageo3-as-sintering-additive-for-batio3-mgfe2o4-composite-ceramics. Accessed 27 Nov. 2021.

MLA7

Koferstein, Roberto, and Stefan Ebbinghaus . "BaGeO3 as Sintering Additive for BaTiO3-MgFe2O4 Composite Ceramics". Afribary, Afribary, 14 Jul. 2021. Web. 27 Nov. 2021. < https://afribary.com/works/bageo3-as-sintering-additive-for-batio3-mgfe2o4-composite-ceramics >.

Chicago

Koferstein, Roberto and Ebbinghaus, Stefan . "BaGeO3 as Sintering Additive for BaTiO3-MgFe2O4 Composite Ceramics" Afribary (2021). Accessed November 27, 2021. https://afribary.com/works/bageo3-as-sintering-additive-for-batio3-mgfe2o4-composite-ceramics