Anisotropic grain growth of bismuth titanate in molten salt fluxes

2009 ◽  
pp. 477-482
Keyword(s):  
Molten Salt ◽  
Grain Growth ◽  
Bismuth Titanate ◽  
Molten Salt Fluxes

Anisotropic grain growth of Bi4Ti3O12 in molten salt fluxes

2003 ◽  
Vol 38 (4) ◽  
pp. 567-576 ◽  
Author(s):  
Yanmei Kan ◽  
Xihai Jin ◽  
Peiling Wang ◽  
Yongxiang Li ◽  
Yi-Bing Cheng ◽  
...  
Keyword(s):  
Molten Salt ◽  
Grain Growth ◽  
Molten Salt Fluxes

Effects of Starting Materials on Molten Salt Synthesis of Bi4Ti3O12

2008 ◽  
Vol 55-57 ◽  
pp. 165-168
Author(s):  
Paisan Setasuwon ◽  
S. Kijamnajsak
Keyword(s):  
Molten Salt ◽  
Grain Growth ◽  
Grain Orientation ◽  
Crystal Size ◽  
Raw Materials ◽  
Piezoelectric Materials ◽  
Molten Salt Synthesis ◽  
Chloride Salt ◽  
Templated Grain Growth

Na0.5Bi0.5TiO3 is one of the potential candidates for non-lead piezoelectric materials to replace existing lead-based ones. Properties of BNT could be enhanced by reactive templated grain growth (RTGG) technique through induction of grain orientation with crystals of Bi4Ti3O12. Controlling the size of Bi4Ti3O12 crystals during the synthesis with molten salt is a major factor in optimizing RTGG. It was found that molten salt synthesis of Bi4Ti3O12 crystals with NaCl-KCl yielded larger particles, compared with Na2SO4-3K2SO4. Varying the proportion of chloride salt did not produce noticeable changes in crystal size. Bi4Ti3O12 crystals were significantly affected by raw materials treatment. Non-milling of starting powders could approximately double the crystal size

Novel Molten Salt Assisted Autocombustion Method for the Synthesis of Aluminum-Doped SrFe12−xAlxO19 Hexaferrite Nanoparticles

2020 ◽  
Vol 20 (12) ◽  
pp. 7735-7742
Author(s):  
T. P. Poudel ◽  
D. Guragain ◽  
J. Mohapatra ◽  
J. P. Liu ◽  
S. R. Mishra
Keyword(s):  
Magnetic Properties ◽  
Molten Salt ◽  
Grain Growth ◽  
Growth Process ◽  
High Coercivity ◽  
Crystal Shape ◽  
Squareness Ratio ◽  
Highly Dispersed ◽  
Novel Method ◽  
Shape And Size

The study presents a novel molten salt assisted autocombustion synthesis of SrFe12−xAlxO19 particles. The extrinsic magnetic properties such as coercivity and the remanence of sintered M-type ferrites are highly dependent on the microstructure viz. morphology and size, of the ferrite particles. The control of the microstructures of ferrite particles is usually achieved via control nucleation and grain growth process. In this study, NaCl salt was used to control the crystal shape and size of Al3+ doped SrFe12−xAlxO19 particles. The presented novel method couples advantage of deriving homogenized particles via auctocombustion first and later sintering in the presence of NaCl salt. Highly dispersed, homogeneous, and hexagonal shaped SrFe12−xAlxO19 ferrite particles were achieved with this method. The particles derived via the molten salt assisted method presented a high coercivity and squareness ratio (>0.5) as compared to that obtained via autocombustion method only.

Syntheses of bismuth titanate templates obtained by the molten salt method

2013 ◽  
Vol 39 (7) ◽  
pp. 7291-7296 ◽  
Author(s):  
M.G.A. Ranieri ◽  
E.C. Aguiar ◽  
M. Cilense ◽  
A.Z. Simões ◽  
J.A Varela
Keyword(s):  
Molten Salt ◽  
Bismuth Titanate ◽  
Molten Salt Method

scholarly journals Giant Grain Growth in (K,Na)NbO3 Ceramics

Ceramist ◽  
2021 ◽  
Vol 24 (3) ◽  
pp. 286-294
Author(s):  
Seonhwa Park ◽  
Jung Woo Lee ◽  
Kyung-Hoon Cho ◽  
Yuho Min ◽  
Cheol-Woo Ahn
Keyword(s):  
Single Crystal ◽  
Molten Salt ◽  
Single Crystals ◽  
Grain Growth ◽  
Abnormal Grain Growth ◽  
Molten Salt Synthesis ◽  
Topochemical Reaction ◽  
Templated Grain Growth ◽  
Interesting Phenomenon

In this manuscript, an interesting phenomenon is reported. It has been reported that the growth of single crystals is observed in donor-doped (K,Na)NbO3 (KNN)-based ceramics. It is very interesting that the growth happens without the addition of a seed. The growth of huge grains (single crystal, approximately 30 mm,) occurs due to the abnormal grain growth (AGG) in KNN-based ceramics. In the AGG compositions, moreover, the seed plates can be synthesized by not topochemical reaction but simple molten salt synthesis (SMSS) which is a simple-and-cheap process. They can be a good candidate for the seeds at reactive templated grain growth (RTGG) or templated grain growth (TGG) process.

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