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In trying to downsize monolithic
ceramic capacitors, we face the challenge of making the thinnest
possible dielectric layer. To meet this challenge, we must create
well-crystallized ceramic materials. One of the approaches is
the micro-emulsion method. When we disperse water with an adequate
surfactant into a hydrophobic solvent, ultra fine water particles
at the nanometer level become emulsified. For example, if we
add titanium and barium based compound alkoxide solution to
react with water particles, we end up with crystallized barium
titanate dispersion droplets approximately 8 nm in diameter.
Because the synthesized particles are ultra-fine and well-dispersed,
the dispersion droplets appear transparent. By directly forming
a membrane with these dispersion droplets, we can make fine-grain,
very thin membrane with superior dielectric property. |
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| Barium Titanate Nano Particles Synthesized
with Micro-Emulsion Method |
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