Effect of organic flux on the colossal dielectric constant of CaCu3Ti4O12 (CCTO)
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2015-05-18
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Vishnu Razdan, Abhishek Singh, Brad Arnold, Fow-Sen Choa, Lisa Kelly, N. B. Singh, Effect of organic flux on the colossal dielectric constant of CaCu3Ti4O12 (CCTO) , Proceedings Volume 9493, Energy Harvesting and Storage: Materials, Devices, and Applications VI; 949308 (2015) https://doi.org/10.1117/12.2177694
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Copyright (2015) Society of Photo-Optical Instrumentation Engineers (SPIE). One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
Copyright (2015) Society of Photo-Optical Instrumentation Engineers (SPIE). One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
Abstract
We have used low temperature organics to achieve orientation of the grains of Ca₂/₃Cu₃Ti₄O₁₂ (CCTO) compound to increase the resistivity. During the past fifteen years CCTO has been studied extensively for its performance as a dielectric capacitor. We have synthesized and grown large grains of pure Ca₂/₃Cu₃Ti₄O₁₂ and doped compound, and studied the dielectric constant and resistivity. The grains were aligned by using a naphthalene-camphor eutectic. CCTO was mixed in the organic melt and oriented by the directional solidification method. This material has different characteristics than pure processed CCTO material. The effect of solidification conditions and its effect on the morphology and the dielectric constant, resistivity and loss tan delta of pure and doped CCTO are described in this article.