Dielectric properties of Poly(methyl methacrylate) (PMMA)/CaCu3Ti4O12 Composites

Autor:	Thomas, P., Ernest Ravindran R S, Varma, K. B. R.
Jazyk:	angličtina
Rok vydání:	2013
Předmět:	Condensed Matter - Materials Science Materials Science (cond-mat.mtrl-sci) FOS: Physical sciences
Zdroj:	Web of Science
Popis:	Materials with high dielectric constant are in great demand for the miniaturization of electronic devices. More specifically, high dielectric constant polymer-ceramic composites are useful for embedded capacitor applications. A composite consisting of giant dielectric CaCu3Ti4O12 (CCTO) incorporated into the Poly(methyl methacrylate) (PMMA) polymer matrix has been fabricated by melt mixing followed by hot pressing. The composites thus fabricated has been characterised for structural, morphological and dielectric properties. The composites dielectric constants had increased when the CCTO content increased in the PMMA matrix. The dielectric constant of PMMA is around 4.9 @ 100Hz which has increased to 15.7 @ 100Hz when the ceramic content has increased to 40 Vol %. At low frequencies, space charge polarisation is dominant. This composite also exhibited remarkably low dielectric loss at high frequency, which makes this composite a suitable candidate for the capacitors in high frequency application. IEEE, ICPADM, 2012
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::35b6d575c242ff9c7b2efc51417415a4 http://arxiv.org/abs/1301.4070 Zobrazit plný text záznamu