Preparation, characterization, ac conductivity and permittivity studies on vitreous M4AlCdP3O12 (M=Li, Na, K) system

Autor:	S. Vinoth Rathan, C.R. Mariappan, G. Govindaraj, G. Vijaya Prakash
Rok vydání:	2005
Předmět:	Permittivity Materials science Mechanical Engineering Diffusion Analytical chemistry Relative permittivity Conductivity Condensed Matter Physics Amorphous solid Mechanics of Materials Ionic conductivity Relaxation (physics) General Materials Science Polarization (electrochemistry)
Zdroj:	Materials Science and Engineering: B. 121:2-8
ISSN:	0921-5107
DOI:	10.1016/j.mseb.2004.11.005
Popis:	Vitreous M4AlCdP3O12 (M = Li, Na, K) NASICON-type materials are synthesized, characterized and their electrical properties are reported at different temperatures in the frequency range of 42 Hz to 1 MHz. Ac conductivity and permittivity data are analyzed by using conductivity formalism. The dc conductivity and hopping frequency are thermally activated and their activation energies found to be in the range of 0.79–0.85 eV. The variation of dielectric permittivity with frequency is attributed to ion diffusion and polarization occurring in the NASICONtype vitreous materials. Scaling in conductivity and permittivity shows that the relaxation mechanisms are independent of temperature for the NASICON-type vitreous materials. © 2004 Elsevier B.V. All rights reserved.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d7935c9a8c48e922b33e2c1b1ea273bf https://doi.org/10.1016/j.mseb.2004.11.005 Zobrazit plný text záznamu Full Text from ScienceDirect