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Title: Microwave dielectric properties of CaCu{sub 3}Ti{sub 4}O{sub 12}-Al{sub 2}O{sub 3} composite

Abstract

(1-x)CaCu{sub 3}Ti{sub 4}O{sub 12} + (x)Al{sub 2}O{sub 3} composite (0 ≤ x ≤0.25) was prepared via conventional solid-state reaction method. The fabrication of sample was started with synthesizing stoichiometric CCTO from CaCO{sub 3}, CuO and TiO{sub 2} powders, then wet-mixed in deionized water for 24 h. The process was continued with calcined CCTO powder at 900 °C for 12 h before sintered at 1040 °C for 10 h. Next, the calcined CCTO powder with different amount of Al{sub 2}O{sub 3} were mixed for 24 h, then palletized and sintered at 1040 °C for 10. X-ray diffraction analysis on the sintered samples showed that CCTO powder was in a single phase, meanwhile the trace of secondary peaks which belong to CaAl{sub 2}O{sub 4} and Corundum (Al{sub 2}O{sub 3}) could be observed in the other samples Scanning electron microscopy analysis showed that the grain size of the sample is firstly increased with addition of Al{sub 2}O{sub 3} (x = 0.01), then become smaller with the x > 0.01. Microwave dielectric properties showed that the addition of Al{sub 2}O{sub 3} (x = 0.01) was remarkably reduced the dielectric loss while slightly increased the dielectric permittivity. However, further addition of Al{sub 2}O{sub 3} wasmore » reduced both dielectric loss and permittivity at least for an order of magnitude.« less

Authors:
; ; ;  [1]; ;  [2];  [3]
  1. School of Materials and Mineral Resources Engineering, Engineering Campus, Universiti Sains Malaysia, 14300 Nibong Tebal, Penang (Malaysia)
  2. Advance Materials Research Cluster, Faculty of Earth Sciences, Universiti Malaysia Kelantan, Jeli Campus, 17600 Jeli, Kelantan (Malaysia)
  3. School of Electrical and Electronic Engineering, Engineering Campus, Universiti Sains Malaysia, 14300 Nibong Tebal, Penang (Malaysia)
Publication Date:
OSTI Identifier:
22608472
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1756; Journal Issue: 1; Conference: ICoFM 2016: 2. international conference on functional materials and metallurgy, Penang (Malaysia), 28 May 2016; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ALUMINIUM OXIDES; CALCIUM CARBONATES; CALCIUM COMPOUNDS; COMPOSITE MATERIALS; COPPER COMPOUNDS; COPPER OXIDES; CORUNDUM; DIELECTRIC MATERIALS; FABRICATION; GRAIN SIZE; MICROWAVE RADIATION; PERMITTIVITY; POWDERS; SCANNING ELECTRON MICROSCOPY; SOLIDS; STOICHIOMETRY; TITANATES; TITANIUM OXIDES; X-RAY DIFFRACTION

Citation Formats

Rahman, Mohd Fariz Ab, Abu, Mohamad Johari, Zaman, Rosyaini Afindi, Ahmad, Zainal Arifin, Karim, Saniah Ab, Mohamed, Julie Juliewatty, E-mail: juliewatty.m@umk.edu.my, and Ain, Mohd Fadzil. Microwave dielectric properties of CaCu{sub 3}Ti{sub 4}O{sub 12}-Al{sub 2}O{sub 3} composite. United States: N. p., 2016. Web. doi:10.1063/1.4958750.
Rahman, Mohd Fariz Ab, Abu, Mohamad Johari, Zaman, Rosyaini Afindi, Ahmad, Zainal Arifin, Karim, Saniah Ab, Mohamed, Julie Juliewatty, E-mail: juliewatty.m@umk.edu.my, & Ain, Mohd Fadzil. Microwave dielectric properties of CaCu{sub 3}Ti{sub 4}O{sub 12}-Al{sub 2}O{sub 3} composite. United States. doi:10.1063/1.4958750.
Rahman, Mohd Fariz Ab, Abu, Mohamad Johari, Zaman, Rosyaini Afindi, Ahmad, Zainal Arifin, Karim, Saniah Ab, Mohamed, Julie Juliewatty, E-mail: juliewatty.m@umk.edu.my, and Ain, Mohd Fadzil. Tue . "Microwave dielectric properties of CaCu{sub 3}Ti{sub 4}O{sub 12}-Al{sub 2}O{sub 3} composite". United States. doi:10.1063/1.4958750.
@article{osti_22608472,
title = {Microwave dielectric properties of CaCu{sub 3}Ti{sub 4}O{sub 12}-Al{sub 2}O{sub 3} composite},
author = {Rahman, Mohd Fariz Ab and Abu, Mohamad Johari and Zaman, Rosyaini Afindi and Ahmad, Zainal Arifin and Karim, Saniah Ab and Mohamed, Julie Juliewatty, E-mail: juliewatty.m@umk.edu.my and Ain, Mohd Fadzil},
abstractNote = {(1-x)CaCu{sub 3}Ti{sub 4}O{sub 12} + (x)Al{sub 2}O{sub 3} composite (0 ≤ x ≤0.25) was prepared via conventional solid-state reaction method. The fabrication of sample was started with synthesizing stoichiometric CCTO from CaCO{sub 3}, CuO and TiO{sub 2} powders, then wet-mixed in deionized water for 24 h. The process was continued with calcined CCTO powder at 900 °C for 12 h before sintered at 1040 °C for 10 h. Next, the calcined CCTO powder with different amount of Al{sub 2}O{sub 3} were mixed for 24 h, then palletized and sintered at 1040 °C for 10. X-ray diffraction analysis on the sintered samples showed that CCTO powder was in a single phase, meanwhile the trace of secondary peaks which belong to CaAl{sub 2}O{sub 4} and Corundum (Al{sub 2}O{sub 3}) could be observed in the other samples Scanning electron microscopy analysis showed that the grain size of the sample is firstly increased with addition of Al{sub 2}O{sub 3} (x = 0.01), then become smaller with the x > 0.01. Microwave dielectric properties showed that the addition of Al{sub 2}O{sub 3} (x = 0.01) was remarkably reduced the dielectric loss while slightly increased the dielectric permittivity. However, further addition of Al{sub 2}O{sub 3} was reduced both dielectric loss and permittivity at least for an order of magnitude.},
doi = {10.1063/1.4958750},
journal = {AIP Conference Proceedings},
number = 1,
volume = 1756,
place = {United States},
year = {Tue Jul 19 00:00:00 EDT 2016},
month = {Tue Jul 19 00:00:00 EDT 2016}
}