Structural and electrical properties of Nb-substituted LiTa1-xNbxO3

Citation

Bak, K. Y. and Tan, Kar Ban and Khaw, Chwin Chieh and Zainal, Zulkarnain and Tan, P. Y. and Chon, Mun Ping (2014) Structural and electrical properties of Nb-substituted LiTa1-xNbxO3. Sains Malaysiana, 43 (10). pp. 1573-1582. ISSN 0026-6039

Abstract

Single phase LiTa1-xNbxO3 solid solution with 0.00 ≤ x ≤ 1.00 was successfully synthesised via conventional solid-state method at 950°C for 24 h. These materials were refined and fully indexed with hexagonal crystal system, space group of R3c; lattice parameters, a ranging from 5.1410(6) Ǻ to 5.1471(3) Ǻ and c ranging from 13.7467(1) Ǻ to 13.8341(1) Ǻ; with α = β = 90° and γ = 120°. Variation of the lattice parameters in these materials was found to be negligibly small throughout the subsolidus solution. No thermal event was detected within the studied temperature range of 50 to 1000°C. The electrical properties of samples were characterised by AC impedance analyser, HP4192A at temperature ranging from room temperature to 850°C over a frequency range of 5 Hz to 13 MHz. LiTa1-xNbxO3 materials exhibited bulk response with associated capacitances in the order of 10-12 F cm-1 and the temperature-dependent conductivities were found to increase with increasing temperatures. The results showed that LiTa1-xNbxO3 samples were of typical ferroelectrics.

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Official URL or Download Paper: http://www.ukm.my/jsm/english_journals/vol43num10_...

Additional Metadata

Item Type:	Article
Divisions:	Faculty of Science
Publisher:	Penerbit Universiti Kebangsaan Malaysia
Keywords:	Ferroelectric; Impedance; Solid solution; Solid-state method
Depositing User:	Nurul Ainie Mokhtar
Date Deposited:	11 Jan 2016 03:13
Last Modified:	17 Oct 2018 00:45
URI:	http://psasir.upm.edu.my/id/eprint/35490
Statistic Details:	View Download Statistic

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