Nano/micro Sr2Bi4Ti5O18 crystallites: Size dependent structural, second harmonic and piezoelectric properties

Tukaram, Shet and Bhimireddi, Rajasekhar and Varma, KBR (2016) Nano/micro Sr2Bi4Ti5O18 crystallites: Size dependent structural, second harmonic and piezoelectric properties. In: MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS, 211 . pp. 101-109.

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Abstract

Strontium bismuth titanate (Sr2Bi4Ti5O18) powders comprising crystallites of average sizes in the range of 94-1400 nm were prepared via citrate-assisted sol-gel route. With an increase in the average crystallite size there was a change in the lattice parameters and shift in the Raman vibration modes. Second harmonic signal (532 nm) intensity of the Sr2Bi4Ti5O18 powders increased with the increase in the average crystallite size and the maximum intensity obtained in the reflection mode was 1.4 times as high as that of the powdered KH2PO4. Piezo Force Microscopic analyses carried out on isolated crystallite of size 74 nm, established a single domain nature with the coercive field as high as 347 kV/cm. There was a systematic increase in the d(33) value with an increase in the size of the isolated crystallites and a high piezoelectric coefficient of similar to 27 pm/V was obtained from an isolated crystallite of size 480 nm. (C) 2016 Elsevier B.V. All rights reserved.

Item Type:	Journal Article
Publication:	MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
Additional Information:	Copy right for this article belongs to the ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Department/Centre:	Division of Chemical Sciences > Materials Research Centre
Date Deposited:	22 Oct 2016 09:19
Last Modified:	22 Oct 2016 09:19
URI:	http://eprints.iisc.ac.in/id/eprint/55011

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