REDUCTION OF ANTI-FERROELECTRIC TEMPERATURE REGION IN NBT-BT CERAMICS USING 100 MEV O7+ ION IRRADIATION

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Title:	REDUCTION OF ANTI-FERROELECTRIC TEMPERATURE REGION IN NBT-BT CERAMICS USING 100 MEV O7+ ION IRRADIATION
Authors:	S, Shanmuga Sundari Ramaswamy Murugan K, Asokan R, Dhanasekaran
Keywords:	NBT-BT Oxygen irradiation Relaxor ferroelectrics Swift heavy ion irradiation Dielectrics
Issue Date:	2014
Publisher:	Elsevier
Abstract:	NBT-BT (sodium bismuth titanate-barium titanate) lead-free ceramics were prepared via the conventional solid-state reaction method in the Morphotropic Phase Boundary (MPB) composition. The prepared ceramics were irradiated with 100 MeV O7+ ions using four different fluences of 5 × 1011, 1 × 1012, 5 × 1012 and 1 × 1013 ions/cm2. The dielectric constants of the pristine and irradiated samples were determined from 300 to 623 K for a broad range of frequencies from 20 Hz to 2 MHz. Irradiation with oxygen ions decreased the anti-ferroelectric temperature region present in the samples. The structural stability of the samples against the irradiation was investigated via XRD and Raman spectroscopy before and after the irradiation.
URI:	https://doi.org/10.1016/j.nimb.2013.10.007 http://localhost:8080/xmlui/handle/123456789/1658
ISSN:	0168-583X
Appears in Collections:	International Journals

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