Relaxor dielectric response in titanium enriched 0.50 PMN � 0.50 PT ceramic

Sivan, V and K, GN and Singh, RP and Augustine, P (2024) Relaxor dielectric response in titanium enriched 0.50 PMN � 0.50 PT ceramic. In: Ceramics International .

	PDF Cer_Int_2024.pdf - Published Version Restricted to Registered users only Download (4MB) | Request a copy
	Microsoft Word Cer_Int_Sup_2024.docx - Published Supplemental Material Restricted to Registered users only Download (208kB) | Request a copy

Abstract

(1-x) PbMg1/3Nb2/3 � xPbTiO3 ceramic with x = 0.50 is analyzed in this report. Structural and microstructural features were studied and correlated with the electrical properties exhibited by the densified ceramic capacitor. The tetragonal phase structure, along with uniform and dense microstructure of the ceramic composition, was identified as the reason for the observed functional modulations in the binary relaxor system. Contrary to the expectations based on crystal symmetry, the (1-x) PMN-xPT composition beyond the morphotropic phase boundary exhibited a lesser ferroelectric response along with reasonable relaxor attributes. This unusual feature in functional response was systematically analyzed to understand the underlying mechanisms. The ferroelectric study revealed a maximum EC value of 35.15 kV/cm, a remnant polarization Pr �18.91 μCcm �2, and a maximum recoverable energy of �55 mJ/cm3. The electrical attributes of the ceramic revealed in the study confirms the suitability of the composite for capacitor and actuator applications and opens opportunities such as thin film studies to realize smart and intelligent memory systems. © 2024 Elsevier Ltd and Techna Group S.r.l.

Item Type:	Journal Article
Publication:	Ceramics International
Publisher:	Elsevier Ltd
Additional Information:	The copyright for this article belongs to the publisher.
Keywords:	Capacitor bank; Crystal symmetry; Ferroelectric ceramics; Ferroelectricity; Film capacitor; Palladium compounds, Densified ceramics; Dielectric response; Microstructural features; PMN-PT; Property; Relaxors; Structural feature; Tetragonal phase; Tetragonal phase structure; Titania, Ceramic capacitors
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	09 Dec 2024 18:12
Last Modified:	09 Dec 2024 18:12
URI:	http://eprints.iisc.ac.in/id/eprint/87100

Actions (login required)

View Item