STUDY OF PROPERTIES OF BISMUTH SODIUM TITANATE (BNT)

Habteselassie, Menkir

dc.contributor.author	Habteselassie, Menkir
dc.date.accessioned	2017-08-04T05:30:41Z
dc.date.available	2017-08-04T05:30:41Z
dc.date.issued	2017-08-04
dc.identifier.uri	http://hdl.handle.net/123456789/7615
dc.description	A THESIS SUBMITTED TO THE SCHOOL OF GRADUATE STUDIES OF BAHIR DAR UNIVERSITY IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF MASTER OF SCIENCE IN PHYSICS	en_US
dc.description.abstract	Piezoelectricity has an important role in our daily life especially in electronic indus tries. Dielectric, ferroelectric, and piezoelectric properties including phase transition temperatures of perovskite-type bismuth sodium titanate, (B'i o . 5 Nao.5)Ti0 [BNT] based lead-free piezoelectric ceramics have been studied from the the view point of being candidates for lead-free piezoelectric materials to reduce environmental damage. The phenomenological theory of phase transition is presented using Landau-Ginzburg Devonshire formalism. The spontaneous polarization as a function of temperature for both first and second order phase transitions and the temperature dependence of the dielectric constant of BNT are discussed. Key words : Dielectric, Landau equation, lead free piezoelectric, phase transition, BNT.	en_US
dc.subject	PHYSICS	en_US
dc.title	STUDY OF PROPERTIES OF BISMUTH SODIUM TITANATE (BNT)	en_US
dc.type	Thesis	en_US