Thermal expansion and electrical conductivity of (Bi2O3)1-x(Pr2O11/3)x solid electrolytes

Kostogloudis, GCh; Ftikos, Ch

dc.contributor.author	Kostogloudis, GCh	en
dc.contributor.author	Ftikos, Ch	en
dc.date.accessioned	2014-03-01T01:47:30Z
dc.date.available	2014-03-01T01:47:30Z
dc.date.issued	1998	en
dc.identifier.issn	09552219	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/25239
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0032208681&partnerID=40&md5=5d5fc17932b8c475238a2eabf7b171ce	en
dc.subject.other	Bismuth compounds	en
dc.subject.other	Electric conductivity	en
dc.subject.other	Oxides	en
dc.subject.other	Thermal expansion	en
dc.subject.other	Substituted composition	en
dc.subject.other	Solid electrolytes	en
dc.title	Thermal expansion and electrical conductivity of (Bi2O3)1-x(Pr2O11/3)x solid electrolytes	en
heal.type	journalArticle	en
heal.publicationDate	1998	en
heal.abstract	The thermal expansion and electrical conductivity of (Bi2O3)1-x(Pr2O11/3)x, where x = 0·2, 0·3, 0·4 and 0·5, were studied in the temperature range 100-800°C. Identification of the phases formed was performed by X-ray diffraction at room temperature. The β-type rhombohedral phase was confirmed for the samples with x = 0·2, 0·3, and the LaOF-type rhombohedral phase for x = 0·5. A mixture of the two phases was observed for x = 0·4. A jump in both the thermal expansion and the electrical conductivity curves for x = 0·2, 0·3 and 0·4, at around 700°C, indicated the occurrence of a phase transition. The thermal expansion coefficient of the substituted compositions in the low temperature range was in all cases higher than that of pure Bi2O3 but it decreased linearly with increasing Pr2O11/3 content. The LaOF-type structure exhibited higher conductivity and lower activation energy values compared with the β-type structure. The conductivity of the high temperature phase decreased with increasing Pr2O11/3 content. © 1998 Elsevier Science Limited. All rights reserved.	en
heal.journalName	Journal of the European Ceramic Society	en
dc.identifier.volume	18	en
dc.identifier.issue	12	en
dc.identifier.spage	1711	en
dc.identifier.epage	1715	en