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

Kostogloudis, GC; Ftikos, C

dc.contributor.author	Kostogloudis, GC	en
dc.contributor.author	Ftikos, C	en
dc.date.accessioned	2014-03-01T01:47:45Z
dc.date.available	2014-03-01T01:47:45Z
dc.date.issued	1998	en
dc.identifier.issn	0955-2219	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/25305
dc.subject.classification	Materials Science, Ceramics	en
dc.subject.other	OXIDE-ION	en
dc.subject.other	SINTERED OXIDES	en
dc.subject.other	BI2O3-PR6O11	en
dc.subject.other	PHASES	en
dc.subject.other	BI2O3	en
dc.title	Thermal expansion and electrical conductivity of (Bi2O3)(1-x)(Pr2O11/3)(x) solid electrolytes	en
heal.type	journalArticle	en
heal.language	English	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 degrees C. Identification of the phases formed was performed by X-ray diffraction at room temperature. The beta-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 degrees 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 beta-type structure. The conductivity of the high temperature phase decreased with increasing Pr2O11/3 content. (C) 1998 Elsevier Science Limited. All rights reserved.	en
heal.publisher	ELSEVIER SCI LTD	en
heal.journalName	JOURNAL OF THE EUROPEAN CERAMIC SOCIETY	en
dc.identifier.isi	ISI:000076115500009	en
dc.identifier.volume	18	en
dc.identifier.issue	12	en
dc.identifier.spage	1711	en
dc.identifier.epage	1715	en