Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 9: Issue 1
Polymorphic modifications of barium metagermanate
Authors:
J. P. Guha Institute Jožef Stefan University of Ljubljana Jamova 39 61000 Ljubljana Yugoslavia

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D. Kolar Institute Jožef Stefan University of Ljubljana Jamova 39 61000 Ljubljana Yugoslavia

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A. Porenta Institute Jožef Stefan University of Ljubljana Jamova 39 61000 Ljubljana Yugoslavia

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Pages:
37–41
Online Publication Date:
13 Aug 2005
Publication Date:
01 Feb 1976
Article Category:
Research Article
DOI:
https://doi.org/10.1007/bf01909262
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Polymorphic transformations of BaGeO3 were investigated by DTA and X-ray diffraction methods and the data obtained were compared with those previously published. BaGeO3 undergoes a reversible phase transformation at 1100° from a low-temperature hexagonal polymorph to a medium-temperature polymorph having an unknown crystal structure, which undergoes a further reversible transformation at 1200° to a high-temperature orthorhombic polymorph found to be stable up to the melting temperature of 1287°. On cooling from the melt, the high-temperature form can be retained metastably at room temperature, but transforms to the low-temperature form at 900°.

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Cover Journal of Thermal Analysis and Calorimetry
Journal of Thermal Analysis and Calorimetry
Print ISSN:
1388-6150
Online ISSN:
1572-8943

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation		 1969
Volumes
per Year		 1
Issues
per Year		 24
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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