Authors:
M. Ferretti Dipartimento di Chimica e Chimica Industriale Via Dodecaneso 31 I-16146 Genova Italy Via Dodecaneso 31 I-16146 Genova Italy

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E. Magnone Università di Genova NFM and Dipartimento di Chimica e Chimica Industriale Via Dodecaneso 31 16146 Genova Italy Via Dodecaneso 31 16146 Genova Italy

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Abstract  

In this work the effect of oxygen pressure on the primary crystallisation fields for REBa2Cu3O7-x(RE=Nd, Sm, and Eu) has been studied. A DTA apparatus has been modified in order to carry out analyses under gas pressure, so the trend of temperatures of peritectic decomposition of the REBa2Cu3O7-xphases and of the eutectic equilibrium involving REBa2Cu3O7-x phases and flux mixture "Ba2Cu5O7" have been studied at oxygen pressures of 0.21, 1, and 10 atm. This showed that primary crystallisation fields spread at the increase of the oxygen pressure and allowed us to calculate the enthalpies of reactions of REBa2Cu3O7-xphases too.

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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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