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Study of the Phase Formation of Sol-Gel YBa2Cu3O7-x Samples in Flowing Oxygen Atmosphere

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Abstract:

The relationship of the resistivity versus synthesizing temperature of sol-gel YBa2Cu3O7-x samples, with Tc  91K, was studied while synthesizing in flowing oxygen atmosphere. A set of high temperature  -T curves were obtained for the whole process. After four rounds of synthesizing, the resistivity of the sample was =1.00×10-3cm at room temperature. The -T curve of the last round also showed that the orthorhombic to tetragonal phase transformation of the sample occurred around 600oC that is lower than the YBa2Cu3O7-x sample prepared in ambient atmosphere. Other measurements such as X-ray diffraction, SEM measurement, low temperature R-T and M-T measurement were also taken to get more information of these samples.

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Periodical:

Materials Science Forum (Volumes 546-549)

Pages:

2097-2102

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.546-549.2097

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Online since:

May 2007

Authors:

Ting Luo, Yi Zhang, Qing Rong Feng

Keywords:

High-Temperature, Sol-Gel YBa2Cu3O7-x Sample, Synthesizing in Flowing Oxygen Atmosphere, ρ-T Curve

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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