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Rapid synthesis of Y- and Bi-based high-Tc cuprates by microwave irradiation by Masatsune Kato; Kenji Sakakibara; Yoji Koike is a Physics and Astronomy article available to read on EtoBox.

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AbstractÐHigh-T c superconducting samples of YBa 2 Cu 3 O 7 À x with T c H90 K and Bi 2.2 Sr 1.8 Cu 1.05 O x with T c H9 K have been prepared for several ten min, using a domestic microwave oven operated at 2.45 GHz, without any post-heat-treatment. Post-heat-treatment is not necessary due to improvement of the sample environment during the microwave process. That is, a pellet of mixed powder of starting materials is surrounded by mixed powder of starting materials and, subsequently, wrapped in glass wool in order to suppress rapid dissipation of heat from the surface of the pellet. This leads to successful preparation of homogeneous and oxygenated samples. In addition, we have attempted to prepare Bi-2212 and Bi-2223 phases. A sample whose major phase was Bi-2212 was obtained. However, no sample with the Bi-2223 phase could be obtained.

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Author

Masatsune Kato; Kenji Sakakibara; Yoji Koike

Publisher

Elsevier Science; Elsevier ; Pergamon Press Ltd.; Elsevier BV (ISSN 0964-1807)

Published

1997

Language

EN

Field

Physics and Astronomy (Physical Sciences)