Preparation and Formation Process of TlBa2Can-1CunOy
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概要
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The Tl–Ba–Ca–Cu–O compounds, TlBa2Can-1CunOy ($n{=}1$–5), with a single Tl–O layer and multiple Cu–O layers per unit cell were prepared. The formation process of these phases was studied. The numbers of Cu–O and Tl–O layers were influenced by the thallium content. Control of the thallium content was essential to prepare the desired phases in the Tl–Ba–Ca–Cu–O system. The value of $T_{\text{c}}$ increased with increasing number of Cu–O layers ($1{\le}n{\le}4$). At $n{=}5$ $T_{\text{c}}$ was lower than that at $n{=}4$. Therefore, the highest $T_{\text{c}}$ value was obtained at $n{=}4$.
- 公益社団法人 応用物理学会の論文
- 1989-03-20
著者
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IHARA Hideo
Electrotechnical Laboratory
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Sugise Ryoji
Ube Industries Ltd.
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Sugise Ryoji
Ube Industries, Ltd., 1978-5 Kogushi, Ube, Yamaguchi 755
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