溶融水酸化物法で成膜されたEuBa<sub>2</sub>Cu<sub>4</sub>O<sub>8</sub> 膜の熱分解による EuBa<sub>2</sub>Cu<sub>3</sub>O<sub>7–</sub><i><sub>δ</sub></i> 膜の低温形成プロセスの検討
書誌事項
- タイトル別名
-
- Processing Study of Low-temperature Fabrication of EuBa<sub>2</sub>Cu<sub>3</sub>O<sub>7−</sub><i><sub>δ</i> </sub>Film by Transformation from EuBa<sub>2</sub>Cu<sub>4</sub>O<sub>8</sub> Film Deposited Using the Molten Hydroxide Method
- 溶融水酸化物法で成膜されたEuBa₂Cu₄O₈膜の熱分解によるEuBa₂Cu₃O[7-δ]膜の低温形成プロセスの検討
- ヨウユウ スイサンカブツホウ デ セイマク サレタ EuBa ₂ Cu ₄ O ₈ マク ノ ネツ ブンカイ ニ ヨル EuBa ₂ Cu ₃ O[7-d]マク ノ テイオン ケイセイ プロセス ノ ケントウ
この論文をさがす
抄録
<p>EuBa2Cu4O8 (Eu124) films were deposited on SrTiO3 (100) substrates using the molten hydroxide method and the eutectic composition of NaOH-KOH. The starting materials are a mixture of Eu2O3, BaO2 and CuO. The starting materials and SrTiO3 (100) substrates were put into molten NaOH-KOH at 475°C and kept for 12 h. After cooling in the furnace, substrates were extracted from solidified flux and washed using water and ethanol. The epitaxial Eu124 films obtained were heat-treated and decomposed at 550–825°C and P(O2)=2.0×10–1–1.0×10–5 atm in order to obtain the EuBa2Cu3O7−δ (Eu123) phase. Two-dimensionally aligned Eu123 film was formed on the SrTiO3 (001) substrate at 625°C using the decomposition process of Eu124 epitaxial film grown from molten hydroxide at 475°C. The transformation temperature from Eu124 to Eu123 decreased as the oxygen partial pressure during heat treatment decreased. Cu-rich particles and regions with a diameter of about a micron were precipitated on/in the Eu123 matrix of the decomposed film, and observed by SEM/EDS images. The films decomposed in P(O2)=10−4 atm at 625°C showed Tc=93 K by ρ-T measurement.</p>
収録刊行物
-
- 低温工学
-
低温工学 54 (3), 187-191, 2019-05-20
公益社団法人 低温工学・超電導学会 (旧 社団法人 低温工学協会)
- Tweet
キーワード
詳細情報 詳細情報について
-
- CRID
- 1390282763127305344
-
- NII論文ID
- 130007674417
-
- NII書誌ID
- AN00333419
-
- ISSN
- 18800408
- 03892441
-
- NDL書誌ID
- 029746554
-
- 本文言語コード
- ja
-
- データソース種別
-
- JaLC
- NDL
- Crossref
- CiNii Articles
- KAKEN
-
- 抄録ライセンスフラグ
- 使用不可