JP2011165568A - 酸化物超電導線材及び酸化物超電導線材の製造方法 - Google Patents
酸化物超電導線材及び酸化物超電導線材の製造方法 Download PDFInfo
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- H10N60/00—Superconducting devices
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- H10N60/0268—Manufacture or treatment of devices comprising copper oxide
- H10N60/0296—Processes for depositing or forming copper oxide superconductor layers
- H10N60/0576—Processes for depositing or forming copper oxide superconductor layers characterised by the substrate
- H10N60/0632—Intermediate layers, e.g. for growth control
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Abstract
【解決手段】Y系超電導線材10は、テープ状の無配向金属基板11と、テープ状の無配向金属基板11上にIBAD法を用いて成膜された第1中間層(シード層)12とからなるテープ状線材13と、テープ状線材13上にRTR式のRF−magnetronsputtering法により、第1中間層(シード層)12の側面まで延びた側面部14aを有する第2中間層(キャップ層)14とを備える。
【選択図】図1
Description
図1は、本発明の実施の形態1に係るテープ状酸化物超電導体の中間層の膜構造を示す断面図である。本実施の形態は、2層の中間層を有する酸化物超電導体に適用した例である。
図2に示すように、テープ状酸化物超電導体20は、無配向金属基板11上に、Gd2Zr2O7(GZO)第1中間層12と、側面部14aを有するCeO2第2中間層14と、YBCO超電導層21とを積層した構造となっている。
RF−Sputtering装置110のRF印加電力:0.5〜2kW
チャンバ内のガス圧:1〜100mTorr
図3に示すように、成膜装置100は、RF−Sputtering装置110とRTR方式テープ移動機構120とマルチターン機構130とを組み合わせた構造を有する。
YBCO膜の超電導特性は、CeO2中間層の面内配向性や表面平滑性などに大きく左右される。CeO2膜の場合にはクラックの発生がない成膜が必要である。また、GZO中間層上にCeO2膜をPLD法で成膜した場合、膜厚の増加に伴いCeO2膜の結晶粒面内配向性(Δφ)が急激に向上する自己配向(selfepitaxy)利用することができる。その他の理由により、中間層は多層により成膜されることが一般的である。
幅5mm、厚さ70μmのNi基合金基板(配向金属基板31)上に、第1中間層32としてCe−Gd−O系酸化物層及び第2中間層33としてCe−Zr−O系酸化物層をMOD法により形成した。Ni基合金基板1の結晶の配向性は、X線回折で測定した結果、そのΔφ(半値幅)は6.5度であった。
11 無配向金属基板
12,32 第1中間層
13 テープ状線材
14,33 第2中間層
14a,34a 側面部
20,30 テープ状酸化物超電導体
21 YBCO超電導膜
31 配向金属基板
34 第3中間層
100 成膜装置
101a,101b 線材ホルダ
102 テープ状線材加熱用ヒータ
110 RF−Sputtering装置
111 ターゲット
120 RTR方式テープ移動機構
121,122 ターンリール
130 マルチターン機構
Claims (9)
- テープ状金属基板上に、第1中間層と第2中間層とを順に積層した酸化物超電導線材であって、
前記第2中間層は、前記第1中間層の側面まで延びている酸化物超電導線材。 - 前記第1中間層は、1又は複数の中間層からなり、前記第2中間層は、酸化物超電導層の直下に形成される請求項1記載の酸化物超電導線材。
- 前記第2中間層は、前記第1中間層よりも耐酸性の薄膜である請求項1記載の酸化物超電導線材。
- 前記第2中間層は、CeO2膜である請求項1記載の酸化物超電導線材。
- 前記第2中間層の前記側面の膜厚は、前記第2中間層の主面の膜厚の1/5以下である請求項1記載の酸化物超電導線材。
- 前記第2中間層は、前記第1中間層の側面の少なくとも1/2以上にまで延びている請求項1記載の酸化物超電導線材。
- 前記第2中間層は、前記テープ状金属基板の側面又は底面まで延びている請求項1記載の酸化物超電導線材。
- 前記酸化物超電導層は、MOD法により成膜されたREBaCuO(REは、Y、Nd、Sm、Gd、Eu、Yb又はHoから選択された1種以上を示す。)からなる請求項3記載の酸化物超電導線材。
- テープ状金属基板上に1又は複数の層からなる第1中間層を成膜したテープ状線材に、第2中間層を成膜する酸化物超電導線材の製造方法であって、
一対のターンリール間に前記テープ状線材を一定速度でスパッタリング成膜領域中を移動させる工程と、
前記スパッタリング成膜領域中を移動する前記テープ状線材を、所定間隔離して複数回に亘って折り返し移動させる工程と、
ターゲットから弾き出した蒸着原料を、所定間隔離れて配置された前記テープ状線材の側面に回り込むように堆積させ、前記第2中間層が、前記第1中間層の側面まで延びた薄膜を形成する工程と
を有する酸化物超電導線材の製造方法。
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JP2010029119A JP5513154B2 (ja) | 2010-02-12 | 2010-02-12 | 酸化物超電導線材及び酸化物超電導線材の製造方法 |
PCT/JP2011/000774 WO2011099301A1 (ja) | 2010-02-12 | 2011-02-10 | 酸化物超電導線材及び酸化物超電導線材の製造方法 |
KR1020127021218A KR101664465B1 (ko) | 2010-02-12 | 2011-02-10 | 산화물 초전도 선재 및 산화물 초전도 선재의 제조 방법 |
CN201180008925.5A CN102870172B (zh) | 2010-02-12 | 2011-02-10 | 氧化物超导线材及氧化物超导线材的制造方法 |
US13/578,344 US8965469B2 (en) | 2010-02-12 | 2011-02-10 | Oxide superconductor cabling and method of manufacturing oxide superconductor cabling |
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WO2013157286A1 (ja) | 2012-04-16 | 2013-10-24 | 古河電気工業株式会社 | 超電導成膜用基材及び超電導線並びに超電導線の製造方法 |
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KR101458513B1 (ko) * | 2012-08-29 | 2014-11-07 | 주식회사 서남 | 초전도 선재 제조방법 및 그에 의해 제조된 초전도 선재 |
JP6104757B2 (ja) * | 2013-08-27 | 2017-03-29 | 昭和電線ケーブルシステム株式会社 | 酸化物超電導線材及びその製造方法 |
CN108369842B (zh) * | 2015-11-11 | 2020-01-21 | 住友电气工业株式会社 | 超导线 |
DE112016007398T5 (de) * | 2016-10-31 | 2019-07-25 | Sumitomo Electric Industries, Ltd. | Supraleitender Draht und supraleitende Spule |
JP6743233B1 (ja) * | 2019-03-28 | 2020-08-19 | 株式会社フジクラ | 酸化物超電導線材 |
WO2021054094A1 (ja) * | 2019-09-20 | 2021-03-25 | 住友電気工業株式会社 | 永久電流スイッチ及び超電導装置 |
CN115362514B (zh) * | 2020-04-06 | 2023-03-21 | 株式会社藤仓 | 氧化物超导线材及超导线圈 |
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JPS6223118A (ja) | 1985-07-24 | 1987-01-31 | Hitachi Ltd | 半導体装置 |
WO1999033122A1 (de) * | 1997-12-19 | 1999-07-01 | Siemens Aktiengesellschaft | SUPRALEITERAUFBAU MIT HOCH-Tc-SUPRALEITERMATERIAL, VERFAHREN ZUR HERSTELLUNG DES AUFBAUS SOWIE STROMBEGRENZEREINRICHTUNG MIT EINEM SOLCHEN AUFBAU |
US6828507B1 (en) * | 1999-07-23 | 2004-12-07 | American Superconductor Corporation | Enhanced high temperature coated superconductors joined at a cap layer |
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JP3854551B2 (ja) * | 2002-08-06 | 2006-12-06 | 財団法人国際超電導産業技術研究センター | 酸化物超電導線材 |
JP4422959B2 (ja) | 2002-11-18 | 2010-03-03 | 昭和電線ケーブルシステム株式会社 | Y系テープ状酸化物超電導体の製造方法 |
US7365271B2 (en) * | 2003-12-31 | 2008-04-29 | Superpower, Inc. | Superconducting articles, and methods for forming and using same |
JP2006027958A (ja) * | 2004-07-16 | 2006-02-02 | Sumitomo Electric Ind Ltd | 薄膜材料およびその製造方法 |
US7247340B2 (en) * | 2005-12-28 | 2007-07-24 | Superpower, Inc. | Method of making a superconducting conductor |
JP2007311194A (ja) * | 2006-05-18 | 2007-11-29 | Sumitomo Electric Ind Ltd | 超電導薄膜材料および超電導薄膜材料の製造方法 |
US7627356B2 (en) * | 2006-07-14 | 2009-12-01 | Superpower, Inc. | Multifilament AC tolerant conductor with striated stabilizer and devices incorporating the same |
CN101162626A (zh) * | 2006-10-13 | 2008-04-16 | 北京有色金属研究总院 | 一种双面高温超导薄膜多层结构及其制备方法 |
JP5270176B2 (ja) * | 2008-01-08 | 2013-08-21 | 公益財団法人国際超電導産業技術研究センター | Re系酸化物超電導線材及びその製造方法 |
CN103069595B (zh) * | 2010-06-24 | 2016-05-18 | 休斯敦大学体系 | 具有降低的ac损耗的多细丝超导体及其形成方法 |
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WO2013157286A1 (ja) | 2012-04-16 | 2013-10-24 | 古河電気工業株式会社 | 超電導成膜用基材及び超電導線並びに超電導線の製造方法 |
EP2728590A1 (en) * | 2012-04-16 | 2014-05-07 | Furukawa Electric Co., Ltd. | Substrate for superconducting film, superconducting wire, and superconducting wire fabrication method |
US9002424B2 (en) | 2012-04-16 | 2015-04-07 | Furukawa Electric Co., Ltd. | Superconducting film-forming substrate, superconducting wire, and superconducting wire manufacturing method |
EP2728590A4 (en) * | 2012-04-16 | 2015-08-26 | Furukawa Electric Co Ltd | SUPERCONDUCTING FILM SUBSTRATE, SUPERCONDUCTING WIRE AND METHOD FOR MANUFACTURING SUPERCONDUCTING WIRE |
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