Microscopic mechanism to determine strain dependence of critical current for Yttrium-based high Tc superconducting film
确定钇基高温超导薄膜临界电流应变依赖性的微观机制
基本信息
- 批准号:22760522
- 负责人:
- 金额:$ 2.75万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Young Scientists (B)
- 财政年份:2010
- 资助国家:日本
- 起止时间:2010 至 2011
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Yttrium-based superconducting film exhibits reversible effect of strain on critical current. However, the origin of this phenomenon has not been clarified. In this study, we succeeded in evaluating strain dependence of critical current in magnetic field for YBCO film without grain boundaries grown on SrTiO_3 single crystal substrate by means of a 4-point bending method. As a result, the peak of the critical current at a certain applied strain was confirmed for a single-crystalline film similar with the practical biaxially-textured polycrystalline film. This suggests that lattice deformation within a grain contributes to the reversible effect of strain on critical current as well as strain at the grain boundaries. In addition, change in internal strain under tensile loading was directly evaluated along a-anb b-axes for Gd-based superconducting films with different strain sensitivity to critical current using synchrotron radiation based on X-ray diffraction technique. This experiment reveals that GdBCO film with small strain sensitivity orients its[110] direction parallel to the loading axis and induced strain along the a-and b-axes is smaller than the other film in which a-and b-axis orients to the conductor axis and width. As a result, it was clarified that difference in crystal orientation of superconducting film can be one of the microscopic origins to determine strain dependence of critical current.
钇基超导薄膜具有应变对临界电流的可逆影响。然而,这一现象的起源尚未澄清。本文采用四点弯曲法研究了在SrTiO_3单晶衬底上生长的无晶界YBCO薄膜的临界电流随应变的变化规律。结果,对于与实际双轴织构多晶膜类似的单晶膜,确认了在一定施加应变下的临界电流的峰值。这表明晶粒内的晶格变形有助于应变对临界电流以及晶界处的应变的可逆效应。此外,利用同步辐射X射线衍射技术,对不同应变敏感度的Gd基超导薄膜在拉伸载荷下沿沿着a轴和b轴的内部应变变化进行了直接测量。实验结果表明,应变灵敏度小的GdBCO薄膜的[110]方向平行于加载轴,沿a轴和b轴的感应应变沿着方向小于a轴和b轴平行于导体轴和宽度方向的薄膜。结果表明,超导薄膜晶体取向的差异可能是决定临界电流应变依赖性的微观原因之一。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
2-dimensional internal strain measurement using synchrotron radiation for REBCO coated conductor
使用同步辐射对 REBCO 涂层导体进行二维内应变测量
- DOI:
- 发表时间:2011
- 期刊:
- 影响因子:0
- 作者:長坂章秀;棚橋満;他2名;M. Sugano
- 通讯作者:M. Sugano
Reversible Strain Effect on Critical Current in GdBCO Coted Conductor with Different Orientations
不同取向GdBCO涂层导体临界电流的可逆应变效应
- DOI:
- 发表时间:2011
- 期刊:
- 影响因子:0
- 作者:冨田竜也;田中智也;棚橋満;菅野未知央;寺島岳史;M. Sugano;棚橋満;T.Terajima;M. Sugano
- 通讯作者:M. Sugano
Influence of crystal orientation of REBCO film on strain effect on critical current
REBCO薄膜晶体取向对临界电流应变效应的影响
- DOI:
- 发表时间:2011
- 期刊:
- 影响因子:0
- 作者:冨田竜也;田中智也;棚橋満;菅野未知央;寺島岳史;M. Sugano
- 通讯作者:M. Sugano
The effect of the 2D internal strain state on the critical current in GdBCO coated conductors
- DOI:10.1088/0953-2048/25/5/054014
- 发表时间:2012-05-01
- 期刊:
- 影响因子:3.6
- 作者:Sugano, Michinaka;Machiya, Shutaro;Saitoh, Takashi
- 通讯作者:Saitoh, Takashi
REBCO線材のひずみ特性に及ぼす超伝導膜結晶方位の影響
超导薄膜晶体取向对REBCO线材应变特性的影响
- DOI:
- 发表时间:2011
- 期刊:
- 影响因子:0
- 作者:冨田竜也;田中智也;棚橋満;菅野未知央
- 通讯作者:菅野未知央
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SUGANO Michinaka其他文献
SUGANO Michinaka的其他文献
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{{ truncateString('SUGANO Michinaka', 18)}}的其他基金
Study for optimal strain state for high temperature superconducting composite by using synchrotron radiation strain measurement at cryogenic temperature
低温同步辐射应变测量高温超导复合材料最佳应变状态研究
- 批准号:
24360281 - 财政年份:2012
- 资助金额:
$ 2.75万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Study on mechanism of strain effect on Ic for YBCO coated conductor using direct and indirect internal strain measurement
利用直接和间接内应变测量研究 YBCO 涂层导体应变对 Ic 影响的机制
- 批准号:
19760476 - 财政年份:2007
- 资助金额:
$ 2.75万 - 项目类别:
Grant-in-Aid for Young Scientists (B)
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- 批准号:
04855029 - 财政年份:1992
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59550061 - 财政年份:1984
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- 批准号:
59918003 - 财政年份:1984
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- 批准号:
X00120----985201 - 财政年份:1974
- 资助金额:
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