Skip to main content Accessibility help
×
Home
Hostname: page-component-544b6db54f-jcwnq Total loading time: 0.373 Render date: 2021-10-24T01:00:27.949Z Has data issue: true Feature Flags: { "shouldUseShareProductTool": true, "shouldUseHypothesis": true, "isUnsiloEnabled": true, "metricsAbstractViews": false, "figures": true, "newCiteModal": false, "newCitedByModal": true, "newEcommerce": true, "newUsageEvents": true }

Materials Aspects of Oxide Superconductors - Effect of Ambient Water on Superconductivity-

Published online by Cambridge University Press:  28 February 2011

K. Kitazawa
Affiliation:
Department of Industrial Chemistry, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113, Japan
K. Kishio
Affiliation:
Department of Industrial Chemistry, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113, Japan
T. Hasegawa
Affiliation:
Department of Industrial Chemistry, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113, Japan
A. Ohtomo
Affiliation:
Department of Industrial Chemistry, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113, Japan
S. Yaegashi
Affiliation:
Department of Industrial Chemistry, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113, Japan
S. Kanbe
Affiliation:
Department of Industrial Chemistry, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113, Japan
K. Park
Affiliation:
Department of Industrial Chemistry, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113, Japan
K. Kuwahara
Affiliation:
Department of Industrial Chemistry, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113, Japan
K. Fueki
Affiliation:
Department of Industrial Chemistry, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113, Japan
Get access

Abstract

It has been found that the chemical instability of Ba2LnCu3O7 causes some problems in the measurements of critical temperature and creates a highly resistive grain boundary contact which is the major cause of the low critical current density at the present moment. Firstly, measurements of the superconductive critical temperature could be seriously misled if based solely on resistive transition because apparent resistivity anomaly is observed due to electrochemical EMF which appears when the electrode contact is attacked by water. Secondly, the barrier nature of the grain boundary against charge carriers is significantly enhanced by the chemical attack of the boundary region with water and water/carbon dioxide in the annealing atmosphere. This leads to a further weakening of the Josephson weak link between polycrystalline grains in the high Tc oxide superconductors.

Type
Research Article
Copyright
Copyright © Materials Research Society 1988

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1. Fukuyama, H. and Hasegawa, Y., Proc. Yamada Conference'87 on Superconductivity in Highly Correlated Fermion System, Aug. 31-Sept. 3, 1987, Sendai, Japan.Google Scholar
2. Enomoto, Y., Suzuki, M., Murakami, T., Inukai, T. and Inamura, T., Jpn. J. Appl. Phys., 26, L661 (1981).CrossRefGoogle Scholar
3. Sleight, A.W., Gillson, J.L. and Bierstedt, P.E., Solid State Commun., 17, 27 (1975).CrossRefGoogle Scholar
Thanh, A.T.D., Koma, A. and Tanaka, S., Appl. Phys., 22, 205 (1980).CrossRefGoogle Scholar
5. Yan, M.F., Barns, R.L., O'Bryan, H.M. Jr, Gallagher, P.K., Sherwood, R.C. and Jin, S., Appl. Phys. Lett., 51, 532 (1987).CrossRefGoogle Scholar
6. Barns, R.L. and Laudise, R.A., Appl. Phys. Lett., 51, 1373 (1987)CrossRefGoogle Scholar
7. Kitazawa, K., Kishio, K., Hasegawa, T., Nakamura, O., Shimoyama, J., Sugii, N., Ohtomo, A., Yaegashi, S. and Fueki, K., presented at Yamada Conference of Superconductivity, Aug. 30-Sept. 3, 1987, Sendai, Japan, Jpn. J. Appl. Phys., 26(12) (1987) in press.Google Scholar
8. Jarrell, D.E., JeGuire, M.R.J., Chandrasekhar, B.S., Alterovitz, S.A., Aron, P.R. and Fagaly, R.L., Phys. Rev. B 35, 8797 (1987).Google Scholar
9. Kwak, J.F., Venturini, E.L., Ginley, D.S. and Fu, W., Proc. Intern. Workshop on Novel Superconductivity, Berkeley, June 22–26, 1987, in press.Google Scholar
10. Kishio, K., Sugii, N., Kitazawa, K. and Fueki, K., Jpn. J. Appl. Phys., 26, L466 (1987).CrossRefGoogle Scholar

Send article to Kindle

To send this article to your Kindle, first ensure no-reply@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about sending to your Kindle. Find out more about sending to your Kindle.

Note you can select to send to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be sent to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

Find out more about the Kindle Personal Document Service.

Materials Aspects of Oxide Superconductors - Effect of Ambient Water on Superconductivity-
Available formats
×

Send article to Dropbox

To send this article to your Dropbox account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Dropbox.

Materials Aspects of Oxide Superconductors - Effect of Ambient Water on Superconductivity-
Available formats
×

Send article to Google Drive

To send this article to your Google Drive account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Google Drive.

Materials Aspects of Oxide Superconductors - Effect of Ambient Water on Superconductivity-
Available formats
×
×

Reply to: Submit a response

Please enter your response.

Your details

Please enter a valid email address.

Conflicting interests

Do you have any conflicting interests? *