Skip to main content
SpringerLink
Log in

How to Optimize Critical Current Performance of RE123 Materials by Controlling Oxygen Content

  • Published:
MRS Online Proceedings Library Aims and scope

Abstract

Oxygen nonstoichiometry behaviors of REBa2Cu3Oy (RE123: RE= Nd, Sm, Eu, Gd, Dy. Ho and Y) compounds have been precisely determined by the thermogravimetric measurements. Dependence of oxygen content on temperature and oxygen partial pressure were found to slightly depend on the RE element. Thermodynamic quantities of oxygen, such as hO2 and sO2, also varied with RE element. Relationship between Tc and oxygen content is strongly dependent on the RE species. This suggests that pinnig effect due to the oxygen defects is different in each RE123 compound and, therefore, critical current properties of RE123 must be optimized by precise control of oxygen content as well as selection of suitable RE elements.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. For example; K. Kishio et al., Jpn. J. Appl. Phys. 26, L1226 (1987)

    Article  Google Scholar 

  2. T. B. Lindemer et al., J. Am. Ceram. Soc. 72, 1775 (1989).

    Article  CAS  Google Scholar 

  3. H. Kupfer, A. A. Zhukov, A. Will, W. Jahn, R. Meier-Hirmer, T. Wolf, V. I. Voronkova, M. Klaser and K. Saito, Phys Rev. B54, 644 (1996).

    Article  Google Scholar 

  4. T. Kagiyama, J. Shimoyama, K. D. Otzschi, K. Kishio, K. Kitazawa, N. Chikumoto and M. Murakami, Physica C341-348, 1445 (2000).

    Article  Google Scholar 

  5. M. Murakami, S. I. Yoo, T. Higuchi, N. Sakai, M. Watabiki, N. Koshizuka and S. Tanaka, Physica C235-240, 2781 (1994).

    Article  Google Scholar 

  6. H. Suematsu, H. Okamura, S. Nagaya and H. Yamauchi, Supercond. Sci. Technol. 12, 274 (1999).

    Article  CAS  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Department of Superconductivity, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan

    Jun-ichi Shimoyama, Shigeru Horii, Kenji Otzschi & Kohji Kishio

Authors
  1. Jun-ichi Shimoyama
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Shigeru Horii
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Kenji Otzschi
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. Kohji Kishio
    View author publications

    You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

Shimoyama, Ji., Horii, S., Otzschi, K. et al. How to Optimize Critical Current Performance of RE123 Materials by Controlling Oxygen Content. MRS Online Proceedings Library 689, 818 (2001). https://doi.org/10.1557/PROC-689-E8.18

Download citation

  • Published:

  • DOI: https://doi.org/10.1557/PROC-689-E8.18

Search

Navigation