Effect of Adding on the Critical Current Density and Lateral Levitation Force of Bulk


SAVAŞKAN B., Koparan E. T. , Guner S. B. , Celik S., ÖZTÜRK K., Yanmaz E.

JOURNAL OF LOW TEMPERATURE PHYSICS, vol.181, pp.38-48, 2015 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 181
  • Publication Date: 2015
  • Doi Number: 10.1007/s10909-015-1325-7
  • Title of Journal : JOURNAL OF LOW TEMPERATURE PHYSICS
  • Page Numbers: pp.38-48

Abstract

We fabricated malic acid -added bulks by wet mixing and "Two-step solid state reaction method". The effects of adding malic acid on , behaviour and lateral levitation force features of bulk have been investigated. A systematic decrease in the critical temperature with increasing adding level confirms the substitution of C at the B site of . While the 4 wt% sample showed the best of at 4 T and 5 K, 15 wt% sample showed uncompetitive lower critical current density , which ascribes the poor connectivity due to the excessive unsubstituted C distribution at grain boundaries and the presence of high MgO amount. At 24 and 28 K, the 4 and 6 wt% malic-acid-added samples exhibit a higher lateral force than pure sample. Based on the observed values of M-H, (H) and lateral levitation force , it can be concluded that the 4 wt% malic-acid-added sample is the best of the studied samples.