Effect of Mixed Grinding on Superconductivity YBaCu Composite Oxide

  • Published : 1996.12.01

Abstract

Effect of mixed grinding with a planetary ball mill of starting materials before heat treatment on the crystal structure and superconduction properties in the YBaCu composite oxide was studied. The size reduction of powders too place in the early stage of grinding, followed by aggregation of the resultant fine particles. The uniformity of the composition in the mixture was improved with grinding, which later decreased in the crystal grain size and well distribution of twin phase in the sintered bodies. The critical current density of the sintered bodies obtained from the mixture ground for 60 minutes showed the maximum value about 150 A/$\textrm{cm}^2$, while critical temperatures were around 90K and were independent of the grinding time.

Keywords

References

  1. Z. Phys. v.B67 Alternate Structure for $Ba_2YCu_3O_7$ A. Reller;J. G. Bednorz;K. A. Muller
  2. Phys. Rev. Lett. v.58 Superconductivity at 93K in a New Mixed-Phase Y-Ba-Cu-O Compound System at Ambient Pressure M. K. We;J. R. Ashburn;C. J. Torng;P. H. Hor;R. L. Meng;L. Gao;Z. J. Huang;Y. Q. Wang;C. W. Chu
  3. Jpn. J. Appl. Phys. v.27 Critical Current Density of Wire Type Y-Ba-Cu Oxide Superconductor Y. Yamada;N. Fukushima;S. Nakayama;H. Yoshino;S. Murase
  4. Mater. Lett. v.7 Two-step Calcination Method for Preparing $YBa_2Cu_3O_{7-x}$ Powders E. Ruckenstein;N. L We
  5. J. Am. Ceram. Soc. v.74 Effect of Purity of Raw Materials and Processing on the Microstructure and Properties of High-$T_c$ $Ba_2YCu_3O_{7-x}$ P. Dumas;J. A. T. Taylor
  6. J. Ceram. Soc. Jpn v.96 Preparation of Superconducting $YBa_2Cu_3O_{7-x}$ Powders by Ball Milling and Their Properties T. Motai;N. Ichinose
  7. J. Lee-Common Metals v.168 Intergranular Phases in Cyclically Annealed $YBa_2Cu_3O_{7-x}$ Implications for Critical Current Densities A. P. Clarke;R. B. Schwarz;J. D. Thompson
  8. Chemistry in Britain v.23 Superconductivity Returns to Chemistry P. P. Edwards;M. R. Harrison;R. Jones
  9. Phys. Rev. v.B36 Oxygen Ordering and the Orthorhombic-to-Tetragonal Phase Transition in $YBa_2Cu_3O_{7-x}$ J. D. Jorgensen;M. A. Beno;D. G. Hinks;L. Soderholm;K. J. Volin;R. E. Hitterman;J. D. Grace;I. K. Schuller
  10. Mater. Lett. v.6 Synthesis of Y-Ba-Cu-O Superconductors from $Y_2O_3$, BaO₂, and Cu₂O: the Optical Oxygen Treatment M. Kao
  11. Supercond. Sci. Technol. v.2 Distribution of Second Phases in the Ceramic Superconductor YBCO T. Zhang;K. Wang;L. Zhou;S. Wang
  12. Adv. Ceram. Mater. v.2 Powder Processing for Microstructural Control in Ceramic Superconductors M. J. Cima;W. E. Rhine
  13. J. Cryst. Growth v.89 Composition Control of the Microstructure of $Ba_2YCu_3O_{6+x}$ J. E. Blendell;C. A. Handwerker;M. D. Vaudin;E. Fuller
  14. Jpn. J. Appl. Phys. v.26 Characterization and Critical Current Density Determination on High-$T_c$ Superconductor Ba-Y-Cu Oxide T. Hioki;A. Oota;M. Okubo;T. Naritake;J. Kawamoto;O. Kamigaito
  15. J. Am. Ceram. Soc. v.71 Effect of Milling Medium on the Properties of Superconducting $YBa_2Cu_3O_{7-x}$ S. X. Dou;H. K. Liu;A. J. Bourdillon;J. P. Zhou;N. X. Tan;X. Y. Sun;C. C. Sorrell
  16. Appl. Phys. Lett. v.51 Annealing treatment Effects on Structure and Superconductivity in $Y_1Ba_2Cu_3O_{9-x}$ R. Beyers;G. Lim;E. M. Engler;V. Y. Lee;M. L. Ramirez;R. J. Savoy;R. D. Jacowitz
  17. J. Electron Microsc. v.38 Insitu Observation of Oxygen K-Edge Fine Structure of $YBa_2Cu_3O_{7-y}$ by EELS D. Shindo;K. Hiraga;M. Hirabayashi;M. Kikuchi;Y. Syono;S. Furuno;K. Houjou;T. Soga;H. Otsu