Browsing by Author "WU, CL"

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CRITICAL-CURRENT ANISOTROPY AND FLUX-PINNING IN YBCO(001) AND YBCO(110) SUPERCONDUCTING THIN-FILMS PREPARED BY KRF PULSED-LASER ABLATION
(1993)
JUANG, JY
;
WU, KH
;
WANG, SJ
;
LAI, TC
;
KAO, RT
EFFECTS OF ZRO2 ON THE TEXTURING AND PROPERTIES OF MELT-PROCESSED Y1BA2CU3O7-DELTA
(1994-04-25)
JUANG, JY
;
WU, CL
;
WANG, SJ
;
CHU, ML
;
WU, KH
The addition of ZrO2 is found to be very effective as the nucleation sites to promote the oriented growth of Y1Ba2Cu3O7-delta (YBCO) during peritectic solidification. Extended regions of well-textured YBCO grains with superior superconducting properties of the YBCO bulk are readily obtained by a single-step melt process at much lower process temperatures. At 77 K, the platelike Josephson weak-link behaviors observed in pure melt-processed YBCO have been effectively eliminated, indicating that the coherency between the spherulitic superconducting YBCO grains may have been greatly improved by ZrO2 additions.