Characterization of Ag/Bi2Sr2Can−1CunO2n+4 interfacial resistivity

✍ Scribed by Y. Fang; S. Danyluk; M.T. Lanagan; C.A. Youngdahl; X. Xu; K. Numata

• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 585 KB
• Volume: 252
• Category: Article
• ISSN: 0921-4534
• DOI: 10.1016/0921-4534(95)00498-x

✦ Synopsis

Silver contacts to single-crystal BizSr2CaCu20 x (Bi-2212) and polycrystalline (Bi,Pb)2Sr2Ca2Cu30 x (Bi-2223) were prepared by sputtering or sinter-forging techniques. The interfacial resistivity of Ag/Bi-2212, defined as interfacial resistance times contact area, decreased from 10 -4 to 10 -1° 12 cm 2 at 77 K when the thermal annealing time increased from 1 to 14 h at 600°C; it was also a function of the annealing temperature. The lowest interfacial resistivity of Ag/Bi-2223 that was sinter-forged at 840-845°C for 1 h was 10 -9 12 cm 2 at 77 K. Experimental data are compared with intrinsic interfacial resistivity and resistivity values found in the literature.