Preparation of Bi2Sr2Can−1CunOy/NiO/Ni tapes by chemical solution method

✍ Scribed by Kyoji Murakami; Takuyo Nakamura; Shigeaki Yasuike; Toshinori Tokuda; Satoru Kishida

• Publisher: Elsevier Science
• Year: 2005
• Tongue: English
• Weight: 150 KB
• Volume: 426-431
• Category: Article
• ISSN: 0921-4534
• DOI: 10.1016/j.physc.2005.02.098

✦ Synopsis

We have prepared high quality Bi 2 Sr 2 Ca 1 Cu 2 O y (Bi-2212) tapes on polished NiO/Ni or Ag substrates using a chemical solution method of acetic acid metal salts, and investigated an optimum condition for the preparation of Bi-2212/ NiO/Ni tapes with c-axis orientation. From the results, we found that zero-resistance temperature (T C ) of the 35 lm thick tapes was about 72 K, and its critical current (I C ) increased with the thickness of the tapes. The T C and I C of the Bi-2212 tapes were improved by increasing their thickness. The I C of the 28 lm thick Bi-2212 tape was more than 800 mA at 30 K and 0 T. However, the T C of Bi-2212/Ag tapes was about 84 K, and decreased on the nickel plate. Since the decrease of T C may be due to nickel magnetization effect, the use of the nickel substrates in the preparation of Bi-2212 tapes is thought to be disadvantageous.