Abstract
We have succeeded in synthesizing a new intercalation compound Bi2Sr2(Gd0.82Ce0.18)2Cu2O10+δI with stage-1 structure. The increase in spacing between the BiO-BiO double layers through the iodine intercalation is 3.7 Å. The electrical resistivity and superconductivity have been investigated for iodine-intercalated samples of Bi2Sr2(Gd0.82Ce0.18)2Cu2O10+δIx with 0≦x≦1 and bromine-intercalated ones of Bi2Sr2(Gd0.82Ce0.18)2Cu2O10+δBrx with 0≦x{less-than or approximate}0.2. It has been found that non- superconducting assintered samples of Bi2Sr2(Gd0.82Ce0.18)2Cu2O10+δ become superconducting at low temperatures below about 20 K through the light bromine intercalation. This suggests that the role of annealing under high pressures of oxygen in the appearance of superconductivity for the Bi-2222 phase is to supply the CuO2 sheets with enough hole carriers.
Original language | English |
---|---|
Pages (from-to) | 31-37 |
Number of pages | 7 |
Journal | Physica C: Superconductivity and its applications |
Volume | 224 |
Issue number | 1-2 |
DOIs | |
Publication status | Published - 1994 Apr 20 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering