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Citation: Gao Xiao-Hui, Gao De, Jiang Shu-Fen. Mechanism of the Bi-base2223 Superconducting Phase Formation and its Single Phase Bulk Material Preparation[J]. Acta Physico-Chimica Sinica, ;1996, 12(09): 825-829. doi: 10.3866/PKU.WHXB19960910 shu

Mechanism of the Bi-base2223 Superconducting Phase Formation and its Single Phase Bulk Material Preparation

1.
Department of Chemistry,Central-South University of Technology,Changsha 410083

Received Date: 25 March 1996
Available Online: 15 September 1996

Based on kinetic considerations, it is pointed out that 2201 phase can interact with CaO, CuO to form 2212 phase, subsequently, 2223 phase can be produced by interaction between 2212 and CaO, CuO. Meanwhile, it is proved by chemical kinetics that CaO plane entering unit cell of 2212 phase is the controlling step of 2223 phase formation. In addition, divided step method as well as seed additive techniqe have been adopted to Prepare the 2223-single phase bulk material.
- Mechanism of superconducting phases formation,
- 2223-single phase bulk,
- Kinetics
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