We have compared the magnetic behaviour of two identicaly shaped single crystals, TI2Ba2CaCu208 and Bi2Sr:CaCu20 s. The critical current density is found to decrease more rapidly with temperature in Bi-2212 although it is the highest in this material at low temperatures (T < 10K). I-V characteristic
Core-level photoemission study on a Bi-2212 single crystal
β Scribed by P. Srivastava; N.L. Saini; B.R. Sekhar; K.B. Garg
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 458 KB
- Volume
- 22
- Category
- Article
- ISSN
- 0921-5107
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Core-level photoemission spectra of the As 3d, Ga 3d and Bi 5d core levels were recorded for the Bi GaAs Ε½ . Ε½ . 111 A-2 = 2 surface. From the early stages of Bi growth, there are two distinct chemical environments for Bi. Surface Bi is bonded to both As and Ga atoms. The deposition of approximately
## Abstract Shaped single crystals of Bi:Gd~3~Ga~5~O~12~ (Bi = 0.102, 0.126 and 0.141 mol.%) and Bi:Y~3~Ga~5~O~12~ (Bi = 0.041, 0.047 and 0.061 mol.%) were grown by the microβpullingβdown method. Measured optical absorption spectra show an absorption band round 290 nm ascribed to the lowest energy
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