A new Li-conductor based on HTSC Pb2Sr2Y1−xCaxCu3O8+δ
✍ Scribed by Ph. Saint-Mard; M. Thibaut; A. Várez; C.J.D. Hetherington; E. Morán; M.A. Alario-Franco; C. León; J. Santamaría
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 477 KB
- Volume
- 66
- Category
- Article
- ISSN
- 0167-2738
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Polycrystalline Pb2Sr2Yl\_xCaxCu3Os+ 8 (PSYCCO) samples have been prepared without precursor (x=0.3-0.6). The samples exhibit a metallic normal-state conductivity, and the highest To(R=0 ) achieved is 70K. Regarding anisotropy, SQUID-magnetometry demonstrates the intermediate position of PSYCCO betw
We have prepared several samples of Pb2Sr2Yl-xCaxCu308+O with various well defined oxygen contents and studied their oxidation process by TGA and characterized them by X-ray and electron diffraction. For x = 0 the upper limit for ~ is found to be 1.9. We show that the oxidation process is accompanie