ISSN:
1573-7357
Keywords:
74.72 Hf
;
74.80 Bj
;
74.25 Ha
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract We have obtained superconducting Bi2Sr2CaCu2O8+x ceramic compounds with a grain structure that consists of needle-like particles of about 1.5 mm in length and 100 μm in diameter, which seem to be formed by flake-like small grains. The Bi(2212) compound has been prepared following the polymer solution synthesis method. The thermal treatment used is a simplified version of the melt-textured growth process (MTG), with the sample placed in a zone of a simple tube furnace where the temperature gradient was about 15°C/cm. We have performed scanning electron microscopy (SEM) observations on the samples, before and after thermal treatment. In addition, we have measured the ac susceptibility of both samples to confirm their superconducting nature and critical temperatures of about 91 K.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF02397234
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