ISSN:
1573-482X
Source:
Springer Online Journal Archives 1860-2000
Topics:
Electrical Engineering, Measurement and Control Technology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract Uniformly-distributed fine particles of the compositions Bi2Ca2Sr2Cu3O x and Bi1.8Pb0.2Ca2Sr2Cu3O x have been prepared by the spray-pyrolysis method. The particles produced were spherical and their size could be controlled from submicrometer to micrometer by changing the concentration of the metal nitrates in the starting aqueous solutions. The crystalline phases of these particles were found to be greatly dependent on the oxygen partial pressure in the carrier gas, as well as the decomposition temperature. In the Bi2Ca2Sr2Cu3O x particles, the 80 K superconducting phase was only formed at around 800° C in nitrogen or low oxygen partial pressure, while the formation of the 80 K phase was further suppressed in the Bi1.8Pb0.2Ca2Sr2Cu3O x particles.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00716016
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