Citation
Yahya, Ahmad Kamal and Abd Shukor, Roslan
(2003)
Synthesis and Formation of T11223 and T1223 High-Tc Superconductors.
Pertanika Journal of Science & Technology, 11 (1).
pp. 1-7.
ISSN 0128-7680
Abstract
The preparation methods of Tl2Ba2Ca2Cu30,o (T1l223) and
Tlo.5Pbo.5Sr1.6Ca.4Cu30g (TI2223) superconductors using a variety of starting
compositions and sintering temperatures are discussed. Single-phased Tl2223
with T, between 106 to 109 K can be prepared using T12Ba2C~Cu3010 and
Tl1.6Ba2C~4Cu3010as starting compositions in a non-closed system by heating
around 20 min at 910°C in flowing 02' Samples with Tl1223 major phase
(- 70%) can be prepared from Tlo.5Pbo.5SrI.6C~.4Cu30gcomposition with the
sample wrapped in gold foil and sintered in flowing oxygen at 940°C for 3
hours.
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