ISSN:
1572-9605
Keywords:
Iodometric titration
;
superconductor
;
indicator
;
oxygen content
Source:
Springer Online Journal Archives 1860-2000
Topics:
Electrical Engineering, Measurement and Control Technology
,
Physics
Notes:
Abstract We present an improved double titration method for high-T c superconductors, in which the major step is adding KSCN as an indicator of the end point after the starch end point. By adding it, a greater amount of Na2S2O3 solution can be added after the starch end point, at least 0.12 ml. We found that adding KSCN can lead to precise measuring results and reduce the experimental error. The oxygen contents of two series of superconductors were determined by this approach. For YBa2Cu3O y , the errors are Δp∼0.003 and Δy∼0.005, which are lower than that of other reports.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00723530
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