Novel Measuring Method of Oxygen Content in La2-xSrxCuOy Superconductors with the Dissolved Oxygen Sensor

D. Zhang; S. Kambe; A. Tashiro; Y. Ohba; H. Mizuguchi; K. Ito; N. Kakizaki; Y. Okita

doi:10.4028/www.scientific.net/AMM.595.215

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 595Novel Measuring Method of Oxygen Content in...

Novel Measuring Method of Oxygen Content in La_2-xSr_xCuO_y Superconductors with the Dissolved Oxygen Sensor

Abstract:

It is known that Cu valence of cuprate superconductors govern transition temperature (T_c). For La₂_-xSr_xCuO_y, when x = 0.15, that is, Cu valence is 2.15, the highest T_c around 40K is achieved. The Cu valence is determined both by strontium and oxygen content. So far, coulometry and iodometry have been used for determining oxygen content. However, these chemical analyses usually require experience. The purpose of this research is to develop a novel measuring method of oxygen content in cuprate superconductors with a developed dissolved oxygen sensor. Signal received from the sensor is sent to PC automatically without any external power supply. Oxygen content obtained with the sensor was newly compared with iodometry. It was found that this method is reliable enough to determine oxygen content in La_2-xSr_xCuO_y, and is called dissolved oxygen method.

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Periodical:

Applied Mechanics and Materials (Volume 595)

Pages:

215-220

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.595.215

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Online since:

July 2014

Authors:

D. Zhang*, S. Kambe, A. Tashiro, Y. Ohba, H. Mizuguchi, K. Ito, N. Kakizaki, Y. Okita

Keywords:

Cu Valence, Dissolved Oxygen Method, Iodometry, LSCO, Oxygen Content, USB Transducer

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References

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