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Electrochemistry and staging in La2CuO4+d

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Title

Electrochemistry and staging in La2CuO4+d

Author(s)

Blakeslee, P.
Birgeneau, R. J.
Chou, F. C.
Christianson, Rebecca J.
Kastner, M. A.
Lee, Y. S.

Description

Measurements are reported of the time dependence of the current during electrochemical oxidation and reduction at a fixed voltage of single crystals and ceramic samples of La2CuO4+d. Staging peaks in neutron measurements of the single crystals together with the electrochemical measurements and magnetization measurements confirm that stage n=6 corresponds to d=0.055 +/- 0.05, the high-d side of the oxygen-rich–oxygen-poor miscibility gap. Furthermore, stage n=4 occurs at a value of d consistent with d { n^(-1). For ceramic samples it is shown that two different superconducting compounds are formed depending on the oxidation voltage used.

Date Published

2018-03-26

Files

  • Download Christianson_Electrochemistry.pdf

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Olin College of Engineering

An undergraduate engineering institution exploring innovative approaches to engineering education since its founding in 1997.

1000 Olin Way
Needham, MA 02492
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