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Oxygen stoichiometry of low-temperature synthesized metastableT′-La2CuO4

Hord, R. and Pascua, G. and Hofmann, K. and Cordier, G. and Kurian, J. and Luetkens, H. and Pomjakushin, V. and Reehuis, M. and Albert, B. and Alff, L. (2013):
Oxygen stoichiometry of low-temperature synthesized metastableT′-La2CuO4.
26, In: Superconductor Science and Technology, (10), IOP Publishing, p. 105026, ISSN 0953-2048, [Online-Edition: http://dx.doi.org/10.1088/0953-2048/26/10/105026],
[Article]

Abstract

We have investigated the oxygen stoichiometry of low-temperature synthesized metastable T'-La2CuO4 bulk samples by neutron scattering. T'-La2CuO4 is the parent compound of electron-doped high-temperature superconductors that is chemically closest to the parent compound of the hole-doped superconductor T-La2CuO4. While usually all electron-doped cuprates require strong reduction to approach stoichiometry, the low-temperature synthesis directly yields fully stoichiometric compounds. This result makes low-temperature grown T'-La2CuO4 the ideal material to perform a comparison of the two parent compounds of hole- and electron-doped cuprates.

Item Type: Article
Erschienen: 2013
Creators: Hord, R. and Pascua, G. and Hofmann, K. and Cordier, G. and Kurian, J. and Luetkens, H. and Pomjakushin, V. and Reehuis, M. and Albert, B. and Alff, L.
Title: Oxygen stoichiometry of low-temperature synthesized metastableT′-La2CuO4
Language: English
Abstract:

We have investigated the oxygen stoichiometry of low-temperature synthesized metastable T'-La2CuO4 bulk samples by neutron scattering. T'-La2CuO4 is the parent compound of electron-doped high-temperature superconductors that is chemically closest to the parent compound of the hole-doped superconductor T-La2CuO4. While usually all electron-doped cuprates require strong reduction to approach stoichiometry, the low-temperature synthesis directly yields fully stoichiometric compounds. This result makes low-temperature grown T'-La2CuO4 the ideal material to perform a comparison of the two parent compounds of hole- and electron-doped cuprates.

Journal or Publication Title: Superconductor Science and Technology
Volume: 26
Number: 10
Publisher: IOP Publishing
Uncontrolled Keywords: Superconductivity
Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences > Material Science > Advanced Thin Film Technology
07 Department of Chemistry
07 Department of Chemistry > Fachgebiet Anorganische Chemie
Date Deposited: 09 Jan 2014 09:32
Official URL: http://dx.doi.org/10.1088/0953-2048/26/10/105026
Identification Number: doi:10.1088/0953-2048/26/10/105026
Funders: This work was supported by DFG (Deutsche Forschungsgemeinschaft) Grant Nos Al536/9 and Al560/9.
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