In-situ BaCoO3-BaCoO2 topotactic reactions probed by neutron diffraction
We propose here to study the BaCoO2+d-BaCoO2 « in-situ » topotactic reactions by neutron diffraction coupled with thermogravimetric measurements on the D1B high-flux diffractometer at the ILL. This study is part of the work of Aliou Diatta who has recently defended his PhD thesis. We request 3 days of beam-time to measure both BaCoO2+d-BaCoO2 topotactic reactions under reducing conditions (secondary vacuum) and oxidizing conditions (oxygen atmosphere). Note that neutron diffraction is required for this study in order to describe the oxygen (de)-intercalation process, which is almost invisible by x-ray diffraction. Additionally, D1B high-flux diffractometer is also strongly requested as such a proposal consists in a thermodiffraction study with a possible complex sequence of phase transitions. Finally note that this study tends to study the complete oxygen (de)-intercalation process in-situ contrary to most of the reports in the literature.
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DIATTA Aliou; Claire V. Colin and ROUQUETTE Jerome. (2019). In-situ BaCoO3-BaCoO2 topotactic reactions probed by neutron diffraction. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-24-633
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