Dependence of oxygen desorption kinetics on processing methods of SrCoO2.5

Narayanan, Aswathy M.; Umarji, A.M.

doi:10.1007/s12034-020-02329-7

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2023

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“…Refinement of the oxidized phase used a tetragonal crystal structure with space group of I4/mmm as a data model from the International Center for Diffraction Data with ID number 04-013-7344. The tetragonal model was used instead of cubic perovskite because there is a splitting peak at a position of about 47.3˚ [14]. The results of refinement of the oxidized phase can be seen in Table 2.…”

Section: Resultsmentioning

confidence: 99%

Crystal Structure and Magnetic Properties of SrCoO<sub>3-δ</sub> with Oxygen Deficiency (δ ≈ 0.23)

Qori’

Akbar

Nugraha

et al. 2023

MSF

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We report a synthesis route to form a stable powder of SrCoO3-δ which show ferromagnetic component at room temperature. The powder was obtained from brownmillerite SrCoO2.5 using chemical oxidation. The x-ray diffraction pattern of the oxidized powder was best fitted using a tetragonal structure of I4/mmm with lattice constants of a = b = 10.87 Å, c = 7.664 Å and its oxygen content of 2.77 (δ 0.23) was measure by iodometric titration. In spite of a single-phase structure, the elemental compositions of oxidized powder characterized by the EDX measurement showed the presence of oxidation elements that might contribute to magnetic impurities at low temperatures. The powder nevertheless can be used for magnetic applications at room temperature.

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Section: Resultsmentioning

confidence: 99%