발간논문

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Vol.14, No.1, 101 ~ 102, 1976
Title
이광
Abstract
The equilibrium partial pressure of oxygen obtained by mixing CO₂and H₂gas was determined with (ZrO₂)_0.85 (CaO)_0.15 solid state cell by means of E.M.F. measurement and the compound of SrO-Fe₂O₃system was studied. The results obtained as follows 1) The oxygen partial pressure by E.M.F. measurement was consistent with that which was calculated from equilibrium data when the initial ratio of mixing was nearly 1 2) Sr₃Fe₂O_(7-x) was tetragonal. According to decreasing oxygen contents of this phase, lattice constant of a_o was increased and b_o was decreased. 3) The composition of SrFeO_(2.50－2.34) was rhombohedral single phase, SrFeO_(2.54－2.74) contained cubic and rhombohedral two phases, and SrFeO_2.74 was single cubic phase.
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