Fig. 7.
Response of MgFe2-xCexO4 (x = 0.04, 0.08, 0.12) samples at different operating temperature. a&a1: MgFe1.96Ce0.04O4, b&b1: MgFe1.92Ce0.08O4, c&c1: MgFe1.88Ce0.12O4.
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