Kaya, Ismail C.Akyildiz, Hasan2020-03-262020-03-2620181862-63001862-6319https://dx.doi.org/10.1002/pssa.201700795https://hdl.handle.net/20.500.12395/36891E-MRS Fall Meeting / Symposium N on Advanced Oxide Materials - Growth, Application, Characterization -- SEP 18-21, 2017 -- Warsaw, POLANDIn this study, Mg-doped CuCr1-xMgxO2 (x=0, 0.01, 0.03, 0.05) fibers are synthesized via electrospinning process followed by a two-step heat treatment in air and Ar atmospheres. The produced samples are all crystalline with a fiber diameter ranging from 120 to 140nm. The effect of Mg2+ substitution for Cr3+ on the structural, morphological, and optical properties of CuCrO2 fibers is investigated systematically. Structural characterizations indicate that the solubility limit of Mg2+ is around 3at.% and beyond this concentration the formation of MgO phase is observed. This also leads to the formation of Cu cations with ((+)2) oxidation state. In addition, the incorporation of Mg into the CuCrO2 lattice hinders the formation of perfect hexagonal-shaped isolated grains and contribute to the preservation of fiber morphology after the final sintering step. Further, the optical transmittance in the visible range decreases with increasing Mg-doping ratio. The corresponding optical band gaps are determined to be 3.53, 3.47, 3.30, and 3.22eV, respectively, for x=0, 0.01, 0.03, 0.05.en10.1002/pssa.201700795info:eu-repo/semantics/closedAccessCuCrO2electrospinningfibersMg-dopingArticle21516Q2WOS:000442349000001Q3