Altıntaş, Sevgi Polat2023-05-182023-05-182021Altintas, S. P. (2021). Structural and magneto-transport features of cobalt-substituted mixed-valence manganites. Journal of Materials Science: Materials in Electronics, 32, 7176-7186.0957-45221573-482Xhttp://dx.doi.org/10.1007/s10854-021-05426-3https://hdl.handle.net/20.500.12491/10919We report the results of a detailed investigation of the role of cation substitution Co -> Mn on the structural, microstructural, magnetic, and transport properties of the manganite system La2/3Ca1/3Mn1-xCoxO3 (x = 0.0, 0.1, 0.2 and 0.3). It is found that the replacement of Mn with Co does not change the crystal structure of the parent compound La2/3Ca1/3MnO3 which crystallizes in orthorhombic structure with Pbnm space group. From a systematic analysis of the magneto-transport measurements, it has been shown that the cobalt substitution leads to a decrease in the system magnetization and lowering of Curie and metal-insulator transition temperatures. The magnetoresistance percentage (MR%), which is found to change significantly by Co substitution and exceeds 100% for x = 0.3 sample at low temperatures, is also reported at 1 T applied magnetic field.eninfo:eu-repo/semantics/closedAccessJahn–Teller SplittingX-ray DiffractionArticle10.1007/s10854-021-05426-3326717671862-s2.0-85101463081Q2WOS:000618140300005Q2