Enhanced magnetoresistance properties of K-site deficient LaK□MnO manganites synthesized sol-gel, wet-mixing, and solid-state reaction methods.

The effect of synthesis methods on the structural, magnetic, electrical transport, and magnetoresistance (MR) properties of K-deficient LaK□MnO (LKMO) materials has been investigated. The compounds were synthesized sol-gel (SG), wet-mixing (WM), and solid-state (SS) reaction. The resulting ceramics were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS), and four point probe (FPP) techniques to evaluate their crystal structure, morphologies, elemental composition, electrical transport properties, and magnetoresistance (MR) behavior.