Effect of Li addition on structural, electrical and electrochemical properties on lanthanum manganite

Structural, magnetic and electronic properties on the Li-doped manganites

“…The data imply that the samples of xr0. 10 [23] obtained similar results, and they imputed the appearance of the impurity phases to limitation of Li solubility in La sub-lattice. Such limitation causes mismatch in the valence and ionic radius between Li and La.…”

Proton conduction of Ba6Mn24O48 tunnel manganite

“…The electron transfer in manganites is usually explained by a double exchange model involving electron hopping between Mn 3+ and Mn 4+ through the p-orbital of oxygen linking the manganese atoms. It should be noted that the activation energy of electron transfer, for example, in LnMnO 3 perovskites has almost the same order of magnitude as measured for the original and protonated Ba 6 Mn 24 O 48 [19]. Addition of Li into the A-site of LnMnO 3 perovskites without phase transition results in an enhancement of electronic conduction and reduction of the activation energy due to electron holes compensating the negative charge of lithium in lanthanum positions.…”

Metastability in the resistance of polycrystalline La0.8Li0.2MnO3

“…Magnetic fields of 13 T, 0.8 T, and 3 T, respectively, were used. Shih and Fung made observations to high temperature 13. The infrared optical properties 14 and ferromagnetic resonances 15 of LLMO have also been investigated.…”