The effect of oxygen stoichiometry on electrical transport and magnetic properties of La0.9Te0.1MnOy

Abstract

The effect of the variation of oxygen content on structural, magnetic and transport properties in the electron-doped manganites La 0.9 Te 0.1 MnO y has been investigated. All samples show a rhombohedral structure with the space group C R

Electrical behavior of some silver-doped lanthanum-based CMR materials

“…The observed FMI behavior cannot be explained within the frame work of the double-exchange model because it predicts the coexistence of both FM as well as the metallic behavior. Therefore, the FM order at To114 K exhibited by the sample, LA-05 might have originated from the superexchange mechanism and in fact a similar conclusion was arrived at by Yang et al [15].…”

Influence of Al-doping on the structural, magnetic, and electrical properties of La0.8Ba0.2Mn1−Al O3 (0 ⩽ x ⩽ 0.25) manganites

“…When there are oxygen deficiency, the Mn 3+ /Mn 4+ percent are changed. Also, By increasing the content of oxygen deficiency, the e g electrons hopping probability and ferromagnetic region are reduced, that leads to decrease in the Curie temperature 48 . In other justification, annealing at higher temperature, the samples H0 lose more oxygen than L0 sample.…”

Correlation of Magnetoresistance and Thermoelectric Power in La1-xLixMnOy Compounds

“…the hopping of e g electrons between Mn 3+ and Mn 4+ ions mediated by oxygen anions. However, recent studies have proved that the strong Jahn-Teller type electron-phonon coupling [6], orbital degree of freedom [7,8], cation size mismatch [9][10][11], oxygen non-stoichiometry [12][13][14], etc. can strongly influence the behavior of these types of systems under the external conditions such as temperature, magnetic field, electric fields ….…”