Structural and magnetic properties of self-doped perovskite manganites La0.8-xSr0.2MnO3−δ

Abstract

Effect of barium-deficiency on the structural, magnetic, and magnetocaloric properties of La0.6Sr0.2Ba0.2−xxMnO3 (0 ≤ x ≤ 0.15) J. Appl. Phys. 113, 073905 (2013); 10.1063/1.4792730 Investigation on the maximum content of vacancy at the B sites in La0.75Sr0.25Mn1− x O3 perovskite manganites

Structural and magnetic properties of La 0.7 Sr 0.1 Ag x MnO 3−δ perovskite manganites

“…Figure 1(a) shows the x-ray diffraction patterns for the La 0.7 Sr 0.1 Ag x MnO 3−δ samples, which are similar to those of self-doped manganites reported by our group, [23][24][25][26] indicate that the samples have two phases with the rhombohedral perovskite, R3c space group, being the dominant phase and tetragonal Mn 3 O 4 being the second phase. From Fig.…”

“…The XRD main peak areas (A P and A M ) of the perovskite phase and Mn 3 O 4 phase in the samples with the nominal composition La 0.7 Sr 0.1 Ag x MnO 3−δ ; the molar content y of Mn in Mn 3 O 4 phase, calculated from the XRD main peak area ratios Quantitative analyses of the two phases were performed using the main diffraction peak area ratios (see Table 1) obtained using the X'Pert HighScore Plus software. [23][24][25][26] We use the symbol "u" to designate the mass ratio of the Mn 3 O 4 phase to the perovskite phase. According to XRD theory we then have…”

“…Our group reported the structures and the magnetic property of self-doped manganites La 0.7−x Sr 0.3 Mn 1 O 3 , [23] La 0.8−x Sr 0.2 MnO 3 , [24] La 0.6−x Sr 0.4 MnO 3 , [25] and La 0.7 Sr 0.3−x MnO 3 . [26] We explained why there were Mn 3 O 4 second phase in those samples when self-doping level was higher than a certain level.…”

Microwave-assisted synthesis of defective Ca1−xAgxTi1−yCoyO3 with high photoelectrocatalytic activity for organic pollutant removal from water

“…7 CaTiO 3 has a wide band gap of about 3.5 eV and its activity is limited to UV excitation only. To improve the catalytic activity of CaTiO 3 in the full spectrum, a series of measures have been implemented by various researchers, including regulating morphology, 8 doping other elements, 9 structuring heterojunc-tion compounds, 10 optimizing using noble metals, 11 constructing crystal defects 12 and so on. Among these methods, element doping is considered the simplest and most effective way to enhance the photosensitivity of semiconductors.…”

Study of magnetic ordering in the perovskite manganites Pr0.6Sr0.4CrxMn1-xO3

“…[46][47][48][49][50] 2 were dissolved in dilute HNO 3 solution, and suitable amounts of citric acid and ethylene glycol were added as complexing agents until a completely homogeneous transparent solution was obtained. This solution was subjected to slow evaporation at 363 K in a water bath until a highly viscous residue was formed.…”