Features of magnetic properties of La x MnO3 + δ (0.815 ≤ x ≤ 1.0)

Тарасенко, Т. Н.; Mazur, Anton S.; Linnik, A. I.; Dovgii, V. T.; Маковецкий, Г. И.; Yanushkevich, K. I.

doi:10.1134/s1063783411050301

Cited by 5 publications

(3 citation statements)

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“…Measuring χ″(T) at different frequencies of the modulating magnetic field showed there were no signs of spin glass in LaMnO 3 (see Fig. 2a), as in [4,5]. Adding bismuth significantly modified the shape of dependence χ″(T) (Figs.…”

Section: Methodsmentioning

confidence: 87%

“…In samples synthesized using the sol-gel technique, the maxima of χ″ corresponding to the FM-PM phase transition shifted to the temperature range of 150-170 K; this corresponded to a Mn 4+ concentration of 16-18%, according to the phase diagram in [5]. The temperature range of the maxima was virtually independent of the Bi concentration.…”

Section: Methodsmentioning

confidence: 93%

“…2a, the initial manganite LaMnO 3 obtained via the solgel technique had two sharp maxima corresponding to two clearly distinguished FM phases with Curie points at T C ~ 113 and ~127 K. This composition was magnetically more homogeneous than the LaMnO 3 samples made by via solid-state synthesis [4,5]. According to the phase diagram proposed in [5], these T C values correspond to Mn 4+ concentrations of 12-14%. Measuring χ″(T) at different frequencies of the modulating magnetic field showed there were no signs of spin glass in LaMnO 3 (see Fig.…”

Section: Methodsmentioning

confidence: 99%

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Synthesis, microstructure, the complex nature of the magnetic state of lanthanum manganite weakly doped by bismuth

Тарасенко

Kravchenko

Burkhovetskyi

et al. 2017

Bull. Russ. Acad. Sci. Phys.

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Structural, magnetic, and resonance studies of Bi x La 1 -x MnO 3 are performed. Nanopowders of weakly doped compounds (x = 0.0-0.1) with particle sizes of ≤40 nm are prepared using the sol-gel technique. Nanopowder sintering under the same conditions leads to a sharp increase in the mean granule size with increasing Bi concentration. The 55 Mn NMR signal of manganites prepared via solid synthesis corresponds to rapid exchange Mn 4+ ↔ Mn 3+ . Measurements of the magnetic susceptibility reveal an inhomogeneity in the ferromagnetic state of the Bi x La 1 -x MnO 3 system.

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Section: Methodsmentioning

confidence: 87%

Section: Methodsmentioning

confidence: 93%