Isovalent Bi3+ substitution induced structural and magnetic transitions in LaMnO3

Joseph, D. Paul; Lin, J. W.; Kumar, Neeraj; Chen, W.C.; Lin, J. G.

doi:10.1016/j.jmmm.2016.02.003

Cited by 11 publications

(11 citation statements)

References 45 publications

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“…Figure 2 represents the XRD patterns of sol-gel-derived Bi x La 1−x MnO 3+δ compounds. It is evident that all synthesized compounds are monophasic and no even traces of impurity phases are present at higher Bi 3+ concentrations, as was reported previously [23,25,27]. The Rietveld refinement of the XRD data confirmed the formation of trigonal perovskite structure with hexagonal setting R3c, which was previously reported [9,40].…”

Section: Resultssupporting

confidence: 85%

“…The similar trend was also observed in ref. [23]. The value of parameter a abruptly increases when x reaches 0.3.…”

Section: Resultsmentioning

confidence: 94%

“…However, the substitution of Bi 3+ by La 3+ ions can lead to smaller distortions and lower synthesis temperatures during the preparation of Bi-rich Bi x La 1−x MnO 3 solid solutions [22]. Quite a few articles have been reported regarding the Bi x La 1−x MnO 3 system prepared by solid state reaction [23][24][25][26][27] or by pulsed laser deposition [28]. The maximum substitution level of 0.65 at ambient conditions was observed [25].…”

Section: Introductionmentioning

confidence: 99%

“…However, the transition from orthorhombic to cubic structure when x = 0.3 [23] or from rhombohedral to trigonal structure for x = 0.4 [25] were also reported. Besides, different magnetic and transport properties of Bi x La 1−x MnO 3 solid solutions with different amount of Bi 3+ ions were determined as well [23][24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Novel synthetic approach to the preparation of single-phase BixLa1−xMnO3+δ solid solutions

Karoblis

Mažeika

Baltrūnas

et al. 2019

J Sol-Gel Sci Technol

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In this study, the Bi x La 1−x MnO 3+δ solid solutions (x from 0 to 0.65) were synthesized using sol-gel combustion method with citric acid as a fuel and complexing agent. It was shown that changes in chemical composition of the materials lead to the evolution of crystal structure, morphology, and magnetic properties. The thermal behavior of precursor gel was investigated by thermogravimetric and differential scanning calorimetry (TG-DSC) measurements. X-ray diffraction (XRD) analysis demonstrated that all samples were monophasic. The Rietveld analysis showed that the structure can be indexed by trigonal or cubic unit cell depending on Bi 3+ content. Scanning electron microscopy (SEM) was used to evaluate morphological features of the synthesized materials and revealed that Bi 3+ ions significantly promote growth of the grains. The sol-gel-derived Bi x La 1−x MnO 3+δ specimens were also characterized by FT-IR spectroscopy and magnetization measurements, which showed a clear correlation between magnetic properties and crystal structure of the materials.

show abstract

Section: Resultssupporting

confidence: 85%

“…The similar trend was also observed in ref. [23]. The value of parameter a abruptly increases when x reaches 0.3.…”

Section: Resultsmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Novel synthetic approach to the preparation of single-phase BixLa1−xMnO3+δ solid solutions

Karoblis

Mažeika

Baltrūnas

et al. 2019

J Sol-Gel Sci Technol

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“…Recently, a few reports on bismuth-substituted manganites came up with the possibility of tuning T C to RT and the extraordinary response to a low magnetic field (r 2 T) seen at 0.05 r x r 0.1. [11][12][13][14][15][16][17][18][19][20][21][22] The cause for such improvements in a narrow substitution range is still arguable and no precise explanation is available. The current article is an effort to answer the anomaly based on the chemical and electronic attributes of bismuth.…”

Section: Introductionmentioning

confidence: 99%

Sizable magnetic entropy change in bismuth-substituted La_0.75Bi_0.1Na_0.15MnO₃ manganite

Mendonca

Murari

Daivajna

2022

Phys. Chem. Chem. Phys.

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Elaboration and Characterization of Materials from the LaMnO₃–BiMnO₃ Binary System

Djahmoum¹,

Kechai²,

Marchet

2020

Physica Status Solidi (a)

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The study of the La(1‐x)BixMnO3 system is conducted using X‐ray diffraction (XRD) and electrical measurements. A continuous solid solution is evidenced for the LaMnO3 rich part of this system (x ≤ 0.6). According to the analyses of XRD results, a rhombohedral symmetry (R3¯c) is observed for x ≤ 0.4 and a cubic structure for x = 0.5. The structural study allows to determine an increase in the mean perovskite lattice parameter, together with a decrease in the rhombohedral angle up to a cubic symmetry for x = 0.5. For x > 0.6, the system is no more single‐phased. Impedance measurements are conducted for ceramics in a wide‐frequency range (100 Hz–1 MHz), between room temperature and 800 °C. The exponential decrease in the alternative current (AC) conductivities (σAC) and the room temperature values correspond to a semiconducting behavior. Direct current (DC) conductivity measurements (σDC) are also performed below room temperature (25 K < T < 300 K). The results evidence for a metal–insulator phase transition. For the exponential part of the σDC curves, the gap energy is between 0.1 and 0.2 eV, confirming the semiconductor behavior of these materials.

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Isovalent Bi3+ substitution induced structural and magnetic transitions in LaMnO3

Cited by 11 publications

References 45 publications

Novel synthetic approach to the preparation of single-phase BixLa1−xMnO3+δ solid solutions

Novel synthetic approach to the preparation of single-phase BixLa1−xMnO3+δ solid solutions

Sizable magnetic entropy change in bismuth-substituted La_0.75Bi_0.1Na_0.15MnO₃ manganite

Elaboration and Characterization of Materials from the LaMnO₃–BiMnO₃ Binary System

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Isovalent Bi3+ substitution induced structural and magnetic transitions in LaMnO3

Cited by 11 publications

References 45 publications

Novel synthetic approach to the preparation of single-phase BixLa1−xMnO3+δ solid solutions

Novel synthetic approach to the preparation of single-phase BixLa1−xMnO3+δ solid solutions

Sizable magnetic entropy change in bismuth-substituted La0.75Bi0.1Na0.15MnO3 manganite

Elaboration and Characterization of Materials from the LaMnO3–BiMnO3 Binary System

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Sizable magnetic entropy change in bismuth-substituted La_0.75Bi_0.1Na_0.15MnO₃ manganite

Elaboration and Characterization of Materials from the LaMnO₃–BiMnO₃ Binary System