Origin of the multiferroicity in BiMn2O5 from first-principles calculations

Zhang, Jun; Xu, Bin; Li, X.F.; Yao, Kai; Liu, Z.L.

doi:10.1016/j.jmmm.2010.12.040

Cited by 23 publications

(14 citation statements)

References 37 publications

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“…Bi 12 MnO 20 shows the energy gap of *1.66 [6], which is wider than the BiMn 2 O 5 energy gap: the calculated E gap = 1.03 eV and the indirect band gap of *0.78 eV [21]. Impedance tests have shown marked dispersion of dielectric permittivity.…”

Section: Introductionmentioning

confidence: 90%

Electric relaxation and Mn3+/Mn4+ charge transfer in Fe-doped Bi12MnO20–BiMn2O5 structural self-composite

et al. 2016

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Fe-doped Bi 12 MnO 20 -BiMn 2 O 5 ceramics was sintered at 1130 K for 6 h in ambient air. Two centro-symmetric phases formed thermodynamically stable self-composite material that was deduced from X-ray pattern analysis. The lattice parameters were a = 10.147 (8) sites. The other relaxation occurred in the 170-220 K range, and it exhibited the following values: s 02 = 10 -11 s, and E A,2 = 0.27 eV. A disorder-related VRH polaron model was proposed for q DC (T) and for electric relaxation processes.

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Section: Introductionmentioning

confidence: 90%

Electric relaxation and Mn3+/Mn4+ charge transfer in Fe-doped Bi12MnO20–BiMn2O5 structural self-composite

et al. 2016

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“…One phase, BiMn 2 O 5 , consists of octahedrons and pyramids. The second phase, Bi 12 MnO 20 , is dominated by Bi ions and contains BiO 4 tetrahedrons . It is worth mentioning that Bi 12 MnO 20 phase is structurally related to the bismuth oxide, δ‐Bi 2 O 3, structure .…”

Section: Introductionmentioning

confidence: 99%

“…Bismuth manganite (BM) seems to be a promising material to study electrical features under pressure because of its specific features, that is, the occurrence of structural disorder, polaronic relaxation, a moderate energy gap, and magnetic ordering in a low-temperature range. [8][9][10][11] The actual structure of bismuth manganite depends on the applied technology. For example, perovskite BiMnO 3 structure was obtained when sintering was conducted under high hydrostatic pressure.…”

Section: Introductionmentioning

confidence: 99%

“…The second phase, Bi 12 MnO 20 , is dominated by Bi ions and contains BiO 4 tetrahedrons. 10,13,14 It is worth mentioning that Bi 12 MnO 20 phase is structurally related to the bismuth oxide, δ-Bi 2 O 3, structure. 15 Electrical features of ceramic 13,14,16 and single crystal 17 forms of the BiMn 2 O 5 compound were studied using broadband dielectric spectroscopy.…”

Section: Introductionmentioning

confidence: 99%

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Hydrostatic pressure influence on electric relaxation response of bismuth manganite ceramics

et al. 2020

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Electrical impedance of bismuth manganite ceramics was studied under ambient and high hydrostatic pressure. Local disorder of crystal lattice was confirmed using XRD and DSC. Two relaxation processes were discerned. One was attributed to small polarons, which showed a changeover from variable range hopping features related to Fermi glass and structural disorder to the nearest neighbor hopping behavior in higher temperature range related to uniform distribution of energy levels. Hydrostatic pressure shortened relaxation times that would be interesting for applications. The second process, which was assigned to the nearest neighbor hopping of polarons, also exhibited a changeover to glassy features in a high‐temperature range.

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“…The BiMn 2 O 5based component exhibited orthorhombic centrosymmetric Pbam symmetry. The BiMn 2 O 5 structure consisted of Mn 3+ O 5 square pyramids and Mn 4+ O 6 octahedrons [2,[13][14][15]. The XRD measurement showed that in the 0.98 PZT-0.02 BM, a phase transition occurs between two FE rhombohedral phases with point group symmetries of R3c and R3m [3].…”

Section: Introductionmentioning

confidence: 99%

The composition induced crossover in nonlinear dielectric response in (1 − x) Pb(Zr0.70Ti0.30)O3–x BiMn2O5 (x = 0, 0.02, 0.055, 0.11, 0.15, 0.22, and 1) ceramics

2020

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Ceramics based on lead zirconate-titanate Pb(Zr 0.70 Ti 0.30)O 3 (PZT), bismuth manganite (BM) and the composite (1 − x) PZT-x BM were obtained. A systematic study of linear and nonlinear dielectric susceptibilities temperature and frequency dependences was conducted. A composition-induced crossover in nonlinear dielectric susceptibility was detected. The so-called scaled nonlinear susceptibility, a 3 , was obtained from experimental values of the real part of the linear and third-order nonlinear dielectric susceptibilities. The value for a 3 was negative for low BM content in the whole temperature range specific to discontinuous ferroelectric phase transitions and relaxor behavior. In contradiction, a 3 was positive for BM and for the composite with sufficiently high BM content. The positive a 3 was attributed to a subsystem of dipoles created by trapped charges. Hopping charge transfer, which is a dominant mechanism for conduction in manganites, is responsible for the positive a 3 and for the colossal magnitude of the imaginary part of the linear dielectric susceptibility. The concentration of the ions was determined using scanning electron microscopy. The chemical disorder and the precipitation of ions determined using time of flight-secondary ion mass spectrometry correspond to a crossover in the electrical features.

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Origin of the multiferroicity in BiMn2O5 from first-principles calculations

Cited by 23 publications

References 37 publications

Electric relaxation and Mn3+/Mn4+ charge transfer in Fe-doped Bi12MnO20–BiMn2O5 structural self-composite

Electric relaxation and Mn3+/Mn4+ charge transfer in Fe-doped Bi12MnO20–BiMn2O5 structural self-composite

Hydrostatic pressure influence on electric relaxation response of bismuth manganite ceramics

The composition induced crossover in nonlinear dielectric response in (1 − x) Pb(Zr0.70Ti0.30)O3–x BiMn2O5 (x = 0, 0.02, 0.055, 0.11, 0.15, 0.22, and 1) ceramics

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