Synthesis, structural and electrical properties of Bi1−xDyxFeO3 multiferroic ceramics

Barbar, S. K.; Jangid, S.; Roy, M.; Chou, F. C.

doi:10.1016/j.ceramint.2012.12.041

Cited by 19 publications

(6 citation statements)

References 19 publications

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“…The variation in the coercive field for the different dopant concentrations may be arises due to the reduction of magnetocrystalline anisotropy or spontaneous magnetization [58]. As observed from figure 11 low magnetic coercive field and a high saturation magnetization is a new approach towards the soft magnetic material that may be helpful for magneto-optical and microwave device applications [59].…”

Section: Resultsmentioning

confidence: 92%

Influence of barium doping on structural and magnetic properties of bismuth ferrite thin films via spray pyrolysis method

Pani¹,

Sundaray²,

Sahoo³

et al. 2020

J. Phys. D: Appl. Phys.

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Single-phase Bi (1-x) Ba x FeO 3 (0.00 ⩽ x ⩽ 0.20) thin films are successfully deposited on glass substrates by using a spray pyrolysis method. Rietveld analysis of x-ray diffraction patterns confirms that the films are crystallized in a distorted rhombohedral perovskite structure with an R3c space group. No substantial changes in the structure are observed in the samples within the studied doping concentration. The energy dispersive spectroscopy pattern and morphology of the thin films are examined with field emission scanning electron microscopy. Raman modes confirmed slight structural distortions with the increase in Ba concentration. X-ray photoelectron spectroscopy of the thin films shows the effect of Ba 2+ in the formation of Fe 2+ defects and oxygen vacancies. The room temperature magnetic characterizations of the thin films are measured by using a vibrating sample magnetometer within a range of 10 kOe magnetic field. The values of saturation magnetization and the remnant magnetization are increased with an increase in Ba concentration as compared to the pure bismuth ferrite thin film. The optimum value of field-dependent saturation magnetization (2.4069 emu gm −1 ) and field-dependent remnant magnetization (0.6279 emu gm −1 ) are observed for Ba substituted bismuth ferrite samples with x = 0.10.

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Section: Resultsmentioning

confidence: 92%

Influence of barium doping on structural and magnetic properties of bismuth ferrite thin films via spray pyrolysis method

Pani¹,

Sundaray²,

Sahoo³

et al. 2020

J. Phys. D: Appl. Phys.

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“…Between 0.10 # x # 0.25 mixed phase Pnma and R3c materials are observed consistent with some of the previous studies. 11,13,14,[20][21][22] More in depth structural studies were performed using powder neutron and synchrotron diffraction experiments. Investigation of the x ¼ 0, 0.02 and 0.05 materials demonstrated reasonable ts to the R3c space group (see ESI †).…”

Section: Crystallographic Considerationsmentioning

confidence: 99%

“…11,12 However, despite numerous reports within the literature we still possess little understanding of the structural, electronic and magnetic properties on the insertion of Dy 3+ into the BiFeO 3 lattice. Some reports have suggested that the R3c phase is stable up to x ¼ 0.1, 11,13,14 whilst others have suggested much lower limits such as x ¼ 0.075 15 and 0.08 16,17 as well as higher limits including x ¼ 0.15 18 and 0.20. 19 The nature of this phase transition is also not well understood with non-polar GdFeO 3 -type Pnma, [20][21][22] polar Pn2 1 a 23 and antiferroelectric PbZrO 3 -type Pbnm 16,17 symmetries all suggested.…”

Section: Introductionmentioning

confidence: 99%

Strain driven structural phase transformations in dysprosium doped BiFeO₃ ceramics

et al. 2014

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“…, La 3? , etc., the enhancement in magnetic and electrical features of bismuth ferrite has significantly been improved [15][16][17][18]. Some investigators have also reported that the doping by several divalent ions such as Ca 2?…”

Section: Introductionmentioning

confidence: 99%

Structural, dielectric, impedance and ferroelectric properties of lead-free Bi(Fe0.85Dy0.15)O3 ceramic

Thansanga

Shukla

Kumar

et al. 2021

J Mater Sci: Mater Electron

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Nowadays, several research groups are extensively trying to develop by synthesizing and characterizing single/co-doped single-phase bismuth ferrite (BFO) in order to get a highly efficient eco-friendly multifunctional devices. In this process, this report is an attempt to provide the detailed studies of structural, dielectric, impedance and ferroelectric properties of Bi(Fe 0.85 Dy 0.15 )O 3 ceramic fabricated via the solid-state reaction method. Analysis of X-ray diffraction (XRD) data confirms a single phase of orthorhombic symmetry. The average crystallite (particle) size is found to be in the order of * 41 nm. The field emission scanning electron microscopy (FE-SEM) spectrum shows a homogeneous grain distribution of the sample. The elemental composition examined by means of energy dispersive X-ray spectroscopy (EDXS) shows the existence of constituent elements of the sample. The electrical measurements and analysis, carried out using a computer-controlled phase sensitive multimeter (PSM) in a frequency range of 1 kHz-1 MHz at different sets of temperature (25-325 °C), provide many interesting features to explain further conduction mechanism. The dielectric analysis exhibits high value of dielectric constant (e r ) and small value of dielectric loss (tand). Due to the effect of electronic and space charge polarization, the e r value falls with an increasing frequency. The frequency-temperature dependence of impedance and electrical modulus analysis reveals the presence of semiconductor nature and non-Debye type of relaxation process in the sample. The analysis of ac-conductivity (r ac ) with respect to frequency and temperature obeys the universal Jonscher's power law. The electric polarization study shows an enhancement in ferroelectric property of the material. Hence, based on the significant enhancement in electrical and ferroelectric properties of the Bi(Fe 0.85 Dy 0.15 )O 3 material, the material may be considered for some applications.

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Synthesis, structural and electrical properties of Bi1−xDyxFeO3 multiferroic ceramics

Cited by 19 publications

References 19 publications

Influence of barium doping on structural and magnetic properties of bismuth ferrite thin films via spray pyrolysis method

Influence of barium doping on structural and magnetic properties of bismuth ferrite thin films via spray pyrolysis method

Strain driven structural phase transformations in dysprosium doped BiFeO₃ ceramics

Structural, dielectric, impedance and ferroelectric properties of lead-free Bi(Fe0.85Dy0.15)O3 ceramic

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Synthesis, structural and electrical properties of Bi1−xDyxFeO3 multiferroic ceramics

Cited by 19 publications

References 19 publications

Influence of barium doping on structural and magnetic properties of bismuth ferrite thin films via spray pyrolysis method

Influence of barium doping on structural and magnetic properties of bismuth ferrite thin films via spray pyrolysis method

Strain driven structural phase transformations in dysprosium doped BiFeO3 ceramics

Structural, dielectric, impedance and ferroelectric properties of lead-free Bi(Fe0.85Dy0.15)O3 ceramic

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Strain driven structural phase transformations in dysprosium doped BiFeO₃ ceramics