Rietveld refinement analysis and influence of individual phases on the magnetoelectrically coupled (1-x)BSZT+ xNCZGF multiferroic composites

Das, Bablu Chandra; Das, Harinarayan; Matin, Md. Abdul; Hossain, A. K. M. Akther

doi:10.1016/j.jallcom.2021.160632

Cited by 14 publications

(11 citation statements)

References 99 publications

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“…The χ 2 ((R wp /R exp ) 2 ) and GoF (R wp /R exp ) values were obtained as 2.90 and 1.70, respectively, and these parameters show the quality of refinement. The goodness fit parameters χ 2 and GoF are below 4, indicating the reliability of the refinement process [28,29] . The lattice constants were obtained by Rietveld refinement and these values are given in Table 1 comparatively.…”

Section: Resultsmentioning

confidence: 96%

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A Facile and Fast Synthesis of Barium Molybdate Nanoparticles: Effects of PH and Surfactant

Sarılmaz

2023

ChemistrySelect

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Barium molybdate (BaMoO4) is one of the materials used extensively in electronic and optical devices. Although there are many synthesis methods in the literature, a route for facile synthesis of nano‐BaMoO4 has been ignored. In this study, BaMoO4 nanoparticles were produced by the co‐precipitation method at room temperature within a short time. The effects of ammonia solutions and surfactants on the morphology of the particles were investigated. Various properties of these materials were characterized by XRD, SEM‐EDX, elemental mapping, TEM, and UV‐Vis analysis methods. Also, the crystal structure parameters and the compatibility of these values with the theoretical calculations were determined by Rietveld refinement. From the HR‐TEM image, the interplanar spacing was calculated as 3.2 Å. It was determined from these analyses that BaMoO4 particles with optical band gaps varying between 3.80 and 3.95 eV were produced in nano and micrometer sizes. It has been demonstrated by this study that the pH of the synthesis solution and the type of surfactant have significant effects on the morphological and optical properties of the materials.

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Section: Resultsmentioning

confidence: 96%

“…The goodness fit parameters χ 2 and GoF are below 4, indicating the reliability of the refinement process. [28,29] The lattice constants were obtained by Rietveld refinement and these values are given in Table 1 comparatively.…”

Section: Resultsmentioning

confidence: 99%

A Facile and Fast Synthesis of Barium Molybdate Nanoparticles: Effects of PH and Surfactant

Sarılmaz

2023

ChemistrySelect

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“…This substantial increase in ε′ cannot be solely attributed to dipolar polarization. Instead, the dominant effect in this low-frequency range is interfacial polarization, known as Maxwell/Wagner polarization. , It arises from structural inhomogeneities within the material, such as vacancy defects and dangling bonds. , Because of variations in the conductivity both within the grains and at the grain boundaries, polarization happens at the interfaces of the grain boundaries. This phenomenon leads to the stimulation of Maxwell/Wagner polarization in the samples, resulting in an exceptionally high dielectric constant.…”

Section: Results and Discussionmentioning

confidence: 99%

Preparation and Investigations of the Magnetoelectric Properties of (Ni_0.5Zn_0.5Fe₂O₄)_x [(Na_0.5Bi_0.5)_0.7Ba_0.3TiO₃]_1–x (x = 0.3, 0.5) Nanocomposite Ceramics for Magnetic Field Sensor Applications

Das,

Banerjee,

Bhakta

et al. 2024

ACS Appl. Nano Mater.

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A multiferroic nanocomposite was derived by considering Ni 0.5 Zn 0.5 Fe 2 O 4 (NZFO) and Ba-doped Na 0.5 Bi 0.5 TiO 3 (NBBTO) as the constituent components. Nanoparticles of (Na 0.5 Bi 0.5 ) 0.7 Ba 0.3 TiO 3 synthesized by the sol−gel technique were successfully incorporated into NZFO during its preparation. For this experiment, two distinct stoichiometric ratios were taken:). The X-ray diffractograms were subjected to Rietveld refinement, confirming the desired phase formation without any impurity. Images captured by field-emission scanning electron microscopy showed that particles are uniformly scattered with distinct spherical morphology. The lack of impurity elements was verified by energy-dispersive X-ray spectroscopy (EDAX), and EDAX mapping showed that the constituent elements were distributed uniformly. The magnetic moment variation from 300 to 50 K was analyzed to identify magnetic phases in the composites. The presence of nearly saturated loops was revealed in both composites by the zero-field-cooled and field-cooled magnetization data as a function of the temperature and magnetization versus field loops, as recorded by vibrating sample magnetometry (VSM). The maximum magnetization was observed to be 16.76 emu/g for NZFO-NBBTO-1 and 22.45 emu/g for NZFO-NBBTO-2 at 300 K. At 300 K, both composites exhibited good dielectric properties, with a dielectric strength of ∼320 and a low loss of ∼0.5. Direct observation of the ferroelectric loop indicated that NZFO-NBBTO-1 exhibited better ferroelectricity (P max ∼0.018 μc/cm 2 ) compared to NZFO-NBBTO-2 (P max ∼0.01 μc/cm 2 ). The magnetocapacitance coefficient was also higher in NZFO-NBBTO-1 (∼4%) than in NZFO-NBBTO-2 (∼3%). In general, the findings indicate that NZFO-NBBTO-1 shows great promise as a potential candidate for a magnetoelectric multiferroic material that could be used for the development of magnetic field sensors, spintronic devices, sensors, microelectronic devices, actuators, and electronic memory devices.

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“…This displacement indicates the lattice strain that occurs during the formation of the composites. Also, the shift of diffraction peaks corresponding to (311) of CuFe 2 O 4 and (101) of KNbO 3 toward a lower angle is due to the difference in the ionic radii between Cu 2+ (0.71 Å) and Fe 2+ (0.63 Å) ions in CuFe 2 O 4 and K 3+ (1.64 Å) and Nb 3+ (0.68 Å) ions in KNbO 3 respectively which leads to diffusion of ions in CuFe 2 O 4 –KNbO 3 matrix during sintering (Das & Das, 2021). However, the greater ionic radii between K 3+ (1.64 Å) and Nb 3+ (0.68 Å) ions in KNbO 3 will lead to structural distortion (Jain et al, 2020).…”

Section: Resultsmentioning

confidence: 99%

Strain‐mediated electrical and optical properties of novel lead‐free CuFe₂O₄–KNbO₃ nanocomposite solid solutions: A combined experimental and Density Functional Theory studies

Rajesh

Mamat

et al. 2022

Microscopy Res & Technique

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This article summarizes the strain‐mediated electrical and optical properties of novel lead‐free xCuFe2O4 (1 − x) KNbO3 (x = 0.2, 0.3, and 0.4) multiferroic nanocomposite through a solid state route. X‐ray diffraction analysis divulges the influence of interfacial strain in the KNbO3–CuFe2O4 matrix and shows the coexistence of orthorhombic and cubic spinel phases, respectively. Morphological analysis reveals that the average particle size of 0.3CuFe2O4–0.7KNbO3 is 25 nm which is smaller than the other two nanocomposites. The UV–visible absorption studies and Raman spectroscopy of 0.3CuFe2O4–0.7KNbO3 nanocomposite present the high energy bandgap and electro coupling of KNbO3 and CuFe2O4 phases. The DFT theoretical bandgap behaviors of all the three nanocomposites synchronize with the experimental bandgap results. Dielectric, ferroelectric and magnetoelectric behaviors are also improved in 0.3CuFe2O4–0.7KNbO3 nanocomposite as compared to pristine KNbO3 and the other two nanocomposites. Highlights This article summarizes the strain‐mediated electrical and optical properties of novel lead‐free xCuFe2O4–(1 − x) KNbO3 (x = 0.2, 0.3, and 0.4) multiferroic nanocomposite through a solid state route. X‐ray diffraction analysis divulges the influence of interfacial strain in the KNbO3–CuFe2O4 matrix and shows the coexistence of orthorhombic and cubic spinel phases, respectively. The 0.3CuFe2O4–0.7 KNbO3 nanocomposite shows a remarkable increase in the optical bandgap, remnant polarization, dielectric permittivity, and magnetoelectric coefficient compared to the other two nanocomposites. DFT calculations on KNbO3–CuFe2O4 matrix reveal the impact of diffusion between two phases and support the bandgap experimental results.

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Rietveld refinement analysis and influence of individual phases on the magnetoelectrically coupled (1-x)BSZT+ xNCZGF multiferroic composites

Cited by 14 publications

References 99 publications

A Facile and Fast Synthesis of Barium Molybdate Nanoparticles: Effects of PH and Surfactant

A Facile and Fast Synthesis of Barium Molybdate Nanoparticles: Effects of PH and Surfactant

Preparation and Investigations of the Magnetoelectric Properties of (Ni_0.5Zn_0.5Fe₂O₄)_x [(Na_0.5Bi_0.5)_0.7Ba_0.3TiO₃]_1–x (x = 0.3, 0.5) Nanocomposite Ceramics for Magnetic Field Sensor Applications

Strain‐mediated electrical and optical properties of novel lead‐free CuFe₂O₄–KNbO₃ nanocomposite solid solutions: A combined experimental and Density Functional Theory studies

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Rietveld refinement analysis and influence of individual phases on the magnetoelectrically coupled (1-x)BSZT+ xNCZGF multiferroic composites

Cited by 14 publications

References 99 publications

A Facile and Fast Synthesis of Barium Molybdate Nanoparticles: Effects of PH and Surfactant

A Facile and Fast Synthesis of Barium Molybdate Nanoparticles: Effects of PH and Surfactant

Preparation and Investigations of the Magnetoelectric Properties of (Ni0.5Zn0.5Fe2O4)x [(Na0.5Bi0.5)0.7Ba0.3TiO3]1–x (x = 0.3, 0.5) Nanocomposite Ceramics for Magnetic Field Sensor Applications

Strain‐mediated electrical and optical properties of novel lead‐free CuFe2O4–KNbO3 nanocomposite solid solutions: A combined experimental and Density Functional Theory studies

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Product

Resources

About

Preparation and Investigations of the Magnetoelectric Properties of (Ni_0.5Zn_0.5Fe₂O₄)_x [(Na_0.5Bi_0.5)_0.7Ba_0.3TiO₃]_1–x (x = 0.3, 0.5) Nanocomposite Ceramics for Magnetic Field Sensor Applications

Strain‐mediated electrical and optical properties of novel lead‐free CuFe₂O₄–KNbO₃ nanocomposite solid solutions: A combined experimental and Density Functional Theory studies