Structural and electrical properties of Ca doped BiFeO3 multiferroic nanomaterials prepared by sol-gel auto-combustion method

Sravani, G.M.; Murali, N.; Sekhar, B. Chandra; Dhanalakshmi, B.; Parajuli, D.; Naidu, T. Gunavardhana; Verma, Ritesh; Kumar, Rajesh; Krishan, Bal; Samatha, K.

doi:10.1016/j.jics.2022.100465

Cited by 12 publications

(3 citation statements)

References 23 publications

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“…An absorption band in the vicinity of 1060 cm −1 is observed in Figs. 6a-6c, attributing to the existence of the Bi-O bond in all the 23 On the other hand, Figs. 6d-6f shows the FTIR spectra obtained for the polycrystalline ceramic powders synthesized by the MSS method.…”

Section: Resultsmentioning

confidence: 96%

Influence of the Synthesis Process on the Physical Property Characteristics of BiFeO₃ Ceramics Prepared by Flux-based Molten Salt and Solid-state Reaction Route: A Comparative Study

Mitra,

Jahangeer,

Venkataraman

2024

ECS J. Solid State Sci. Technol.

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We report the influence of the solid-state reaction (SSR) and molten-salt synthesis (MSS) routes on the physical properties of the multiferroic BiFeO3 (BFO) compound exploited for capacitors and memory devices. Rietveld refinement reveals that the MSS-derived BFO ceramics have exhibited a pure-phase distorted rhombohedral perovskite structure at low temperatures (650℃) compared to the SSR method. Field-emission scanning electron microscopy illustrates the uniform distribution of spherical-shaped BFO grains. By altering the fabrication route, the calculated bandgap values of BFO were tuned within the range of (2.14±0.02) to (2.05±0.02) eV based on Tauc’s plot. The suppression of oxygen vacancies led to better dielectric characteristics at higher frequencies in the MSS-prepared BFO nanoceramics. Also, the MSS-derived BFO ceramics possessed a typical canted-AFM loop with a higher MR value of ~2.73 x 10-2 emu/g. These observations suggest that fabrication techniques have a decisive effect on the phase formation kinetics and multiferroic properties of BFO ceramics.

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Section: Resultsmentioning

confidence: 96%

Influence of the Synthesis Process on the Physical Property Characteristics of BiFeO₃ Ceramics Prepared by Flux-based Molten Salt and Solid-state Reaction Route: A Comparative Study

Mitra,

Jahangeer,

Venkataraman

2024

ECS J. Solid State Sci. Technol.

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“…In summary, this study explored the impact of chromium substitution on the magnetic and magnetostrictive properties of cobalt ferrite nanoparticles synthesized using the sol-gel autocombustion process [40]. In general, substituting one metal ion for another can affect the overall properties of the material.…”

Section: Discussionmentioning

confidence: 99%

Magnetic and Magnetostrictive Properties of Sol–Gel-Synthesized Chromium-Substituted Cobalt Ferrite

Beera,

Dhanalakshmi,

Devi

et al. 2023

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Chromium (Cr)-doped cobalt ferrite nanoparticles were synthesized using a sol–gel autocombustion method, with the chemical formula CoCrxFe2xO4. The value of x ranged from 0.00 to 0.5 in 0.1 increments. X-ray diffraction analysis confirmed the development of highly crystalline cubic spinel structures for all samples, with an average crystallite size of approximately 40 to 45 nm determined using the Scherrer equation. Pellets were prepared using a traditional ceramic method. The magnetic and magnetostrictive properties of the samples were tested using strain gauge and VSM (vibrating sample magnetometer) techniques. The results of the magnetic and magnetostrictive tests showed that the chromium-substituted cobalt ferrites exhibited higher strain derivative magnitudes than pure cobalt ferrite. These findings indicated that the introduction of chromium into the cobalt ferrite structure led to changes in the material’s magnetic properties. These changes were attributed to anisotropic contributions, resulting from an increased presence of Co2+ ions at B-sites due to the chromium substitutions. In summary, this study concluded that introducing chromium into the cobalt ferrite structure caused alterations in the material’s magnetic properties, which were explained by changes in the cationic arrangement within the crystal lattice. This study successfully explained these alterations using magnetization and coercivity data and the probable cationic dispersion.

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“…Structural, electronic, and optical parameters for cubic perovskite BaCeO 3 were calculated, and its semiconducting nature was established (Murali et al 2021). The synthesis, followed by an investigation of structural and electric properties for Bi 1-x Ca x FeO 3 was performed, and the rhombohedral structure was confirmed (Sravani et al 2022).…”

Section: Introductionmentioning

confidence: 99%

Study of Structural Properties of Solar Energy Material CH3 NH3 PbX3 (X= I, Br and Cl) Perovskites and its Mixed Halides Using Density Functional Theory

Sharma,

Kaushik,

Thakur

et al. 2022

Nepal Journal of Science and Technology

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The present study has explored the electronic properties of Organic-inorganic mixed halide-based perovskites using density functional theory. The Quantum Espresso simulation package with PBE parameterization within the generalized gradient approximation (GGA) has been used in this work. The findings reveal that the addition of halogens (bromide and chlorine) to compound CH3NH3PbI3 for all the possible substituted halides may cause the shifting of energy bands in the band structure and thus change the bandgap. Hence, this calculation may be used to design perovskite solar cell material with varied electronic structure.

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Structural and electrical properties of Ca doped BiFeO3 multiferroic nanomaterials prepared by sol-gel auto-combustion method

Cited by 12 publications

References 23 publications

Influence of the Synthesis Process on the Physical Property Characteristics of BiFeO₃ Ceramics Prepared by Flux-based Molten Salt and Solid-state Reaction Route: A Comparative Study

Influence of the Synthesis Process on the Physical Property Characteristics of BiFeO₃ Ceramics Prepared by Flux-based Molten Salt and Solid-state Reaction Route: A Comparative Study

Magnetic and Magnetostrictive Properties of Sol–Gel-Synthesized Chromium-Substituted Cobalt Ferrite

Study of Structural Properties of Solar Energy Material CH3 NH3 PbX3 (X= I, Br and Cl) Perovskites and its Mixed Halides Using Density Functional Theory

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Structural and electrical properties of Ca doped BiFeO3 multiferroic nanomaterials prepared by sol-gel auto-combustion method

Cited by 12 publications

References 23 publications

Influence of the Synthesis Process on the Physical Property Characteristics of BiFeO3 Ceramics Prepared by Flux-based Molten Salt and Solid-state Reaction Route: A Comparative Study

Influence of the Synthesis Process on the Physical Property Characteristics of BiFeO3 Ceramics Prepared by Flux-based Molten Salt and Solid-state Reaction Route: A Comparative Study

Magnetic and Magnetostrictive Properties of Sol–Gel-Synthesized Chromium-Substituted Cobalt Ferrite

Study of Structural Properties of Solar Energy Material CH3 NH3 PbX3 (X= I, Br and Cl) Perovskites and its Mixed Halides Using Density Functional Theory

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Influence of the Synthesis Process on the Physical Property Characteristics of BiFeO₃ Ceramics Prepared by Flux-based Molten Salt and Solid-state Reaction Route: A Comparative Study

Influence of the Synthesis Process on the Physical Property Characteristics of BiFeO₃ Ceramics Prepared by Flux-based Molten Salt and Solid-state Reaction Route: A Comparative Study