Investigating the effect of Cd-Mn co-doped nano-sized BiFeO 3 on its physical properties

Ishaq, B. Mohammed; Murtaza, Ghulam; Sharif, Shahzad; Khan, Muhammad Azhar; Akhtar, Naeem; Will, Iain; Saleem, Murtaza; Ramay, Shahid M.

doi:10.1016/j.rinp.2016.09.018

Cited by 11 publications

(4 citation statements)

References 41 publications

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“…The peak at 1384 cm –1 relates to NO 3 – left from un-reacted prelude salts . The existence of Cd is verified by FTIR spectra, which shows bands in the range between 1270 and 1641 cm –1 . A band between 3600 and 3000 cm –1 is consigned to the anti-symmetric and symmetric stretching vibrations of absorbed molecules of water at the surface of the material, which could be related to water molecules adsorbed on the surface .…”

Section: Results and Discussionmentioning

confidence: 84%

“… 21 The existence of Cd is verified by FTIR spectra, which shows bands in the range between 1270 and 1641 cm –1 . 22 A band between 3600 and 3000 cm –1 is consigned to the anti-symmetric and symmetric stretching vibrations of absorbed molecules of water at the surface of the material, which could be related to water molecules adsorbed on the surface. 19 These spectra reveal that in the case of substituted materials, no extra peak occur; instead, bands move to a lower wavenumber as the Er concentration increases, indicating that bending of the Fe–O and Bi–O bonds formed as a result of octahedron deformation with the Er substitution.…”

Section: Results and Discussionmentioning

confidence: 99%

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Optical, Photocatalytic, Electrochemical, Magnetic, Dielectric, and Ferroelectric Properties of Cd- and Er-Doped BiFeO₃ Prepared via a Facile Microemulsion Route

et al. 2023

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A series of Cd-and Er-doped bismuth ferrites were synthesized using a simple microemulsion technique. The influence of Cd and Er doping on the structural, ferroelectric, photocatalytic, and dielectric properties of bismuth ferrite (BFO) was examined in this research. The prepared materials were examined by Xray diffraction, Raman, scanning electron microscopy, and UV−vis techniques. The XRD patterns reflected the formation of a monophasic rhombohedral structure with the space group R3 − c and an average crystallite size calculated to be in the range of 29 to 32 nm. The saturation polarization (P s ), coercivity (H c ), and retentivity (P r ) of the materials were investigated by a hysteresis loop (P-E), and it was perceived that increasing the dopant contents improved the P s and P r values, which may be due to the variation of metal cation valence states. In accordance with the photoluminescence (PL) spectra, a highly substituted material displayed lower recombination and increased charge separation rate (e − −h + ), which eventually contributed to a higher photocatalytic degradation performance of the prepared NMs. Furthermore, as the frequency and dopant concentration increased, the dielectric loss decreased, which could be due to different types of polarization. Bi 1 − x Cd x Fe 1 − y Er y O 3 showed well-saturated hysteresis loops (P-E) with enhanced saturation polarization near 9.7 × 10 −4 μC•cm −2 . The remnant polarization of the BFO and BFOCE NPs was 2.26 × 10 −4 and 8.11 × 10 −4 μC• cm −2 , respectively, under a maximum electric field, which may be due to the variation of the metal cation valence states. The improved ferroelectric and dielectric properties of Bi 1 − x Cd x Fe 1 − y Er y O 3 NPs are attributed to the reduced concentration of defects, the different domain behavior, and the valence state of Cd and Er ions. The electrochemical (crystal violet (CV) and I−V) properties of Bi 1 − x Cd x Fe 1 − y Er y O 3 were all influenced by the dopant concentrations (Cd and Er). The synergistic effects of Cd and Er on the substituted material enhanced the specific capacitance in comparison to undoped BiFeO 3 . The photocatalytic activity to degrade CV under visible irradiation increased in BFOCE as the dopant (x,y) concentration increased from 0 to 0.25 by showing 84% dye degradation in comparison to pristine BiFeO 3 (53% only) within 120 min under visible light. Moreover, the stability of these prepared nanoparticles was confirmed using recycling experiments, with the results indicating that the synthesized nanomaterials demonstrated promising stability and reusability.

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Section: Results and Discussionmentioning

confidence: 84%

Section: Results and Discussionmentioning

confidence: 99%

Optical, Photocatalytic, Electrochemical, Magnetic, Dielectric, and Ferroelectric Properties of Cd- and Er-Doped BiFeO₃ Prepared via a Facile Microemulsion Route

et al. 2023

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“…Hence, dispersion is observed in all the samples at 2.5 GHz and higher frequencies, thus giving rise to the resonance phenomenon. The resonance phenomenon is observed at 2.5 GHz when the shifting frequency between Fe 2+ and Fe 3+ becomes equal to the applied AC frequency, resulting in the maximum power absorption responsible for the resonance peak [48,49].…”

Section: Dielectric Propertiesmentioning

confidence: 99%

Structural, Magnetic, and Dielectric Properties of Sn-Doped BiFeO3: Experiment and DFT Analysis

Farid

Murtaza

Flemban

et al. 2021

J Supercond Nov Magn

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The structural, magnetic, dielectric, and surface morphology of BiSn x Fe 1-x O 3 (x = 0.0 to 1.0) was analyzed experimentally. The samples were synthesized by a simple chemical micro-emulsion method. The X-ray diffraction (XRD) analysis reveals structural distortion at A site and B site of BFO due to Sn doping in rhombohedral phase. The EDX data certify Sn is well incorporated in BiFeO 3 . The effect of Sn doping on crystal size and grain size has also been addressed. The FTIR analysis elaborates absorption at 555 cm −1 which is due to stretching and bending vibrations of O-Fe-O bonds. The magnetic properties are illustrated by vibrating sample magnetometer (VSM). The magnetic moments and exchange mechanism described theoretically by DFT analysis which support the experimental results. The dielectric behavior of studied materials has been evaluated by dielectric constant (ɛʹ), tangent loss (tanδ), real and imaginary part of impedance, and Cole-Cole plots in 1-3 GHz. The spin-orientated magnetism and dielectric response increase their potential for microwave absorber and sensor.Keywords Room temperature ferromagnetism • Micro-emulsion method • Vibrating sample magnetometer * Q. Mahmood

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“…The doping of BFO film samples is being adequately studied . This research mainly includes A‐bit doping, B‐bit doping, and the co‐mixing of AB elements . The properties of BFO films can be improved by element doping.…”

Section: Introductionmentioning

confidence: 99%

Structure and electrical properties of Zn‐doped BiFeO₃ films

Shen

Zhang

Wang

et al. 2019

Int J Applied Ceramic Tech

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BiFe 1−x Zn x O 3 (x = 0, 0.5, 1, 1.5, 2 mol%) (BFZO) films were prepared on ITO/glass substrates by a sol-gel method. The effects of different Zn contents on the structures and electrical properties of the BFZO films were investigated. From X-ray diffraction (XRD), microstructure and X-ray spectroscopy (XPS) results, the BFZO films with a Zn content of 1 mol% showed a better crystal structure and grain development, and the Fe 2+ and oxygen vacancy concentrations in this sample were the lowest among all the evaluated BFZO films. The P-E hysteresis loop indicated that the BFZO films with 1 mol% Zn had the highest remanent polarization (2Pr), which was 82.4 μC/cm 2 , along with a coercive field (2E c ) of 887 kV/cm at the tested electric field of 857 kV/cm. The BFZO film with 1 mol% Zn had the lowest leakage current density, which was 3.54 × 10 −7 A/cm 2 at the tested electric field of 200 kV/cm. Both at high and low electric fields, the space charge-limited current (SCLC) conduction mechanism was the main leakage mechanism. When the test frequency was 10 5 Hz, the dielectric constant was 133, and the dissipation factor was 0.015. K E Y W O R D SBiFeO 3 films, electrical properties, sol-gel method, Zn doping ACKNOWLEDGMENT

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Investigating the effect of Cd-Mn co-doped nano-sized BiFeO 3 on its physical properties

Cited by 11 publications

References 41 publications

Optical, Photocatalytic, Electrochemical, Magnetic, Dielectric, and Ferroelectric Properties of Cd- and Er-Doped BiFeO₃ Prepared via a Facile Microemulsion Route

Optical, Photocatalytic, Electrochemical, Magnetic, Dielectric, and Ferroelectric Properties of Cd- and Er-Doped BiFeO₃ Prepared via a Facile Microemulsion Route

Structural, Magnetic, and Dielectric Properties of Sn-Doped BiFeO3: Experiment and DFT Analysis

Structure and electrical properties of Zn‐doped BiFeO₃ films

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Investigating the effect of Cd-Mn co-doped nano-sized BiFeO 3 on its physical properties

Cited by 11 publications

References 41 publications

Optical, Photocatalytic, Electrochemical, Magnetic, Dielectric, and Ferroelectric Properties of Cd- and Er-Doped BiFeO3 Prepared via a Facile Microemulsion Route

Optical, Photocatalytic, Electrochemical, Magnetic, Dielectric, and Ferroelectric Properties of Cd- and Er-Doped BiFeO3 Prepared via a Facile Microemulsion Route

Structural, Magnetic, and Dielectric Properties of Sn-Doped BiFeO3: Experiment and DFT Analysis

Structure and electrical properties of Zn‐doped BiFeO3 films

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Optical, Photocatalytic, Electrochemical, Magnetic, Dielectric, and Ferroelectric Properties of Cd- and Er-Doped BiFeO₃ Prepared via a Facile Microemulsion Route

Optical, Photocatalytic, Electrochemical, Magnetic, Dielectric, and Ferroelectric Properties of Cd- and Er-Doped BiFeO₃ Prepared via a Facile Microemulsion Route

Structure and electrical properties of Zn‐doped BiFeO₃ films