Crystal structure, magnetic and dielectric properties of Er-doped BiFeO3 ceramics

Rani, Sonia; Sanghi, Sujata; Agarwal, Ashish; Kumar, Ram; Singh, Ompal

doi:10.1007/s00339-022-05711-w

Cited by 10 publications

(4 citation statements)

References 51 publications

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“…The (018) diffraction peak gradually disappeared, and the (214) and (300) merge, and a new diffraction peak was observed at 59° for x = 0.2. These changes of diffraction peaks indicate that the crystal structure had transformed from R 3 c to Pnma , which is similar to earlier results [ 27 , 28 ]. Therefore, the diffraction peaks for x = 0.2 sample in Figure 1 a are indexed to the orthorhombic phase, which is an isomorph of LaFeO 3 (JCPDS No.…”

Section: Resultssupporting

confidence: 91%

Highly Sensitive Acetone Gas Sensors Based on Erbium-Doped Bismuth Ferrite Nanoparticles

Liu

Guo

et al. 2022

Nanomaterials

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The acetone-sensing performance of BiFeO3 is related to structural phase transformation, morphology and band gap energy which can be modulated by rare-earth ions doping. In this work, Bi1−xErxFeO3 nanoparticles with different amounts of Er doping were synthesized via the sol-gel method. The mechanism of Er doping on acetone-sensing performance of Bi1−xErxFeO3 (x = 0, 0.05, 0.1 and 0.2) sensors was the focus of the research. The optimal working temperature of Bi0.9Er0.1FeO3 (300 °C) was decreased by 60 °C compared to BiFeO3 (360 °C). The Bi0.9Er0.1FeO3 sample demonstrated the optimal response to 100 ppm acetone (43.2), which was 4.8 times that of pure BFO at 300 °C. The primary reason, which enhances the acetone-sensing performance, could be the phase transformation induced by Er doping. The lattice distortions induced by phase transformation are favorable to increasing the carrier concentration and mobility, which will bring more changes to the hole-accumulation layer. Thus, the acetone-sensing performance of Bi0.9Er0.1FeO3 was improved.

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Section: Resultssupporting

confidence: 91%

Highly Sensitive Acetone Gas Sensors Based on Erbium-Doped Bismuth Ferrite Nanoparticles

Liu

Guo

et al. 2022

Nanomaterials

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“…The peaks at 260 and 1009.2 cm −1 can be attributed to the lattice and stretching vibrations of the Mn-O bond. According to the Lorentz equation in OriginPro software [26] the deconvolution peaks of BiMnO 3 sum up to 52, close to that of the calculated 57 phonons [12,16], for the monoclinic phase reported elsewhere with the C2 space group ( C 2…”

Section: Resultssupporting

confidence: 77%

Nanomechanical-ferroelastics behavior, and the low-temperature ferroelectric manifestation of BiMnO₃ thin films

Umoh,

Gómez-Ovalle,

Cruz

et al. 2024

Phys. Scr.

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Ferroelastic-nanomechanical behavior of BiMnO3 thin films on (100) Nb-doped SrTiO3 substrate is studied at the nanoscale, for the first time using the theories of depth sensing indentation and finite element analysis. This was to understand the redirection of polarization in ferroelastic behavior using piezoelectric direct effect and applying a controlled local force by nanoindentation. The values of the nanomechanical properties Young’s modulus (E), hardness (H), and Stiffness (S) were measured to be E =142 ± 3 GPa, H= 8 ± 0.2 GPa, and S= 44072 ± 45 N/m respectively. Using the experimental mechanical properties, a finite element analysis was carried out to understand the relationship between the irreversible work vs. depth curve and plastic-deformation evolution of the thin film-interface-substrate system, associated with the pop-in observed. von Mises stress maps are presented to clearly illustrate the deformations, mechanical failures, and influences between the BiMnO3 film and the SrTiO3 Substrate. The ferroelastic range for BiMnO3 material was observed between 0 to 12 nm, and the yield strength was Y=2.6 ± 0.7 GPa. The ferroelectric properties through hysteresis curves were evaluated at two different temperatures of 200 K and 300 K in order to observe the effect of polarization with temperature. Providing better polarization performance at lower temperatures; Ps = 9.14 ±0.01 (μC/cm2), Pr = 2.23 ±0.02 (μC/cm2) and Hc = 0.77 kV/cm.

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“…Likewise, Rani et al investigated the effect of doping Er 3+ into BFO on its dielectric properties. The Er-doped BFO samples exhibited a marked improvement in their dielectric constant values (500 at RT/10 2 Hz for x = 0.15) that can be linked to a decrease in both O 2 vacancies and leakage current [ 99 ]. Conversely, different studies have been conducted on the effect of doping and substitution of the BFO B-site on its dielectric properties.…”

Section: Bismuth Ferritementioning

confidence: 99%

Recent Advances toward Enhanced Photocatalytic Proprieties of BiFeO3-Based Materials

Nassereddine,

Benyoussef,

Asbani

et al. 2023

Nanomaterials

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Owing to their remarkable success in photocatalytic applications, multiferroic BiFeO3 and its derivatives have gained a highly promising position as electrode materials for future developments of efficient catalysts. In addition to their appropriate band gaps, these materials exhibit inherent intrinsic polarizations enabling efficient charge carrier separation and their high mobility without the need for additional co-catalysts. Here, we review the existing strategies for enhancing the photocatalytic performances of BiFeO3-based materials and we describe the physico-chemical properties at the origin of their exceptional photocatalytic behavior. A special focus is paid to the degradation of organic pollutants and water splitting, both driven through photocatalysis to unveil the correlation between BiFeO3 size, substitution, and doping on the one hand and the photocatalytic performances on the other hand. Finally, we provide practical recommendations for future developments of high-performing BiFeO3-based electrodes.

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Crystal structure, magnetic and dielectric properties of Er-doped BiFeO3 ceramics

Cited by 10 publications

References 51 publications

Highly Sensitive Acetone Gas Sensors Based on Erbium-Doped Bismuth Ferrite Nanoparticles

Highly Sensitive Acetone Gas Sensors Based on Erbium-Doped Bismuth Ferrite Nanoparticles

Nanomechanical-ferroelastics behavior, and the low-temperature ferroelectric manifestation of BiMnO₃ thin films

Recent Advances toward Enhanced Photocatalytic Proprieties of BiFeO3-Based Materials

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Crystal structure, magnetic and dielectric properties of Er-doped BiFeO3 ceramics

Cited by 10 publications

References 51 publications

Highly Sensitive Acetone Gas Sensors Based on Erbium-Doped Bismuth Ferrite Nanoparticles

Highly Sensitive Acetone Gas Sensors Based on Erbium-Doped Bismuth Ferrite Nanoparticles

Nanomechanical-ferroelastics behavior, and the low-temperature ferroelectric manifestation of BiMnO3 thin films

Recent Advances toward Enhanced Photocatalytic Proprieties of BiFeO3-Based Materials

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Nanomechanical-ferroelastics behavior, and the low-temperature ferroelectric manifestation of BiMnO₃ thin films