Substitution-driven structural, optical and magnetic transformation of Mn, Zn doped BiFeO

Han, Yafei; Ma, Yuhui; Quan, Chuye; Gao, Ning; Zhang, Qiaoxia; Mao, Weiwei; Zhang, Jian; Yang, Junyu; Li, Xing’ao; Huang, Wei

doi:10.1016/j.ceramint.2014.10.065

Cited by 45 publications

(9 citation statements)

References 35 publications

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“…Figure 4b also shows that there is an extra mode at about 620 cm −1 appearing in the range from 600 to 650 cm −1 . A similar observation has been made by other groups [ 27–29 ] and therefore this extra Raman mode can be attributed to the distortion of the octahedra which are occupied by iron and zinc ions.…”

Section: Resultssupporting

confidence: 87%

“…[30,31] It is also expected that there is a magnetic Neel transition in the range from 600 to 660 K. Let us first recall that this magnetic transition is not usually accompanied by a change in the structural phase. Nevertheless, a static or a dynamic change related to the energetic relaxation caused by this type of transition could lead to a variation in the phonon behavior which affects directly the Raman spectra [27,[32][33][34][35] and therefore it makes possible to observe Néel temperature in case of BFO and doped BFO materials.…”

Section: Phase Crystal Structure and Morphology Of As-grown Powdersmentioning

confidence: 99%

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Effect of Zn Substitution on the Structural, Optical Properties and Photocatalytic Activity of BiFeO₃ Nanopowders

Taazayet

Zouari

Dkhil

et al. 2022

Physica Rapid Research Ltrs

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The multiferroic Zn‐doped BiFeO3 materials with nominal formula BiFe1−xZnxnormalO3 (0 ≤ x ≤ 0.08) are successfully synthesized using hydrothermal synthesis allowing to obtain powders with an average grain size of 8 nm. X‐ray diffraction and Raman spectroscopy analysis prove that nanopowders are pure and homogeneous and show an increase of the unit cell volume when the amount of Zn increases attesting of the substitution of Fe site. Using temperature‐dependent Raman spectroscopy, it is also found that the Néel antiferromagnetic critical temperature is weakly, if any, affected. In contrast, using UV–vis reflectance measurements, clear changes are observed in the features of the optical absorption with modifications of the crystal‐field when increasing the Zn amount. The photocatalytic activity of the pure and the most doped samples is evaluated by the degradation of the methylene blue dye under visible light irradiation. The photocatalytic activity of the Zn‐doped samples is found to be higher than that of BiFeO3. After 3 h of sunlight irradiation, the degradation efficiency increases from 61% to 83% for BiFeO3 and BiFe0.92Zn0.08O3, respectively. The crystal‐field modification after Zn substitution is considered as the principal cause of the obvious enhanced photocatalytic activity.

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Section: Resultssupporting

confidence: 87%

Section: Phase Crystal Structure and Morphology Of As-grown Powdersmentioning

confidence: 99%

Effect of Zn Substitution on the Structural, Optical Properties and Photocatalytic Activity of BiFeO₃ Nanopowders

Taazayet

Zouari

Dkhil

et al. 2022

Physica Rapid Research Ltrs

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“…Intrinsic BFO is an insulator with a wide bandgap of 2.5 eV, as reported by Yu et al [12]. The photo response of BFO nanoparticles can be extended in the ultraviolet and visible region due to the fact that the microstructure, chemical structure and defects can be improved by co-doping of rare earth metal ions and transitions metal ions [13]. Therefore there is an increased possibility of utilizing the ultraviolet and visible light for photocatalysis.…”

Section: Introductionmentioning

confidence: 88%

Structural, Optical and Multiferroic Properties of (Nd, Zn)-Co-doped BiFeO3 Nanoparticles

Shu

Wang

et al. 2017

J Supercond Nov Magn

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The pure BiFeO3(BFO) and (Nd, Zn) co-doped BFO nanoparticles were prepared by a sol-gel method. The crystal structure, optical and multiferroic properties of the samples were systematically investigated. Rietveld refinement showed that the samples crystallized in rhombhohedral R3c structure. In UV-Visible diffuse absorption spectra, an apparent blue shift can be observed after co-doping, which indicates a possible application in photocatalyst and photoconductive devices. Compared with pure BFO sample, the leakage current density of the x = 0.05 sample decreases about three orders of magnitude. The remanent magnetization (Mr) of the x = 0.10 sample reaches 0.105 emu/g while the coercive field (Hc) is as high as 7.0 kOe. The (Nd, Zn) co-doping into BFO nanoparticles has been proved to be an effective way to improve the optical and multiferroic properties.

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“…The doping of bigger ion Ba 2+ at A-site creates distortion in the rhombohedral structure by disturbing Fe-O-Fe angle. This type of structural distortion induced enhancement in magnetization has been observed for various ion doped BFO nanostructures [25,31]. It has also been reported that decreased degree of distortion of rhombohedral structure favors magnetic properties in terms of enhanced residual magnetization [9].…”

Section: Magnetic Studymentioning

confidence: 98%

Effect of Ba–Nb co-doping on the structural, dielectric, magnetic and ferroelectric properties of BiFeO3 nanoparticles

Godara

Kumar

2015

Ceramics International

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Substitution-driven structural, optical and magnetic transformation of Mn, Zn doped BiFeO

Cited by 45 publications

References 35 publications

Effect of Zn Substitution on the Structural, Optical Properties and Photocatalytic Activity of BiFeO₃ Nanopowders

Effect of Zn Substitution on the Structural, Optical Properties and Photocatalytic Activity of BiFeO₃ Nanopowders

Structural, Optical and Multiferroic Properties of (Nd, Zn)-Co-doped BiFeO3 Nanoparticles

Effect of Ba–Nb co-doping on the structural, dielectric, magnetic and ferroelectric properties of BiFeO3 nanoparticles

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Substitution-driven structural, optical and magnetic transformation of Mn, Zn doped BiFeO

Cited by 45 publications

References 35 publications

Effect of Zn Substitution on the Structural, Optical Properties and Photocatalytic Activity of BiFeO3 Nanopowders

Effect of Zn Substitution on the Structural, Optical Properties and Photocatalytic Activity of BiFeO3 Nanopowders

Structural, Optical and Multiferroic Properties of (Nd, Zn)-Co-doped BiFeO3 Nanoparticles

Effect of Ba–Nb co-doping on the structural, dielectric, magnetic and ferroelectric properties of BiFeO3 nanoparticles

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Effect of Zn Substitution on the Structural, Optical Properties and Photocatalytic Activity of BiFeO₃ Nanopowders

Effect of Zn Substitution on the Structural, Optical Properties and Photocatalytic Activity of BiFeO₃ Nanopowders