Chemical co-precipitation synthesis and properties of pure-phase BiFeO3

Wang, Xiaorui; Yang, Chengwei; Ding, Zhiyong; Wang, Zhanyong; Mu, Jin

doi:10.1016/j.cplett.2018.09.043

Cited by 38 publications

(8 citation statements)

References 17 publications

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“…During the last decade, different synthetic approaches were employed for the preparation of BFO powders. For example, BFO has been synthesized by solid-state reaction [12], hydrothermal [13], co-precipitation [14], microwave-assisted solution combustion [15] and other methods [16][17][18]. Utilizing different synthetic procedures, BFO was synthesized in the form of bulk ceramics [19], thin films [20] and different nanostructures, such as nanofibers [21], nanocubes and nanorods [22], nanoplates [23], etc.…”

Section: Introductionmentioning

confidence: 99%

A Facile Synthesis and Characterization of Highly Crystalline Submicro-Sized BiFeO3

et al. 2020

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In this study, a highly crystalline bismuth ferrite (BFO) powder was synthesized using a novel, very simple, and cost-effective synthetic approach. It was demonstrated that the optimal annealing temperature for the preparation of highly-pure BFO is 650 °C. At lower or higher temperatures, the formation of neighboring crystal phases was observed. The thermal behavior of BFO precursor gel was investigated by thermogravimetric and differential scanning calorimetry (TG-DSC) measurements. X-ray diffraction (XRD) analysis and Mössbauer spectroscopy were employed for the investigation of structural properties. Scanning electron microscopy (SEM) was used to evaluate morphological features of the synthesized materials. The obtained powders were also characterized by magnetization measurements, which showed antiferromagnetic behavior of BFO powders.

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Section: Introductionmentioning

confidence: 99%

A Facile Synthesis and Characterization of Highly Crystalline Submicro-Sized BiFeO3

et al. 2020

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“…Surface area of the material can be increased, increasing thus its photocatalytic ability under visible radiation (Wang et al 2017b); likewise, particle-type nanocomposites offer the opportunity to integrate the ferroelectric, ferromagnetic and optical properties of BFO with the physical properties of other materials to enhance its potential for applications (Liu and Wu 2019). To this end, various synthesis methods have been developed to obtain BFO compounds as powders with different crystal sizes, different morphologies and nanocomposites (Rojas-Flores et al 2019;Tian et al 2019) such as sol-gel (Maleki 2018), conventional hydrothermal (Wang et al 2018a), coprecipitation (Wang et al 2018b), combustion reaction (Singh et al 2018), sonochemistry (Bismibanu et al 2018), solid state (Sharma et al 2019), Pechini (Casanova Monteiro et al 2018), molten salts (Wu and Zhu 2019), and microwave-assisted hydrothermal (Sun et al 2018). However, implementing synthesis methods such as solid state or sol-gel to obtain BFO often result in the formation of parasitic phases (i.e., Bi 25 FeO 39 and Bi 2 O 3 ) (Rojac et al 2014) while requiring high calcination temperatures.…”

Section: Introductionmentioning

confidence: 99%

Novel photoactive magnetic semiconductor nanocomposites with potential magneto-optical properties

et al. 2021

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A novel magnetic semiconductor nanocomposite based on functionalized magnetite nanoparticles (MNPs) embedded in a matrix of bismuth ferrate compound (BFO) was obtained in a single step for the first time using the microwave-assisted hydrothermal synthesis. The synthesis method allows obtaining multiferroic BFO small particles and MNPs-BFO nanocomposites with optical activity in the near-infrared region (1.6 eV) due to d-d charge transfer transitions on Fe(III) ion orbitals. The functionalized MNPs exhibit strong superparamagnetic behavior with blocking temperature T B near room temperature and high saturation magnetization of M S = 59 emu/g, attributed to ferrimagnetic nano-monodomains with critical size. Meanwhile, the synthesized BFO shows an unusual superparamagnetic behavior with T B = 20 K and an interesting magnetic transition from the blocked superparamagnetic state to quantum superparamagnetic state at a critical temperature T c = 11 K, attributed to ferromagnetic very small, critical size nano-monodomains. As result, the MNPs-BFO nanocomposite shows a superparamagnetic behavior at room temperature which, in close connection with its optical properties, makes it an excellent candidate for infrared magneto-optical applications.

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“…It is difficult to obtain a pure phase of BiFeO 3 because the kinetics of phase formation leads to the formation of secondary phases, such as Bi 25 FeO 40 (sillenite) and Bi 2 Fe 4 O 9 (mullite). Various techniques have been reported to prepare single phase of BiFeO 3 , and those are chemical coprecipitation [39], hydrothermal [40], and sol-gel methods [41][42][43]. The ideas of those techniques are to achieve a single phase of BiFeO 3 with a simple route, low temperature, and cost-effectiveness.…”

Section: Introductionmentioning

confidence: 99%

Ferrite-Based Nanoparticles Synthesized from Natural Iron Sand as the Fe³⁺ Ion Source

Baqiya¹,

Ghufron²,

Retnowati³

et al. 2020

Nanocrystalline Materials

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Ferrite-based nanoparticles, namely, bismuth ferrite (BiFeO 3 ) and calcium ferrite (CaFe 4 O 7 ), have been synthesized via sol-gel and chemically dissolved method, respectively, employing hematite (α-Fe 2 O 3 ) as the Fe 3+ ion source. Firstly, α-Fe 2 O 3 nanoparticles were prepared from natural iron sand containing mostly magnetite (Fe 3 O 4 ) phase through coprecipitation technique continued by sintering process at 800°C for 2 h. Higher BiFeO 3 phase content was achieved after Bi-Fe gel being annealed at 650°C for 1 h in air atmosphere. Furthermore, major phase of CaFe 4 O 7 was formed with molar ratio of Fe 3+ /Ca 2+ = 6 and sintering temperature of 800°C for 3 h. Interestingly, the powders with dominant CaFe 4 O 7 phase, known as calcium biferrite, exhibit higher ferromagnetism at room temperature. The magnetic properties of the calcium biferrite are comparable to those of barium hexaferrite which can be applied for radar-absorbing material. Meanwhile, BiFeO 3 powders also show weak room temperature ferromagnetism. It has also demonstrated that Ni doping in the bismuth ferrite (BiFe 1− xNi x O 3 with x = 0.1) nanoparticles results in enhancement of the magnetic properties. Moreover, a ferroelectric hysteresis loop and a trend of frequency dependence of the dielectric constant have been observed, which were enhanced by Pb doping (Bi 1− yPb y FeO 3 with y = 0.1). These results suggest a multiferroic behavior in the BiFeO 3 nanoparticles.

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Chemical co-precipitation synthesis and properties of pure-phase BiFeO3

Cited by 38 publications

References 17 publications

A Facile Synthesis and Characterization of Highly Crystalline Submicro-Sized BiFeO3

A Facile Synthesis and Characterization of Highly Crystalline Submicro-Sized BiFeO3

Novel photoactive magnetic semiconductor nanocomposites with potential magneto-optical properties

Ferrite-Based Nanoparticles Synthesized from Natural Iron Sand as the Fe³⁺ Ion Source

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Chemical co-precipitation synthesis and properties of pure-phase BiFeO3

Cited by 38 publications

References 17 publications

A Facile Synthesis and Characterization of Highly Crystalline Submicro-Sized BiFeO3

A Facile Synthesis and Characterization of Highly Crystalline Submicro-Sized BiFeO3

Novel photoactive magnetic semiconductor nanocomposites with potential magneto-optical properties

Ferrite-Based Nanoparticles Synthesized from Natural Iron Sand as the Fe3+ Ion Source

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Ferrite-Based Nanoparticles Synthesized from Natural Iron Sand as the Fe³⁺ Ion Source