A soft chemical route to the synthesis of BiFeO 3 nanoparticles with enhanced magnetization

Hasan, M. M.; Islam, Md. Fakhrul; Mahbub, Rubayyat; Hossain, Md. Sarowar; Hakim, M. A.

doi:10.1016/j.materresbull.2015.09.007

Cited by 84 publications

(30 citation statements)

References 38 publications

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“…Citric acid and ethylene glycol were used as chelating and polymerization agents respectively. The detailed synthesis methodology to obtain BFO precursor xerogel has been described in our previous investigation [14]. The precursor xerogel powder and pelletized samples were annealed at 600°C for further characterization.…”

Section: Methodsmentioning

confidence: 99%

Saturation magnetization and band gap tuning in BiFeO3 nanoparticles via co-substitution of Gd and Mn

Hasan

Basith

Zubair

et al. 2016

Journal of Alloys and Compounds

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In this investigation, Gd and Mn co-doped Bi 0.85 Gd 0.15 Fe 1-x Mn x O 3 (x=0.0-0.15) nanoparticles have been prepared to report the influence of co-substitution on their structural, optical, magnetic and electrical properties. Due to simultaneous substitution of Gd and Mn in BiFeO 3 , the crystal structure has been modified from rhombohedral (R3c) to orthorhombic (Pn2 1 a) and the Fe-O-Fe bond angle and Fe-O bond length have been changed. For Mn doping up to 10% in Bi 0.85 Gd 0.15 Fe 1-x Mn x O 3 nanoparticles, the saturation magnetization (M s ) has been enhanced significantly, however, for a further increase of doping up to 15 %, the M s has started to reduce again. The co-substitution of Gd and Mn in BiFeO 3 nanoparticles also demonstrates a strong reduction in the optical band gap energy and electrical resistivity compared to that of undoped BiFeO 3 .

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Section: Methodsmentioning

confidence: 99%

Saturation magnetization and band gap tuning in BiFeO3 nanoparticles via co-substitution of Gd and Mn

Hasan

Basith

Zubair

et al. 2016

Journal of Alloys and Compounds

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“…Rod, 685 Island, 684 Wire, 30,668 Belt, Tube, 53,702,723 Cube, 665,666 Particle, 46,466,505,672,[679][680][681][682][683]686,687,693,694,[698][699][700][701][703][704][705][706][707][708][709][710][711][713][714][715][716][717][718][719][720] Dot array, 669 Sheet, 763 Plate, 670 Fiber, 695,697,712 Nanocomposite, 516,…”

Section: Synthesis Of Bfo-based Nanostructuresmentioning

confidence: 99%

Multiferroic bismuth ferrite-based materials for multifunctional applications: Ceramic bulks, thin films and nanostructures

Fan

Xiao

et al. 2016

Progress in Materials Science

516

176

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Among the different types of multiferroic compounds, bismuth ferrite (BiFeO 3 ; BFO) stands out because it is perhaps the only one being simultaneously magnetic and strongly ferroelectric at room temperature. Therefore, in the past decade or more, extensive research has been devoted to BFO-based materials in a variety of different forms, including ceramic bulks, thin films and nanostructures. Ceramic bulk BFO and their solid solutions with other oxide perovskite compounds show excellent ferroelectric and piezoelectric properties and are thus promising candidates for lead-free ferroelectric and piezoelectric devices. BFO thin films, on the other hand, exhibit versatile structures and many intriguing properties, particularly the robust ferroelectricity, the inherent magnetoelectric coupling, and the emerging photovoltaic effects. BFO-based nanostructures are of great interest owing to their size effect-induced structural modification and enhancement in various functional behaviors, such as magnetic and photocatalytic properties. Although to date several

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“…The detailed synthesis procedure for the preparation of BFO precursor xerogel is described in details in our previous investigation. 13 The ground precursor xerogel powders were annealed at 400 o C-600 o C for two hours to obtain BFO and BBFO nanoparticles. X-ray diffraction (XRD) analysis, X-ray photoelectron spectroscopy (XPS) analysis, field emission scanning electron microscope (FESEM) imaging and magnetic measurements were performed with annealed powders.…”

Section: Methodsmentioning

confidence: 99%

“…8,14,15 Besides, recent investigations have demonstrated enhanced magnetization in BFO nanostructures with sizes less than 62 nm by virtue of its modified spiral spin structure. [11][12][13] The effect of doping concentration on multiferroic properties of both bulk and nanocrystalline Ba-doped BFO ceramic materials were reported in Refs. [16][17][18].…”

Section: -2mentioning

confidence: 99%

Size dependent magnetic and electrical properties of Ba-doped nanocrystalline BiFeO3

et al. 2016

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Improvement in magnetic and electrical properties of multiferroic BiFeO3 in conjunction with their dependence on particle size is crucial due to its potential applications in multifunctional miniaturized devices. In this investigation, we report a study on particle size dependent structural, magnetic and electrical properties of sol-gel derived Bi0.9Ba0.1FeO3 nanoparticles of different sizes ranging from ∼ 12 to 49 nm. The substitution of Bi by Ba significantly suppresses oxygen vacancies, reduces leakage current density and Fe 2+ state. An improvement in both magnetic and electrical properties is observed for 10 % Ba-doped BiFeO3 nanoparticles compared to its undoped counterpart. The saturation magnetization of Bi0.9Ba0.1FeO3 nanoparticles increase with reducing particle size in contrast with a decreasing trend of ferroelectric polarization. Moreover, a first order metamagnetic transition is noticed for ∼ 49 nm Bi0.9Ba0.1FeO3 nanoparticles which disappeared with decreasing particle size. The observed strong size dependent multiferroic properties are attributed to the complex interaction between vacancy induced crystallographic defects, multiple valence states of Fe, uncompensated surface spins, crystallographic distortion and suppression of spiral spin cycloid of BiFeO3.

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A soft chemical route to the synthesis of BiFeO 3 nanoparticles with enhanced magnetization

Cited by 84 publications

References 38 publications

Saturation magnetization and band gap tuning in BiFeO3 nanoparticles via co-substitution of Gd and Mn

Saturation magnetization and band gap tuning in BiFeO3 nanoparticles via co-substitution of Gd and Mn

Multiferroic bismuth ferrite-based materials for multifunctional applications: Ceramic bulks, thin films and nanostructures

Size dependent magnetic and electrical properties of Ba-doped nanocrystalline BiFeO3

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