Observation of enhanced multiferroic, magnetoelectric and photocatalytic properties in Sm-Co codoped BiFeO3 nanoparticles

Arya, G. S.; Yogiraj, J; Negi, N. S.; Shah, Jyoti

doi:10.1016/j.jallcom.2017.06.325

Cited by 30 publications

(3 citation statements)

References 62 publications

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“…The Fe 2p 3/2 core level for each spectrum can be divided into two peaks. The peaks located at approximately 710.0 and 712.8 eV correspond to Fe 2+ and Fe 3+ , respectively [18,19]. The Fe 2+ content is obtained using the ratio of the Fe 2+ peak area to the sum of the Fe 2+ and Fe 3+ peak areas.…”

Section: Xps Analysismentioning

confidence: 99%

Effect of Mn doping on the microstructure and magnetic properties of CuFeO2 ceramics

Hirata

Peng

et al. 2020

J Adv Ceram

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The effects of Mn doping on the microstructure and magnetic properties of CuFeO 2 systems were studied using X-ray diffraction (XRD), X-ray photoelectron spectroscopy, scanning electron microscopy (SEM), and a physical property measurement method. The microstructure measurements demonstrated that the substitution of Mn for Fe can cause lattice distortion, promote grain growth, and change the valence state of Fe and Mn ions. Ceramic samples with doping content x = 0.00-0.03 exhibited two successive magnetic transition temperature (T N) at T N1 ≈ 14 K and T N2 ≈ 10 K. T N decreased gradually with the Mn 4+ content, and T N2 was not observed in the x > 0.05 samples within a temperature range of T = 5-300 K. Magnetic hysteresis loops revealed that only anti-ferromagnetic behavior occurred in the low-doped samples (x = 0.00-0.03), and the coexistence of ferromagnetism and anti-ferromagnetism was observed in the high-doped samples (x = 0.05-0.10). Besides, the x = 0.10 sample had a maximum magnetization of 5.98 emu/g. This study provides basic experimental data for investigating the relationship between the microstructure and magnetic properties of CuFeO 2 systems.

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Section: Xps Analysismentioning

confidence: 99%

Effect of Mn doping on the microstructure and magnetic properties of CuFeO2 ceramics

Hirata

Peng

et al. 2020

J Adv Ceram

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“…Rare earth manganites with hexagonal structure have antiferromagnetic ordering at lower temperatures (T N varies in 57-130 K range) [3] and are ferroelectrics at high temperatures (T C -620-1000 K) [4]. This type of multiferroics could be applied in energyefficient devices [5], relying upon electric-field control of magnetism, biomedicine [6], photocatalysis [7], solid oxide fuel cells [8], gas sensors [9], etc.…”

Section: Introductionmentioning

confidence: 99%

Molten Salt Synthesis of Micro-Sized Hexagonally Shaped REMnO3 (RE = Y, Er, Tm, Yb)

et al. 2023

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Yttrium manganite (YMnO3) is a compound belonging to the hexagonal rare earth manganites family, which demonstrates multiferroic properties. This material can be prepared by several synthetic approaches, with the most common one being the solid-state synthesis. In this work, we show a possibility of preparing this material via molten salt synthesis using the NaCl-KCl mixture as the reaction medium and yttrium and manganese nitrates as the starting materials. We demonstrate that, by varying the reaction temperature and the nitrates-to-chlorides ratio, it is feasible to synthesize hexagonally shaped particles of microscopic dimensions. A similar synthesis procedure can be successfully applied for the preparation of other hexagonal manganites—ErMnO3, TmMnO3, and YbMnO3.

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“…In recent years, there has been many reports on preparation methods for BFO nanoparticles with a focus on photocatalytic applications, which includes sol-gel route [36,37], coprecipitation [38] and hydrothermal reaction [39][40][41]. However, as the morphology of nanoparticles affects the physical properties of bismuth ferrite, we are interested to study the effect of synthesis process on the photocatalytic activity of pure and Nd-doped bismuth ferrite, as well as other physical properties of BFO and BNFO nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic activity, optical and ferroelectric properties of Bi 0.8 Nd 0.2 FeO 3 nanoparticles synthesized by sol-gel and hydrothermal methods

Maleki

2018

Journal of Magnetism and Magnetic Materials

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In this study, the effects of synthesis method and dopant Neodymium ion on the ferroelectric properties and photocatalytic activity of bismuth ferrite were studied. BiFeO3 (BFO) and Bi0.8Nd0.2FeO3 (BNFO) nanoparticles were prepared through a facile sol-gel combustion (SG) and hydrothermal (HT) methods. The as-prepared products were characterized by X-ray powder diffraction (XRD), Furrier transform infrared spectroscopy (FTIR) and transmission electron microscope (TEM) images. Both nanophotocatalysts have similar crystal structures, but the SG products have semi-spherical morphology. On the other hand, HT samples have rod-like morphology. TEM results indicated that the morphology of products was not affected by the doping process. The thermal, optical and magnetic properties of nanoparticles were investigated by thermogravitometry and differential thermal analysis (TG/DTA), UV-vis spectroscopy, and vibrating sample magnetometer (VSM). The ferroelectric properties of BNFO nanoparticles were improved compared to the undoped bismuth ferrite. The photocatalytic activity of as-synthesized nanoparticles was also evaluated by the degradation of methyl orange (MO) under visible light irradiation. The photocatalytic activity of nanoparticles prepared via sol-gel method exhibited a higher photocatalytic activity compared to powders obtained by hydrothermal method. Also substitution of Nd into the BFO structure increased the photocatalytic activity of products.

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Observation of enhanced multiferroic, magnetoelectric and photocatalytic properties in Sm-Co codoped BiFeO3 nanoparticles

Cited by 30 publications

References 62 publications

Effect of Mn doping on the microstructure and magnetic properties of CuFeO2 ceramics

Effect of Mn doping on the microstructure and magnetic properties of CuFeO2 ceramics

Molten Salt Synthesis of Micro-Sized Hexagonally Shaped REMnO3 (RE = Y, Er, Tm, Yb)

Photocatalytic activity, optical and ferroelectric properties of Bi 0.8 Nd 0.2 FeO 3 nanoparticles synthesized by sol-gel and hydrothermal methods

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