Structure-Controllable Synthesis of Multiferroic YFeO3 Nanopowders and Their Optical and Magnetic Properties

Wang, Meng; Wang, Ting; Song, Shenhua; Tan, Mingyi

doi:10.3390/ma10060626

Cited by 25 publications

(5 citation statements)

References 21 publications

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“…The XRD pattern of the sample calcined at 750 o C consists of major orthorhombic phase and minor hexagonal phase. The proportion of secondary hexagonal phase of YFeO 3 decreases with increasing calcination temperature as reported earlier [8]. As shown in Fig.…”

Section: Resultssupporting

confidence: 81%

Structural, dielectric, semiconducting and optical properties of high-energy ball milled YFeO3 nano-particles

Singh

Kumar

Verma

et al. 2019

Dae Solid State Physics Symposium 2018

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In this work, we report the effects of calcination temperature on structural, dielectric, semiconducting and optical properties of YFeO 3 nanoparticles prepared by a high energy ball milling process. The structural analysis of the X-ray diffraction data shows that YFeO 3 exists in orthorhombic as well as in hexagonal mixed phase states. The Rietveld analysis confirms that orthorhombic YFeO 3 crystallizes into Pnma space group. The optical band gap of YFeO 3 reduces from 1.96 eV to 1.68 eV with increasing the calcination temperature of the YFeO 3 sample. The band gap reducing effect might be attributed to the increased crystallite size and decreased lattice strain which is confirmed by the Williamson-Hall plot method. The obtained low band gap YFeO 3 ceramic may provide a new possibility to develop eco-friendly Ferroelectric photovoltaic devices.

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Section: Resultssupporting

confidence: 81%

Structural, dielectric, semiconducting and optical properties of high-energy ball milled YFeO3 nano-particles

Singh

Kumar

Verma

et al. 2019

Dae Solid State Physics Symposium 2018

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“…YFeO 3 (abbreviated as YFO), YFe 0.95 Co 0.05 O 3 (Co5), Y 0.95 Gd 0.05 FeO 3 (Gd5), Y 0.95 Gd 0.05 Fe 0.95 Co 0.05 O 3 (Gd5Co5), Y 0.9 Gd 0.1 Fe 0.95 Co 0.05 O 3 (Gd10Co5), Y 0.85 Gd 0.15 Fe 0.95 Co 0.05 O 3 (Gd15Co5), and Y 0.8 Gd 0.2 Fe 0.95 Co 0.05 O 3 (Gd20Co5) nanoparticles were synthesized using a low-temperature solid-state reaction technique as described in Ref. [19]. The raw reagents include Fe(NO 3 ) 3 ∙9H 2 O, Y(NO 3 ) 3 ∙6H 2 O, Co(NO 3 ) 2 ·6H 2 O, Gd(NO 3 ) 3 ·6H 2 O, and citric acid.…”

Section: Methodsmentioning

confidence: 99%

Structural, Magnetic and Optical Properties of Gd and Co Co-Doped YFeO3 Nanopowders

Wang

2019

Materials

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YFeO3, YFe0.95Co0.05O3, Y0.95Gd0.05FeO3 and Y1−xGdxFe0.95Co0.05O3 (x = 0.0, 0.05, 0.10, 0.15 and 0.20) nanopowders were successfully fabricated via a low-temperature solid-state reaction technique. Results obtained using X-ray diffraction (XRD), scanning electron microscopy (SEM), and Raman spectra indicate that YFeO3 nanopowders with Gd3+ and Co3+ ions co-doping at Y and Fe-sites were fabricated at 800 °C in sizes below 50 nm, and a distorted structure was obtained. Magnetic hysteresis loop analyses illustrate that ferromagnetic behavior of YFeO3 nanopowders can be enhanced with the addition of Gd and Co. Whereas the maximum and remnant magnetization of the powders were found to be about 5.24 and 2.6 emu/g, respectively, the optical band gap was around 2.4 eV, proving that co-doped YFeO3 nanopowders have a strong capability to absorb visible light. Because both magnetic and optical properties of these materials are greatly improved with the addition of Gd and Co, one can expect the scope of their potential application in the magnetic and optical fields to increase.

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“…The centrosymmetric nature of this material is responsible for ferroelectric and weak ferromagnetic behaviors at room temperature. It presents a magnetic transition at the Neel temperature of ~640 K [11,12]. Magnetic ordering is related to three types of magnetic interactions in atoms bonds: Y-Y, Y-Fe and Fe-Fe where Fe-O-Fe super-exchange interaction is the main source of the weak ferromagnetic behavior as well as the canting of magnetic moments of Fe 3+ due to the Dzyaloshinskii-Moriya (DM) interaction [10,13].…”

Section: Introductionmentioning

confidence: 99%

Enhanced Multiferroic Properties of YFeO3 by Doping with Bi3+

et al. 2019

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Tthe present work studied the cationic substitution of Y3+ by Bi3+ on the crystal structure of orthorhombic YFeO3 and its effect over magnetic, dielectric and electric properties of multiferroic yttrium orthoferrite. Stoichiometric mixtures of Y2O3, Fe2O3 and Bi2O3 were mixed and milled for 5 h using a ball to powder weight ratio of 10:1 by high-energy ball milling. The obtained powders were pressed at 1500 MPa and sintered at 700 °C for 2 h. The test samples were characterized at room temperature by X-ray diffraction (XRD), vibrating sample magnetometer (VSM), scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDS) and impedance spectroscopy (IS). The X-ray diffraction patterns disclosed a maximum solubility of 30 % mol. of Bi3+ into the orthorhombic YFeO3. For higher concentrations, a transformation from orthorhombic to garnet structure was produced, obtaining partially Y3Fe5O12 phase. The substitution of Bi3+ in Y3+ sites promoted a distortion into the orthorhombic structure and modified Fe-O-Fe angles and octahedral tilt. In addition, it promoted a ferromagnetic (FM) order, which was attributed to both the crystal distortion and Dzyaloshinskii-Moriya interaction. For doped samples, an increase in real permittivity values was observed, and reduced with the increase of frequency. This in good agreement with the Maxwell-Wagner effect.

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Structure-Controllable Synthesis of Multiferroic YFeO3 Nanopowders and Their Optical and Magnetic Properties

Cited by 25 publications

References 21 publications

Structural, dielectric, semiconducting and optical properties of high-energy ball milled YFeO3 nano-particles

Structural, dielectric, semiconducting and optical properties of high-energy ball milled YFeO3 nano-particles

Structural, Magnetic and Optical Properties of Gd and Co Co-Doped YFeO3 Nanopowders

Enhanced Multiferroic Properties of YFeO3 by Doping with Bi3+

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