Dielectric behavior of hexagonal and orthorhombic YFeO3 prepared by modified sol-gel method

Zhang, Runlan; Chen, Changle; Kusaka, Jin; Niu, Lingfeng; Xing, Hui; Luo, Bingcheng

doi:10.1007/s10832-013-9869-x

Cited by 38 publications

(13 citation statements)

References 17 publications

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“…We notice that the dielectric constant of the system has increased on Ti doping. The increase in the dielectric constant, with increase in temperature, of YFO ceramics appears sluggish, whereas for YFTO there is an initial decrease in dielectric constant for the temperature range 30°C–50°C (which could be due to the occurrence of slow temperature phase transition) and subsequently it is independent of temperature up to 280°C. However, above 280°C, the dielectric constant and loss increased significantly with increase in temperature.…”

Section: Resultsmentioning

confidence: 95%

“…Yttrium ferrite (YFeO 3 , YFO) is one among the magnetoelectric materials which exhibits magnetocapacitance effect . YFO has high resistivity and antiferromagnetic behavior with a high Neel temperature ( T N =640 K) . It does not show the ferroelectric characteristics due to its centrosymmetric space group Pnma at room temperature (RT) .…”

Section: Introductionmentioning

confidence: 99%

“…6 YFO has high resistivity and antiferromagnetic behavior with a high Neel temperature (T N =640 K). 7,8 It does not show the ferroelectric characteristics due to its centrosymmetric space group Pnma at room temperature (RT). 9 In YFO, dielectric anomaly observed without spontaneous polarization is attributed to magnetodielectric effect.…”

Section: Introductionmentioning

confidence: 99%

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Enhanced magnetic and dielectric properties of Ti‐doped YFeO₃ ceramics

et al. 2017

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Polycrystalline YFeO3 (YFO) and YFe1−(4/3)xTixO3(YFTO) ceramics were prepared using the powder synthesized from the sol‐gel route. X‐ray diffraction analyses of the polycrystalline ceramics revealed the crystallization of the phase in orthorhombic crystal structure associated with the space group Pnma. The magnetization versus magnetic field hysteresis loops were obtained at room temperature for YFO and YFTO ceramics. The magnetic property changes from weak ferromagnetic in YFO to ferromagnetic in YFTO ceramics. The dielectric constant recorded at room temperature for YFTO ceramics was six times higher than that of YFO, whereas the dielectric loss gets reduced to 0.06 from 0.3 for YFO at 1 kHz. Impedance spectroscopy study carried out on YFO and YFTO ceramics confirmed the existence of non‐Debye‐type relaxation. Observed single semicircle in Z′ vs −Z′′ plot established the incidence of intrinsic (bulk) effect and ruled out any grain boundary or electrode effects. The mechanism for the dielectric relaxation and electrical conduction process observed in YFO and YFTO ceramics was discussed by invoking electric modulus formalisms. Activation energy obtained by ac conductivity study suggested that the conduction process in YFO was linked up with the existence of the polaron and oxygen vacancies, whereas only oxygen vacancies contribute to the conduction process in YFTO ceramics.

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Section: Resultsmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

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Enhanced magnetic and dielectric properties of Ti‐doped YFeO₃ ceramics

et al. 2017

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“…As the calcination temperature increases, the hexagonal phase is prone to transform to the orthorhombic phase. Previous studies show that the hexagonal phase can be obtained only in the range of 700–720 °C with the sol-gel method, while orthorhombic YFeO 3 and other minors (Y 2 O 3 or Fe 2 O 3 ) co-exist [7,8,9]. The calcination temperature gap is so narrow that no pure hexagonal phase can be obtained.…”

Section: Introductionmentioning

confidence: 99%

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

Wang

Song

et al. 2017

Materials

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Phase-pure hexagonal and orthorhombic YFeO3 nanopowders are synthesized by low-temperature solid-state reaction along with Zr doping. The obtained powders are characterized by X-ray diffraction, field emission scanning electron microscopy, and physical property measurements. The hexagonal YFeO3 exhibits a narrower optical band gap in comparison to the orthorhombic one, while the orthorhombic YFeO3 presents better magnetic properties. The formation of hexagonal or orthorhombic phase can be effectively controlled by Zr doping. The temperature range of synthesizing the hexagonal YFeO3 nanopowders is increased by ~200 °C due to Zr doping so that they can be easily synthesized, which possesses a finer particle size and a smaller optical band gap, making it favorable for optical applications.

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“…Yttrium orthoferrite (YFeO 3 ) is a perovskite-like compound possessing a broad range of properties making it attractive for advanced technical applications [1][2][3][4]. Nowadays many studies focus on the features of synthesis and properties of nanocrystalline YFeO 3 [5][6][7][8][9][10] with the view of developing new nanomaterials.…”

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confidence: 99%

Formation mechanism of nanocrystalline yttrium orthoferrite under heat treatment of the coprecipitated hydroxides

et al. 2015

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Dielectric behavior of hexagonal and orthorhombic YFeO3 prepared by modified sol-gel method

Cited by 38 publications

References 17 publications

Enhanced magnetic and dielectric properties of Ti‐doped YFeO₃ ceramics

Enhanced magnetic and dielectric properties of Ti‐doped YFeO₃ ceramics

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

Formation mechanism of nanocrystalline yttrium orthoferrite under heat treatment of the coprecipitated hydroxides

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Dielectric behavior of hexagonal and orthorhombic YFeO3 prepared by modified sol-gel method

Cited by 38 publications

References 17 publications

Enhanced magnetic and dielectric properties of Ti‐doped YFeO3 ceramics

Enhanced magnetic and dielectric properties of Ti‐doped YFeO3 ceramics

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

Formation mechanism of nanocrystalline yttrium orthoferrite under heat treatment of the coprecipitated hydroxides

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Enhanced magnetic and dielectric properties of Ti‐doped YFeO₃ ceramics

Enhanced magnetic and dielectric properties of Ti‐doped YFeO₃ ceramics