Effect of Eu substitution on the crystal structure and multiferroic properties of BiFeO3

Zhang, Xingquan; Sui, Yu; Wang, Xianjie; Wang, Yang; Wang, Zhu

doi:10.1016/j.jallcom.2010.07.144

Cited by 198 publications

(81 citation statements)

References 41 publications

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“…1(b)) suggests a shift in the peak position toward higher 2Â value with the increasing Eu content, which is due to the smaller radius of Eu 3+ (0.95Å) as compared to Bi 3+ (1.03Å), similar to that reported in Ref. [16]. Fig.…”

Section: Resultssupporting

confidence: 83%

“…Multiferroic properties of BEFO x bulk and films have been reported previously [14][15][16], which displays reduced leakage current and improved ferroelectric properties. However, most of these works are focusing on ceramics [14], thin films prepared by sol-gel method [15], or ferroelectric and dielectric properties of the BEFO x [16]. Until now, the effects of Eu doping on the structures, optical and magnetic properties of BFO films, remain unknown.…”

Section: Introductionmentioning

confidence: 71%

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Structure, optical and magnetic properties of Bi 1−x Eu x FeO 3 films fabricated by pulsed laser deposition

Liu

Deng

Zhu

et al. 2014

Applied Surface Science

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Section: Resultssupporting

confidence: 83%

Section: Introductionmentioning

confidence: 71%

Structure, optical and magnetic properties of Bi 1−x Eu x FeO 3 films fabricated by pulsed laser deposition

Liu

Deng

Zhu

et al. 2014

Applied Surface Science

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“…for Fe 3? in the BiFeO 3 -based ceramics, which suppresses the formation of oxygen vacancies [17,33]. Similar enhancement in the electric insulation has been observed in Ti-or/and Mn-doped BiFeO 3 ceramics [32,33].…”

Section: Resultssupporting

confidence: 69%

“…On the other hand, Eu 3? ion is an effective additive with ferromagnetism to enhance the ferromagnetism of the BFO [16,17]. To our knowledge, there are few reports on improved ferroelectricity and ferromagnetism in Eu-modified BiFeO 3 -BaTiO 3 materials.…”

Section: Introductionmentioning

confidence: 99%

Improved ferroelectricity and ferromagnetism of Eu-modified BiFeO3–BaTiO3 lead-free multiferroic ceramics

Tian

Zhou

Zou

et al. 2015

J Mater Sci: Mater Electron

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Multiferroic ceramics of 0.75Bi 1-x Eu x FeO 3 -0.25BaTiO 3 ? 1 mol% MnO 2 were synthesized by a conventional solid state reaction method and the effects of Eu doping on microstructure, ferroelectric, ferromagnetic and piezoelectric properties of the ceramics were investigated. All the ceramics exhibit a pure perovskite structure without any secondary phases. After the addition of Eu 3? ions, the crystal structure of the ceramics is transformed from rhombohedral to tetragonal phase at x = 0.025. The ferroelectricity and ferromagnetism of the ceramics are improved. For the ceramic with x = 0.025, the optimum remanent polarization of 18.3 lC/cm 2 and good piezoelectricity of 82 pC/N are obtained. The saturated magnetization M s and remanent magnetism M r of the ceramics are improved by 165 and 141 % with x increasing from 0 to 0.175, respectively.

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“…The ceramics exhibit hysteresis loops typical of ferromagnetic behavior at room temperature (300 K) and at low temperature (5 K), which indicates the presence of an ordered magnetic structure that can exist in spinelperovskite mixed system. The CoFe 2 O 4 content mainly contributes to the ferromagnetic behavior of the composites, as BiFeO 3 exhibits antiferromagnetic nature, preferably G-type magnetic structure and it does not have any macroscopic magnetization at room temperature [33]. The antiferromagnetism of BFO is turned into ferromagnetism with addition of 30 mol% CFO which may be due to the suppression of spiral spin modulation.…”

Section: Dielectric Measurementsmentioning

confidence: 99%

BiFeO3–CoFe2O4–PbTiO3 composites: structural, multiferroic, and optical characteristics

2014

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Three-phase magnetoelectric composites (1 -x) (0.7BiFeO 3 -0.3CoFe 2 O 4 )-xPbTiO 3 (or equivalently written as (1 -x)(0.7BFO-0.3CFO)-xPT) with x variations 0, 0.30, 0.35, 0.40, 0.45, and 1.0 were synthesized using hybrid processing route. The effects of PT addition on structural, multiferroic, and optical properties have been subsequently investigated. A detailed Rietveld refinement analysis of X-ray diffraction patterns has been performed, which confirms the presence of structural phases of individual constituents in the composites. Field emission scanning electron microscopy images are taken for microstructural analysis and grain size determination. Transmission electron microscopy analysis of 0.3CFO-0.7BFO reveals the average particle size to be lying in the window of 10-15 nm. The temperature-dependent dielectric constant at various frequencies (1, 10, 50, 100, and 500 kHz) has been studied, and the dielectric study reveals the increase of dielectric constant and decrease of average dielectric loss of composites with incorporation of PT content. Room temperature ferromagnetic behavior of composites is confirmed through the observation of magnetization versus magnetic field (M-H) hysteresis loops. The variation of magnetization with temperature indicates the presence of spin glass behavior in composites. Magnetoelectric coupling is evidenced in the composites through the observation of dependence of the dielectric constant on magnetic field, and magnetodielectric response of 2.05 % is observed for 45 mol% addition of PT content. The fractional change of magnetic field-induced dielectric constant can also be expressed as De r * cM 2 , and the value of c is found to be *1.08 9 10 -2 (emu/g) -2 for composite with x = 0.40. Fourier transformed infrared spectroscopy of samples is carried out to analyze various bonds formation in the composites.

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Effect of Eu substitution on the crystal structure and multiferroic properties of BiFeO3

Cited by 198 publications

References 41 publications

Structure, optical and magnetic properties of Bi 1−x Eu x FeO 3 films fabricated by pulsed laser deposition

Structure, optical and magnetic properties of Bi 1−x Eu x FeO 3 films fabricated by pulsed laser deposition

Improved ferroelectricity and ferromagnetism of Eu-modified BiFeO3–BaTiO3 lead-free multiferroic ceramics

BiFeO3–CoFe2O4–PbTiO3 composites: structural, multiferroic, and optical characteristics

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