The effect of ion doping at different sites on the structure, defects and multiferroic properties of BiFeO3 ceramics

Hirata, Dai; Ye, Fengjiao; Chen, Zhenping; Li, Tao; Liu, Dewei

doi:10.1016/j.jallcom.2017.11.012

Cited by 54 publications

(14 citation statements)

References 31 publications

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“…The leakage current represents the main problem for such material, this is due to its low resistivity which is reflected as its instability [9]. The coexistence of both vacancies and Fe 2+ ions represents the main source of leakage current [10][11][12][13][14]. Several attempts were carried out to overcome such problems using doping techniques.…”

Section: Introductionmentioning

confidence: 99%

Structural, optical and electrical properties of multiferroic BiFe1-xNixO3 ceramic

2019

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BiFe 1−x Ni x O 3 (x = 0.7, 0.8 and 0.9) polycrystalline ceramics are synthesized by a solid-state reaction, and their structural, absorption, leakage current and electrical properties are investigated. The X-ray diffraction measurements show that the lattice parameter values increase with increasing the substitution of Ni 2+ ions for Fe 3+ ions. The optical absorption spectra indicate that the band gap energy increases with increasing Ni 2+ ions. Leakage currents are much decreased by about three orders of magnitude with increasing Ni ions. The J-E hysteresis was also investigated. Both real and imaginary dielectric constants are investigated as a function of both frequency and temperature. The room temperature dielectric measurement with a wide frequency range of 1 KHz-1 MHz reveals that the real and imaginary dielectric constants are decreased with increasing frequency of BiFe 1−x Ni x O 3 (x = 0.7, 0.8, 0.9) ceramics. The real and imaginary dielectric constants are found to be increased with temperature. The temperature dependence of ε′ and ε″ exhibits an anomaly which shifted to lower temperature with increasing Ni 2+. The anomaly indicates the possible existence of spin-glass states with Ni 2+ ion substitution in places of Fe 3+ ions.

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Section: Introductionmentioning

confidence: 99%

Structural, optical and electrical properties of multiferroic BiFe1-xNixO3 ceramic

2019

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“…A similar result can be found in another work. 600 Ti 4+ doping can enhance the electrical resistivity and remnant magnetization of Bi 0.9 Ho 0.1 FeO 3 . 595 Coexistence of Ti Fe and V Fe is attributed to the improved performance.…”

Section: Bismuth Ferritementioning

confidence: 96%

“…Bismuth ferrite (BiFeO 3 ) has been studied intensively over the last decades. It possessing high T C (above 1000 K) and Néel Temperature ( ∼ 643 K) is both ferroelectric and antiferromagnetic at RT. ,,− It is one of the few compounds that exhibit the multiferroic at RT. It is also the typical sample that researchers choose to investigate the physics behind multiferroic couplings and corresponding devices.…”

Section: Ferroelectricsmentioning

confidence: 99%

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Defects and Aliovalent Doping Engineering in Electroceramics

et al. 2020

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Since the positive influences of defects on the performance of electroceramics were discovered, investigations concerning on defects and aliovalent doping routes have grown rapidly in the fields of inorganic chemistry and condensed matter physics. In this article, we summarized the types of defects in electroceramics as well as characterization tools of defects and highlighted the effects of intrinsic and extrinsic defects on the material performances with the emphasis on dielectric, ferroelectric, and piezoelectric properties. We mainly introduced defect related theoretical simulation and experimental results in several typical incipient ferroelectrics, ferroelectrics, and antiferroelectrics. Hence, the influences of defects on the crystal lattice were summed up, and then the main physical mechanisms were highlighted. Particularly, the performance enhancements of aliovalently doped electroceramics were also evaluated and reviewed. Finally, the outlook and challenges were discussed on the basis of their current developments. This article covers not only an overview of the state-of-the-art advances of defects and aliovalent doping routes in electroceramics but also the future prospects that may open another window to tune the electrical performance of electroceramics via intentionally introducing certain defects.

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“…Bismuth ferrate, BiFeO 3 (BFO), is considered the only material with a perovskite-like structure (ABO 3 ) whose single phase (R3c) has multiferroic properties at room temperature (Lam et al 2017;Mao et al 2019;Dai et al 2018). Simultaneously, it is an antiferromagnetic (T N = 643.15 K) and ferroelectric compound (T C = 1103.15 K).…”

Section: Introductionmentioning

confidence: 99%

Novel photoactive magnetic semiconductor nanocomposites with potential magneto-optical properties

et al. 2021

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A novel magnetic semiconductor nanocomposite based on functionalized magnetite nanoparticles (MNPs) embedded in a matrix of bismuth ferrate compound (BFO) was obtained in a single step for the first time using the microwave-assisted hydrothermal synthesis. The synthesis method allows obtaining multiferroic BFO small particles and MNPs-BFO nanocomposites with optical activity in the near-infrared region (1.6 eV) due to d-d charge transfer transitions on Fe(III) ion orbitals. The functionalized MNPs exhibit strong superparamagnetic behavior with blocking temperature T B near room temperature and high saturation magnetization of M S = 59 emu/g, attributed to ferrimagnetic nano-monodomains with critical size. Meanwhile, the synthesized BFO shows an unusual superparamagnetic behavior with T B = 20 K and an interesting magnetic transition from the blocked superparamagnetic state to quantum superparamagnetic state at a critical temperature T c = 11 K, attributed to ferromagnetic very small, critical size nano-monodomains. As result, the MNPs-BFO nanocomposite shows a superparamagnetic behavior at room temperature which, in close connection with its optical properties, makes it an excellent candidate for infrared magneto-optical applications.

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The effect of ion doping at different sites on the structure, defects and multiferroic properties of BiFeO3 ceramics

Cited by 54 publications

References 31 publications

Structural, optical and electrical properties of multiferroic BiFe1-xNixO3 ceramic

Structural, optical and electrical properties of multiferroic BiFe1-xNixO3 ceramic

Defects and Aliovalent Doping Engineering in Electroceramics

Novel photoactive magnetic semiconductor nanocomposites with potential magneto-optical properties

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