Magnetic and dielectric properties of Aurivillius phase Bi6Fe2Ti3−2xNbxCoxO18 (0 ≤ x ≤ 0.4)

Yuan, Bing; Yang, Jiyong; Chen, J.; Zuo, Xuzhong; Yin, Lihua; Tang, Xiaodong; Zhu, Xi; Dai, Jianming; Song, Wenhai; Sun, Yan

doi:10.1063/1.4865422

Cited by 56 publications

(25 citation statements)

References 30 publications

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“…Therefore, attempting to synthesize room temperature multiferroic materials is a challenging task of materials science. Doping magnetic species into ferroelectric matrices is one of the most effective ways to obtain room temperature multiferroics, and thus has received much attention in the past few years [4][5][6][7][8][9][10][11][12][13]. Ferromagnetism was successfully introduced in the ferroelectric BaTiO 3 material by Fe doping, however, its ferroelectricity was suppressed simultaneously due to the decreased tetragonal distortion and the enhanced leakage current [4].…”

Section: Introductionmentioning

confidence: 99%

Multiferroic and dielectric properties of Bi4LaTi3FeO15 ceramics

Huang

Zhu

et al. 2015

Ceramics International

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Section: Introductionmentioning

confidence: 99%

Multiferroic and dielectric properties of Bi4LaTi3FeO15 ceramics

Huang

Zhu

et al. 2015

Ceramics International

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“…15,16 By doping Co at Fe sites, Mao et al found that Bi 5 Fe 0.5 Co 0.5 Ti 3 O 15 presents a remarkable coexistence of the ferroelectricity and ferromagnetism above RT. 7 17,18 Therefore, inserting a magnetic unit into the Aurivillius phase may be an effective way to regulate the magnetic and magnetoelectric properties by modulating the interlayer distance, the number of perovskite-like layers, and the coupling between magnetic cations such as Fe 3þ , Co 3þ , and Mn 3þ . It is known that ferromagnetic material BiMnO 3 exhibits the magnetocapacitance effect arising from the inherent magnetoelectric coupling between the ferroelectric and ferromagnetic orders.…”

Section: Introductionmentioning

confidence: 99%

Structural, magnetic, and dielectric studies of the Aurivillius compounds SrBi5Ti4MnO18 and SrBi5Ti4Mn0.5Co0.5O18

Yuan

Yang

Song

et al. 2015

Journal of Applied Physics

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We have successfully synthesized the Aurivillius compounds SrBi5Ti4MnO18 and SrBi5Ti4Mn0.5Co0.5O18 using a modified Pechini method. Both samples have an orthorhombic structure with the space group B2cb. The valence state of Mn is suggested to be +3 and the doped Co ions exist in the form of Co2+ and Co3+ based on the results of x-ray photoelectron spectroscopy. The sample SrBi5Ti4MnO18 exhibits a dominant paramagnetic state with the existence of superparamagnetic state as evidenced by the electron paramagnetic resonance results, whereas SrBi5Ti4Mn0.5Co0.5O18 undergoes a ferrimagnetic transition at 161 K originating from the antiferromagnetic coupling of Co-based and Mn-based sublattices, and a ferromagnetic transition at 45 K arising from the Mn3+-O-Co3+ (low spin) interaction. The sample SrBi5Ti4Mn0.5Co0.5O18 exhibits two dielectric anomalies. One corresponds to a relaxor-like dielectric relaxation which follows the Vogel-Fulcher function and the other dielectric relaxation obeys the Arrhenius law arising from the collective motion of oxygen vacancies. In addition, the sample SrBi5Ti4Mn0.5Co0.5O18 exhibits a magnetodielectric effect caused by the Maxwell-Wagner effect because of the conductivity of the sample. This is demonstrated by the fact that the activation energy in dielectric loss process is close to that for dc conductivity and the magnetodielectric effect is sensitive to the measured frequency.

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“…Moreover, mutliferroic (MF) properties of the coexistence of magnetic, ferroelectric and/or ferroelastic orderings in one phase can be realized by inserting the typical MF BiFeO 3 phase into the isostructural Bi 4 Ti 3 O 12 BLFs, whose formula is expressed as Bi 4 Bi n-3 Ti 3 Fe n-3 O 3n+3 (n is an integer greater than or equal to 4, denoting the number of perovskite layer). More importantly, an associated magnetoelectric (ME) coupling between spin and dipolar orderings drives them to be qualified in the high-speed and low-power consumption multi-state memory, spintronics devices and even in photovoltaic cells56789101112131415. Nevertheless, the nature of antiferromagnetic ordering and weak ME coupling of Aurivillius MF phases restricts their prospects of the practical application67891011121314.…”

mentioning

confidence: 99%

“…More importantly, an associated magnetoelectric (ME) coupling between spin and dipolar orderings drives them to be qualified in the high-speed and low-power consumption multi-state memory, spintronics devices and even in photovoltaic cells56789101112131415. Nevertheless, the nature of antiferromagnetic ordering and weak ME coupling of Aurivillius MF phases restricts their prospects of the practical application67891011121314. Consequently, various routes including A/B site doping, interface and stress engineering were adopted to regulate the magnetic orderings and ME coupling567891011121314.…”

mentioning

confidence: 99%

Dielectric behaviors of Aurivillius Bi5Ti3Fe0.5Cr0.5O15 multiferroic polycrystals: Determining the intrinsic magnetoelectric responses by impedance spectroscopy

Bai

Chen

Yang

et al. 2015

Sci Rep

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Bismuth layer ferroelectrics (BLFs) pioneered by Aurivillius about sixty years ago have been revived recently because of the fatigue- and lead-free behaviors and high Curie temperature, and especially the robust magnetoelectric (ME) effect. However, discerning the intrinsic ME nature, and the inherence between charged defect dipole induced relaxation and spin-related behaviors are still an arduous task. Here, we report a quantitative analysis to reveal the intrinsic spin-lattice coupling in Aurivillius Cr-doped Bi5Ti3FeO15 (BTFCO) multiferroic polycrystals. Dielectric responses are systemically investigated by the temperature-dependent dielectric, module, impedance spectroscopy and equivalent circuit model, and two different dielectric relaxation processes occurred in grain interior of Aurivillius BTFCO polycrystals are clarified. One relaxation is proposed to associate with localized transfer of electrons between Fe3+ and Fe2+ while another one arises from the competition interaction of localized hopping of electrons between Fe3+ and Fe2+ and short-range migration of holes between Cr3+ and Cr6+. The variation of the intrinsic permittivity unambiguously confirms the coupling between spin and dipolar orderings in BTFCO polycrystals. These results offer a vital avenue for identifying the intrinsic and extrinsic signals of the electric and ME responses, and will give significant impetus to exploring the ME electronic devices of Aurivillius materials.

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Magnetic and dielectric properties of Aurivillius phase Bi6Fe2Ti3−2xNbxCoxO18 (0 ≤ x ≤ 0.4)

Abstract: Articles you may be interested inMagnetic, dielectric, and magneto-dielectric properties of rare-earth-substituted Aurivillius phase Bi6Fe1.4Co0.6Ti3O18Two distinct dielectric relaxation mechanisms in the low-frequency range in Bi 5 Ti Nb W O 15 ceramics Appl.

Cited by 56 publications

References 30 publications

Multiferroic and dielectric properties of Bi4LaTi3FeO15 ceramics

Multiferroic and dielectric properties of Bi4LaTi3FeO15 ceramics

Structural, magnetic, and dielectric studies of the Aurivillius compounds SrBi5Ti4MnO18 and SrBi5Ti4Mn0.5Co0.5O18

Dielectric behaviors of Aurivillius Bi5Ti3Fe0.5Cr0.5O15 multiferroic polycrystals: Determining the intrinsic magnetoelectric responses by impedance spectroscopy

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