Ferroelectric properties and the origin of the magnetism in the Bi6Fe2Ti3O18 thin films

Sun, Hui; Zou, Baowen; Ni, Xiaoran; Mao, Xu; Chen, Xiaobing; Zhu, Jinsong

doi:10.1007/s10853-015-9093-y

Cited by 11 publications

(3 citation statements)

References 38 publications

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“…Currently, polycrystalline BFTO-n thin films were successfully prepared by typical chemical solution deposition method or sol-gel method [81][82][83][84][85][86][87][88][89][90], which consists of the solution preparation and spin coating processing. The practical substrate usually adopts the Pt/Ti/SiO 2 /Si substrate [81][82][83][84][85][86], fused quartz substrate [90], sapphire substrate [25], and so on. Figure 4d,e shows the field emission scanning electron microscope (FE-SEM) images of surface and fracture morphologies of the BFTO-n thin film.…”

Section: Thin Filmsmentioning

confidence: 99%

Progress and Perspectives on Aurivillius-Type Layered Ferroelectric Oxides in Binary Bi4Ti3O12-BiFeO3 System for Multifunctional Applications

Sun

Yin

2020

Crystals

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Driven by potentially photo-electro-magnetic functionality, Bi-containing Aurivillius-type oxides of binary Bi4Ti3O12-BiFeO3 system with a general formula of Bin+1Fen−3Ti3O3n+3, typically in a naturally layered perovskite-related structure, have attracted increasing research interest, especially in the last twenty years. Benefiting from highly structural tolerance and simultaneous electric dipole and magnetic ordering at room temperature, these Aurivillius-phase oxides as potentially single-phase and room-temperature multiferroic materials can accommodate many different cations and exhibit a rich spectrum of properties. In this review, firstly, we discussed the characteristics of Aurivillius-phase layered structure and recent progress in the field of synthesis of such materials with various architectures. Secondly, we summarized recent strategies to improve ferroelectric and magnetic properties, consisting of chemical modification, interface engineering, oxyhalide derivatives and morphology controlling. Thirdly, we highlighted some research hotspots on magnetoelectric effect, catalytic activity, microwave absorption, and photovoltaic effect for promising applications. Finally, we provided an updated overview on the understanding and also highlighting of the existing issues that hinder further development of the multifunctional Bin+1Fen−3Ti3O3n+3 materials.

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Section: Thin Filmsmentioning

confidence: 99%

Progress and Perspectives on Aurivillius-Type Layered Ferroelectric Oxides in Binary Bi4Ti3O12-BiFeO3 System for Multifunctional Applications

Sun

Yin

2020

Crystals

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“…Theoretical studies have suggested that a higher concentration of magnetic ions would be desirable achieving robust magnetic ordering above room temperature . Hence, significant research has been pursued on the structural, magnetic, and multiferroic properties of the Aurivillius compounds with n = 5 . However, the ferroelectric properties of such n = 5 Aurivillius compounds have received lesser attention as compared to the magnetic properties, the obtained ferroelectric hysteresis loop is not saturated with slanted feature.…”

mentioning

confidence: 99%

“…Although the remnant polarization showed a sustained downward trend, the rectangular nature of the ferroelectric loop was retained. This frequency‐dependent behavior is also observed in other ferroelectrics prepared by the CSD method and is caused by the variation in the coercive fields as a function of the frequency . Because of the slight offsets in the measured P–E hysteresis loops, the experimental E c values were determined using E c = ( E c + − E c − )/2, where E c + and E c − are the magnitudes of the positive and negative electric fields, respectively, at zero polarization.…”

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confidence: 99%

Retention Characteristics of Five‐Layered Aurivillus Films With Large Polarization

Song

Yang

Wang

et al. 2017

Physica Rapid Research Ltrs

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The value of 2Pr (twice the polarization at zero electric field) in the five‐layered Aurivillus film Bi6Fe2Ti3O18 is greater than 50 μC cm−2, which is almost an order of magnitude higher than that of the bulk (4 μC cm−2). Moreover, the well‐defined hysteresis loop of this film can persist at the measurement frequency of 100 kHz, indicating the ultra‐fast switching speed of such a domain. The frequency dependence of the coercive field obeys a power‐law form, Ectrue(ftrue)=bold-italicsfbold-italicd/bold-italicα, indicating that its domain switching kinetics are influenced by the motion of the domain wall. The polarization of the Bi6Fe2Ti3O18 thin film remains essentially constant at a waiting time of up to 2 × 104 s, and is independent of the applied electric field. The switchable polarization loss is 32% after 9 × 1010 read/write switching cycles at a frequency of 1 MHz. This change in the switchable polarization is discussed in terms of the aggregation of oxygen vacancies in the film.

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Multiferroic properties of sol–gel-derived Bi4LaFe0.5Co0.5Ti3O15 thin films of four-layered perovskite

Zhang

et al. 2017

J Mater Sci

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Ferroelectric properties and the origin of the magnetism in the Bi6Fe2Ti3O18 thin films

Cited by 11 publications

References 38 publications

Progress and Perspectives on Aurivillius-Type Layered Ferroelectric Oxides in Binary Bi4Ti3O12-BiFeO3 System for Multifunctional Applications

Progress and Perspectives on Aurivillius-Type Layered Ferroelectric Oxides in Binary Bi4Ti3O12-BiFeO3 System for Multifunctional Applications

Retention Characteristics of Five‐Layered Aurivillus Films With Large Polarization

Multiferroic properties of sol–gel-derived Bi4LaFe0.5Co0.5Ti3O15 thin films of four-layered perovskite

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