Dielectric, ferroelectric, and photoluminescent properties of Sm-doped Bi4Ti3O12 thin films synthesized by sol-gel method

Du, Xingru; Huang, Wenhua; He, Shuai; Kumar, T. Santhosh; Hao, Aize; Qin, Ni; Bao, Dinghua

doi:10.1016/j.ceramint.2018.07.174

Cited by 25 publications

(8 citation statements)

References 33 publications

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“…The Bi4Ti3O12 Aurivillius phase material was found to be a suitable host for Sm 3+ and a series of thin films were prepared. With Bi4-xSmxTi3O12 having x=0.14, a maximum intensity and a photoluminescence lifetime of ≈0.8 ms was achieved (73). Similarly, Er 3+ substitution in Aurivillius phase materials is an area of interest in developing photoluminescence materials and a strong up-conversion photoluminescence was observed in Bi4-xErxTi3O12 with x = 0.2 (74).…”

Section: V3 Photoluminescence Characteristicsmentioning

confidence: 98%

Naturally Layered Aurivillius Phases: Flexible Scaffolds for the Design of Multiferroic Materials

Halpin¹,

Keeney²

2021

Mat & Dev

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The Aurivillius layer-structures, described by the general formula Bi2O2(Am-1BmO3m+1), are naturally 2-dimensionally nanostructured. They are very flexible frameworks for a wide variety of applications, given that different types of cations can beaccommodated both at the A- and B-sites. In this review article, we describe how the Aurivillius phases are a particularly attractive class of oxides for the design of prospective single phase multiferroic systems for multi-state data storage applications, as they offer the potential to include substantial amounts of magnetic cations within a strongly ferroelectric system. The ability to vary m yields differing numbers of symmetrically distinct B-site locations over which the magnetic cations can be distributed and generates driving forces for cation partitioning and magnetic ordering. We discuss how out-of-phase boundary and stacking fault defects can further influence local stoichiometry and the extent of cation partitioning in these intriguing material systems.

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Section: V3 Photoluminescence Characteristicsmentioning

confidence: 98%

Naturally Layered Aurivillius Phases: Flexible Scaffolds for the Design of Multiferroic Materials

Halpin¹,

Keeney²

2021

Mat & Dev

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“…Notably, the f‐f electronic transitions are partially prohibited by the Laporte rule. However, the parity‐forbidden rule may be partially broken to allow for 4 f electron transition when lanthanide elements occupy different lattice sites of the host lattice [23] . From a viewpoint of the process, continuous absorption of photons results in the generation of excited states and the interactions between these excited state ions also determine basic upconversion luminescence processes [24] .…”

Section: Fundamental Concepts Of Ucnpsmentioning

confidence: 99%

Lanthanide‐Doped Nanoparticles for Near‐Infrared Light Activation of Photopolymerization: Fundamentals, Optimization and Applications

Yuan

Liu

et al. 2021

The Chemical Record

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Photopolymerization refers to a type of polymerization process in which light is utilized as excitation source to initiate polymerization of monomers and oligomers. Despite great progress, photopolymerization is typically induced by ultraviolet or visible light, which still greatly restrains its applications. Upconversion nanoparticles (UCNPs) represent a class of optical nanomaterials that are able to convert low‐energy near‐infrared (NIR) light into high‐energy ultraviolet (or visible light) emissions. In this context, UCNP‐assisted photopolymerization has recently attracted extensive attentions due to its unique advantages. In this account, recent advances in the fundamentals, optimization and emerging applications of UCNP‐based photopolymerization are reviewed. Fundamental theories of upconversion luminescence and photopolymerization will be introduced first. Various optimization approaches to improve UCNP‐assisted photopolymerization are then summarized, followed by diverse emerging applications. Challenges and future perspectives in this area will be provided as a conclusion.

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“…Thus, layered perovskite ferroelectrics have a polar axis perpendicular to the c ‐orientation, and their ferroelectric polarization is perpendicular to the c ‐orientation 17–19 . Layered perovskite ferroelectric thin films are mainly known as lead‐free ferroelectric thin films 20,21 . However, they have disadvantages in that their ferroelectric properties are inferior to those of general PZT thin films 17–19 .…”

Section: Introductionmentioning

confidence: 99%

“…[17][18][19] Layered perovskite ferroelectric thin films are mainly known as lead-free ferroelectric thin films. 20,21 However, they have disadvantages in that their ferroelectric properties are inferior to those of general PZT thin films. [17][18][19] To improve the ferroelectric properties of the layered perovskite ferroelectric thin films, it is required to secure the a-oriented crystallinity.…”

Section: Introductionmentioning

confidence: 99%

Epitaxial Bi₅Ti₃FeO₁₅ thin films on Nb‐doped SrTiO₃ substrates

Keum,

Son

2023

J Am Ceram Soc.

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We investigated the ferroelectric switching dynamics as well as the multiferroic and piezoelectric properties of highly a‐oriented epitaxial Bi5Ti3FeO15 (BTFO) thin films on Nb‐doped SrTiO3 single crystal substrates. The BTFO thin films favored highly a‐oriented crystallinity because c‐oriented crystallinity decreased under deposition conditions in which substrate temperature and thin film deposition rate were simultaneously lowered. The highly a‐oriented epitaxial BTFO thin films showed the best ferroelectric properties, whereas the highly c‐oriented epitaxial BTFO thin films showed the best ferromagnetic properties. In particular, the BTFO thin films in which a‐ and c‐oriented crystallinity were properly mixed showed the best piezoelectric properties.

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Dielectric, ferroelectric, and photoluminescent properties of Sm-doped Bi4Ti3O12 thin films synthesized by sol-gel method

Cited by 25 publications

References 33 publications

Naturally Layered Aurivillius Phases: Flexible Scaffolds for the Design of Multiferroic Materials

Naturally Layered Aurivillius Phases: Flexible Scaffolds for the Design of Multiferroic Materials

Lanthanide‐Doped Nanoparticles for Near‐Infrared Light Activation of Photopolymerization: Fundamentals, Optimization and Applications

Epitaxial Bi₅Ti₃FeO₁₅ thin films on Nb‐doped SrTiO₃ substrates

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Dielectric, ferroelectric, and photoluminescent properties of Sm-doped Bi4Ti3O12 thin films synthesized by sol-gel method

Cited by 25 publications

References 33 publications

Naturally Layered Aurivillius Phases: Flexible Scaffolds for the Design of Multiferroic Materials

Naturally Layered Aurivillius Phases: Flexible Scaffolds for the Design of Multiferroic Materials

Lanthanide‐Doped Nanoparticles for Near‐Infrared Light Activation of Photopolymerization: Fundamentals, Optimization and Applications

Epitaxial Bi5Ti3FeO15 thin films on Nb‐doped SrTiO3 substrates

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Product

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Epitaxial Bi₅Ti₃FeO₁₅ thin films on Nb‐doped SrTiO₃ substrates