Dielectric properties of the bulk and interfacial layers in ferroelectric BaZr0.2Ti0.8O3 thin films

Wu, Muying; Li, Xiaopeng; Yu, Shihui; Sun, Yongtao; Dong, Helei

doi:10.1016/j.ceramint.2019.02.171

Cited by 9 publications

(3 citation statements)

References 39 publications

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“…Strains were imparted into the BZT films through differences in lattice parameters and thermal expansion behavior between the film and the underlying substrate. [18] The bulk rhombohe-dral structure was confirmed in the BZT polycrystalline ceramic with a lattice parameter ≈4.060 Å via XRD analysis. [10] We verified that the LAO, LSAT, and STO substrates have lattice parameters of ≈3.790 Å, ≈3.870 Å, and ≈3.905 Å, respectively.…”

Section: Resultsmentioning

confidence: 92%

Second Harmonic Generation Studies of Interfacial Strain Engineering in BaZr_0.2Ti_0.8O₃

Ren,

Maity,

Ascienzo

et al. 2023

Adv Elect Materials

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Film ferroelectrics demonstrate large breakdown strength, high energy density, and many unique phenomena not found in bulk materials. In this investigation, a rhombohedral BaZr0.2Ti0.8O3 (BZT) solid solution and various film‐substrate misfit strains are utilized to optimize the energy storage performance of ferroelectric thick films. Optical second harmonic generation is applied in both reflection and transmission geometries to reveal the renovation of entangled rhombohedral and tetragonal phases in the BZT films under compressive misfit strains. It is shown that the interfacial strain between the BZT film and substrate introduces the tetragonal domains. The competition between the tetragonal and rhombohedral phases creates the self‐assembled, anisotropically strained morphotropic structures to effectively accommodate the elastic and electrical stress fields through inside the thick BZT film. The BZT films demonstrate exceptional energy storage performance because of the adaptable nano‐domain structure within the bulk of the BZT films and may be engineered to optimize the superior performance of BZT films in energy storage.

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Section: Resultsmentioning

confidence: 92%

Second Harmonic Generation Studies of Interfacial Strain Engineering in BaZr_0.2Ti_0.8O₃

Ren,

Maity,

Ascienzo

et al. 2023

Adv Elect Materials

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“…Nano-hybridization has been studied intensively in many research fields [1][2][3][4][5][6] . Especially in thin film formation, nanohybridization has been achieved by design of the stacking structure.…”

Section: Introductionmentioning

confidence: 99%

“…Generally speaking, these thin film properties differ from those of the bulk materials [1][2][3] because of the crystal orientation, the lattice strain, and other characteristics [4][5][6] . Especially, lattice strain is a key factor to ascertain thin film properties.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Barium Titanate Nanocoated Silica Nanoparticles by Chemical Solution Deposition

Ohno

Maruyama

MIURA

et al. 2022

J. Jpn. Soc. Powder Powder Metallurgy

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After preparing SiO 2 -BaTiO 3 particles with core-shell structure using metal alkoxide method, we attempted to prepare a homogeneous BaTiO 3 coating layer by molecular design of a BaTiO 3 precursor solution used in the coating process. The molecular design was achieved by controlling the steric hindrance of the metal alkoxide. The molecular design effect on the coating process was investigated using transmission electron microscopy (TEM) and energy-dispersive X-ray spectrometry (EDS) with a scanning electron microscope (SEM). Results show that the coating process comprised the wettability of the alkoxide precursor solution to the core particles and the chemical reactivity of the alkoxide precursor solution. Additionally, we inferred the wettability of the alkoxide precursor solution as a major factor affecting the coating process.

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Photocatalytic Activity, Negative AC‐Electrical Conductivity, Dielectric Modulus, and Impedance Properties in 0.6 (Al_0.2La_0.8TiO₃) + 0.4 (BiFeO₃) Nanocomposite

Mallikarjuna

Ramesh

Kumar

et al. 2020

Crystal Research and Technology

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A series of nanocomposites with a chemical formula of (1−x) (Al0.2La0.8TiO3) + x (BiFeO3)/ALTBF is prepared through low temperature hydrothermal method. The tetragonal phases are detected at x = 0.2 and the x = 0.4–0.8 composites show the existence of cubic phases. The transmission electron microscope pictures show the presence of well‐defined spherical particles for all composites. Furthermore, photocatalytic activity is observed for x = 0.2–0.8 composites during time intervals ranging from 0 to 240 min. The x = 0.2, 0.6, and 0.8 nanocomposites reveal the usual behavior of ac‐electrical conductivity (σac), dielectric modulus parameters (M′ and M″), and impedance parameters (Z′ and Z″). However, interestingly, x = 0.4 composite performs the negative values of electrical parameters like σac, M′, M″, and Z″. This implies that x = 0.4 composite behaves like a metamaterial possessing negative indexed electrical parameters. Therefore, x = 0.4 composite can be well suited for microwave device applications at high frequency.

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Dielectric properties of the bulk and interfacial layers in ferroelectric BaZr0.2Ti0.8O3 thin films

Cited by 9 publications

References 39 publications

Second Harmonic Generation Studies of Interfacial Strain Engineering in BaZr_0.2Ti_0.8O₃

Second Harmonic Generation Studies of Interfacial Strain Engineering in BaZr_0.2Ti_0.8O₃

Preparation of Barium Titanate Nanocoated Silica Nanoparticles by Chemical Solution Deposition

Photocatalytic Activity, Negative AC‐Electrical Conductivity, Dielectric Modulus, and Impedance Properties in 0.6 (Al_0.2La_0.8TiO₃) + 0.4 (BiFeO₃) Nanocomposite

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Dielectric properties of the bulk and interfacial layers in ferroelectric BaZr0.2Ti0.8O3 thin films

Cited by 9 publications

References 39 publications

Second Harmonic Generation Studies of Interfacial Strain Engineering in BaZr0.2Ti0.8O3

Second Harmonic Generation Studies of Interfacial Strain Engineering in BaZr0.2Ti0.8O3

Preparation of Barium Titanate Nanocoated Silica Nanoparticles by Chemical Solution Deposition

Photocatalytic Activity, Negative AC‐Electrical Conductivity, Dielectric Modulus, and Impedance Properties in 0.6 (Al0.2La0.8TiO3) + 0.4 (BiFeO3) Nanocomposite

Contact Info

Product

Resources

About

Second Harmonic Generation Studies of Interfacial Strain Engineering in BaZr_0.2Ti_0.8O₃

Second Harmonic Generation Studies of Interfacial Strain Engineering in BaZr_0.2Ti_0.8O₃

Photocatalytic Activity, Negative AC‐Electrical Conductivity, Dielectric Modulus, and Impedance Properties in 0.6 (Al_0.2La_0.8TiO₃) + 0.4 (BiFeO₃) Nanocomposite