Anharmonicity and local noncentrosymmetric regions in BaTiO3 pressed powder studied by the Raman line temperature dependence

Pugachev, A. M.; Surovtsev, N. V.; Крылов, А. С.

doi:10.1016/j.ceramint.2020.06.024

Cited by 5 publications

(1 citation statement)

References 21 publications

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“…Raman spectroscopy is a fast and high-resolution tool for the characterization of electronic, optical, and phonon properties of materials. It is also utilized to investigate the phonon anharmonicity in various systems, such as two-dimensional (2D) materials [92][93][94], ferroelectric [95,96], thermoelectric [97,98], and multiferroics [99,100], associated with changes in temperature or pressure.…”

Section: Raman Spectroscopymentioning

confidence: 99%

Phonon anharmonicity: a pertinent review of recent progress and perspective

Wei

Sun

et al. 2021

Sci. China Phys. Mech. Astron.

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Anharmonic lattice vibrations play pivotal roles in the thermal dynamics in condense matters and affect how the atoms interact and conduct heat. An in-depth understanding of the microscopic mechanism of phonon anharmonicity in condensed systems is critical for developing better functional and energy materials. In recent years, various novel behaviors in condense matters driven by phonon anharmonic effects were discovered, such as soft mode phase transition, negative thermal expansion (NTE), multiferroicity, ultralow thermal conductivity (κ), high thermal resistance, and high-temperature superconductivity. These properties have endowed anharmonicity with many promising applications and provided remarkable opportunities for developing "Anharmonicity Engineering"-regulating heat transport towards excellent performance in materials. In this work, we review the recent development of studies on phonon anharmonic effect and summarize its origin, mechanism, research methods, and applications. Besides, the remaining challenges, future trends, and prospects of phonon anharmonicity are also discussed.

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Section: Raman Spectroscopymentioning

confidence: 99%

Phonon anharmonicity: a pertinent review of recent progress and perspective

Wei

Sun

et al. 2021

Sci. China Phys. Mech. Astron.

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Nanometer structure as a key to various phenomena in ferroelectrics

2021

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The Synthesis and Domain Structures of Single-Crystal-Like Mesoscale BaTiO3 Plates

et al. 2023

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The (001) plate-like BaTiO3 piezoelectric micromaterials are synthesized by topochemical microcrystal conversion technique. BaTiO3 plates with a length of 2~10 μm and thickness of 0.5~1.3 μm are obtained. The dependence of morphology on synthesis conditions is discussed in detail. The crystal symmetry and multiscale domain structures of BaTiO3 plates are systematically investigated by various characterizations. X-ray diffraction (XRD) and Raman spectra analyses demonstrate the tetragonal symmetry of the (001) oriented BaTiO3 plates at room temperature. The domain configurations of the micron BaTiO3 are investigated with a polarized light microscope (PLM) and piezoresponse force microscopy (PFM). The single-crystal-like quality and uniformity are supported by PLM observations. More importantly, the classical 90° banded ferroelectric domains of ~125 nm width are observed for the first time in such BaTiO3 plates. The domain features in the mesoscale BaTiO3 plate are discussed and compared with its bulk counterparts. The results may provide insights into understanding and designing the mesoscale BaTiO3 functional materials.

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Anharmonicity and local noncentrosymmetric regions in BaTiO3 pressed powder studied by the Raman line temperature dependence

Cited by 5 publications

References 21 publications

Phonon anharmonicity: a pertinent review of recent progress and perspective

Phonon anharmonicity: a pertinent review of recent progress and perspective

Nanometer structure as a key to various phenomena in ferroelectrics

The Synthesis and Domain Structures of Single-Crystal-Like Mesoscale BaTiO3 Plates

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