Local atomic structure of the high refractive index La2O3–Nb2O5–B2O3 glasses

Alekseev, R. O.; Avakyan, L. A.; Shakhgil’dyan, G. Yu.; Komandin, G. A.; Savinkov, V. I.; Romanov, N. A.; Велигжанин, А. А.; Лебедев, С. П.; Ermakova, A. M.; Сухарина, Г. Б.; Бугаев, Л. А.; Сигаев, В. Н.

doi:10.1016/j.jallcom.2022.165357

Cited by 14 publications

(1 citation statement)

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“…Figure a displays the Raman spectra of the specimen in the range of 0–1100 cm –1 . Within this range, the bending vibration of Si–O bonds corresponds to 100–400 cm –1 , while the stretching vibration of Si–O bonds corresponds to 650–1000 cm –1 . The 200–550 cm –1 range corresponds to the bending vibration of [NbO 6 ], and the 550–720 cm –1 range corresponds to the vibration of the Nb–O–Nb bond in [NbO 6 ] .…”

Section: Resultsmentioning

confidence: 99%

Formation of Niobate Complex Glass-Ceramic and Effect of Crystal Nucleates on Dielectric Properties

Guo,

Zhu,

Bai

et al. 2024

Crystal Growth & Design

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Glass-ceramics have great potential as a dielectric material in energy storage. Grain refinement is an effective measure to improve the energy storage performance of dielectric materials. In this study, NaNbO 3 −Ba 0.27 Sr 0.75 Nb 2 O 6 (NN-BSN) complex glass-ceramic was prepared through the investigation and design of heat-treatment processes. The NN perovskite structure and BSN tungsten bronze structure are comparable, and heat treatment was employed to encapsulate the two phases, thereby achieving grain refinement. High-resolution transmission electron microscopy (HR-TEM) images were measured using Gatan Digital software, revealing a maximum lattice spacing of 0.067 nm in the selected area and a maximum interplanar spacing of 0.003 nm −1 in the SAED pattern. Furthermore, the influence of ZrO 2 and TiO 2 , with equal content, on the material structure and performance stability was studied. Raman analysis revealed that ZrO 2 exists as an intermediate network in the structure, resulting in good high-temperature stability of the samples. TiO 2 acted as a crystal nucleating agent, promoting grain growth and enhancing the polarization performance of the samples.

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Section: Resultsmentioning

confidence: 99%