Optical phonon behavior of columbite MgNb2O6 single crystals

Xu, Duanfu; Liu, Wenqiang; Zhou, Qiang; Cui, Tian; Yuan, Hongming; Wang, Wenquan; Liu, Ying; Shi, Zhan; Liang, Li

doi:10.1063/1.4893937

Cited by 4 publications

(1 citation statement)

References 20 publications

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“…The Raman tensors are signicant in the polarized Raman investigation of materials, especially in spectrum-scattering intensity, which is directionally dependent upon an intrinsic coordinate system. 8,18 In this study, the a, b, and c-axes of the crystal lattices are expressed as X, Y, and Z. To analyze a component a ij of a given tensor, the incident light should be congured to polarized along the i direction and the scattering light can only be observed when polarized along the j direction.…”

Section: Resultsmentioning

confidence: 99%

The Raman scattering of trirutile structure MgTa₂O₆ single crystals grown by the optical floating zone method

Gao

Liu

et al. 2019

RSC Adv.

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Section: Resultsmentioning

confidence: 99%

The Raman scattering of trirutile structure MgTa₂O₆ single crystals grown by the optical floating zone method

Gao

Liu

et al. 2019

RSC Adv.

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Conduction mechanisms and relaxation phenomena along with electronic transition of ZnO/ZnNb2O6/Nb2O5 composite

Essalah

Leroy

Carru

et al. 2021

Ceramics International

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Deciphering the Origin of the Oxygen Defects in Single Phase CoNb₂O₆ Nanofibers Probed by Raman Scattering

Park,

Ko,

Lee

et al. 2024

J. Phys. Chem. C

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In this study, we investigate the oxygen defects in cobalt niobate (CoNb 2 O 6 ) by using Raman scattering and FTIR spectroscopy. Columbite niobate compounds, such as CoNb 2 O 6 , are known for their unique dielectric, magnetic, and photocatalytic properties, making them suitable for various applications, including microwave resonators and filters, Li-ion batteries, and white LED technologies. The CoNb 2 O 6 structure comprises NbO 6 and CoO 6 octahedra with oxygen atoms classified into terminal, bridge, and chain positions based on their bonding environment. Our measurements reveal the activation of symmetry-forbidden oxygen-related phonon modes, specifically a Raman-forbidden mode (B 2u symmetry) at 782 cm −1 in Raman spectra and an IR-forbidden mode (A g symmetry) at ∼875 cm −1 in FTIR spectra, indicating the presence of oxygen-related defects. Furthermore, Raman mapping shows a random distribution of intensities for the defect mode, particularly near sample cracks, suggesting an association with oxygen vacancies. These findings enhance our understanding of the impact of defects on the spectral features of CoNb 2 O 6 and provide insight into the distribution of defects in this material.

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Optical phonon behavior of columbite MgNb2O6 single crystals

Abstract: Superconductivity and the disorder effect in Ag and Al double doped Mg B 2

Cited by 4 publications

References 20 publications

The Raman scattering of trirutile structure MgTa₂O₆ single crystals grown by the optical floating zone method

The Raman scattering of trirutile structure MgTa₂O₆ single crystals grown by the optical floating zone method

Conduction mechanisms and relaxation phenomena along with electronic transition of ZnO/ZnNb2O6/Nb2O5 composite

Deciphering the Origin of the Oxygen Defects in Single Phase CoNb₂O₆ Nanofibers Probed by Raman Scattering

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Optical phonon behavior of columbite MgNb2O6 single crystals

Abstract: Superconductivity and the disorder effect in Ag and Al double doped Mg B 2

Cited by 4 publications

References 20 publications

The Raman scattering of trirutile structure MgTa2O6 single crystals grown by the optical floating zone method

The Raman scattering of trirutile structure MgTa2O6 single crystals grown by the optical floating zone method

Conduction mechanisms and relaxation phenomena along with electronic transition of ZnO/ZnNb2O6/Nb2O5 composite

Deciphering the Origin of the Oxygen Defects in Single Phase CoNb2O6 Nanofibers Probed by Raman Scattering

Contact Info

Product

Resources

About

The Raman scattering of trirutile structure MgTa₂O₆ single crystals grown by the optical floating zone method

The Raman scattering of trirutile structure MgTa₂O₆ single crystals grown by the optical floating zone method

Deciphering the Origin of the Oxygen Defects in Single Phase CoNb₂O₆ Nanofibers Probed by Raman Scattering