Raman spectra and phase composition of MnGeO<sub>3</sub> crystals

Oreshonkov, Aleksandr S.; Gerasimova, Julia V.; Ershov, A.A.; Крылов, А. С.; Shaykhutdinov, K. A.; Vtyurin, A. N.; Мolokeev, Maxim S.; Terent’ev, K. Yu.; Mihashenok, N.V.

doi:10.1002/jrs.4816

Cited by 15 publications

(11 citation statements)

References 14 publications

(31 reference statements)

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“…In contrast, the O-Li bond is ionic and results in the O atom being closer to the P atom in the P-O-Li segment. Such a situation is comparable to other mixed-metal phosphate compounds (Zhang et al, 2018;Oreshonkov et al, 2016;Wang et al, 2019b).…”

Section: Crystal Structuresupporting

confidence: 75%

A novel stibium phosphate, LiBa(SbO)₂(PO₄)₃: synthesis, crystal structure and RE³⁺-activated (RE = Tb³⁺ and Eu³⁺) fluorescence performance

et al. 2019

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A new stibium phosphate, lithium barium bis(antimony oxide) tris(phosphate), LiBa(SbO)2(PO4)3, was prepared by the molten salt method with LiF as the flux. The crystal structure consists of an original three‐dimensional anionic framework of [(SbO)2(PO4)3]∞ built from PO4 tetrahedra sharing their corners with SbO6 octahedra. This framework delimits one‐dimensional tunnels where the lithium(I) and barium(II) ions are located. The UV–Vis spectrum shows that LiBa(SbO)2(PO4)3 was transparent from 350 to 800 nm, and is thus suitable as a luminescent host matrix. We then used Tb3+ and Eu3+ activators to test its luminous performance and the purities of the prepared phosphors were studied by powder X‐ray diffraction analysis with Rietveld refinements. Photoluminescence (PL) studies reveal that the emission spectra of 1 mol% RE3+‐doped (RE = Tb and Eu) samples can be excited by 371 and 394 nm light, emitting green and orange–red light, respectively, for Tb3+ and Eu3+. The CIE coordinates were measured to be (0.295, 0.571) and (0.6027, 0.3967), and the luminescent lifetimes were calculated as 0.178 and 1.159 ms, respectively.

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Section: Crystal Structuresupporting

confidence: 75%

A novel stibium phosphate, LiBa(SbO)₂(PO₄)₃: synthesis, crystal structure and RE³⁺-activated (RE = Tb³⁺ and Eu³⁺) fluorescence performance

et al. 2019

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“…The lines corresponding to vibrations of different symmetry should manifest at different polarizations of incident and scattered radiation. [37][38][39][40][41][42][43][44][45] A clear angular dependence of the Raman signal (Fig. 7) was observed for single crystals of The angular dependence confirms the directional character of low frequency vibrations, whereas in the c direction no signal is observed, and the signal is most intense perpendicular to c.…”

mentioning

confidence: 84%

Raman spectroscopy studies of the terahertz vibrational modes of a DUT-8 (Ni) metal–organic framework

Крылов

Vtyurin

Petkov

et al. 2017

Phys. Chem. Chem. Phys.

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Low-frequency lattice vibrational modes have been discussed to play a crucial role in the phase transformation process of flexible metal-organic frameworks (MOFs). Therefore, Raman spectroscopy was applied to study the lattice dynamics of a pillared layer Moreover, the directional character of low-frequency vibrations in the flexible version of could be visualized by the orientation dependent Raman spectroscopy experiment.

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“…The dependencies F(r ij ) are the same for all atom pairs: F(r ij ) = λexp(−r ij /ρ), where λ and ρ are the parameters characterizing selected pair interaction. To find the parameters of the model, a special optimization program was written and tested for several representative compounds [38][39][40][41][42][43]. The obtained interatomic interaction parameters are presented in Table S1.…”

Section: Methodsmentioning

confidence: 99%

“…Figure S3 (Supporting Information). Crystallographic unit cell of NaK 3 FeCl 6 [41]. |Figure S5 (Supporting Information).…”

mentioning

confidence: 99%

Application of Raman spectroscopy for identification of rinneite (K₃NaFeCl₆) in inclusions in minerals

Grishina

Koděra

Goryaĭnov

et al. 2020

J Raman Spectroscopy

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Solid daughter phases in fluid and salt melt inclusions in minerals provide important clues to characterization of mineral-forming processes. The analysis of the fluid inclusions often requires the exposure of the daughter minerals. Rinneite (K 3 NaFeCl 6), which is a hygroscopic mineral, decomposes in air and cannot thus be identified by conventional methods. A combined approach has been applied for investigation of synthetic and natural rinneite to acquire its diagnostic Raman spectrum for a nondestructive identification. We used natural rinneite inclusions in halite, suitable for applying a complex of methods, to clear up the reference spectrum. Improved high-resolution X-ray diffraction (XRD) data obtained from natural rinneite inclusion are comparable with that of previously published, with similar unit cell dimensions. Polarized Raman spectra of natural inclusions were obtained using different geometries and polarization of the incident and scattered light. Interpretation of experimental Raman spectra was performed within the framework of lattice dynamics simulations and group analysis. Individual spectral bands are interpreted in terms of Raman-active vibrational modes of K 3 NaFeCl 6 structural units. Raman spectrum of synthetic rinneite with main peaks at 75, 91, 103, 143, 167, 171, 187, and 239 cm −1 agrees well with the spectra of rinneite inclusions in halite from the Nepa potash deposit and rinneite daughter minerals in salt melt inclusions hosted by quartz veinlets from the porphyry gold systems in the Central Slovakia Volcanic Field. This provides a firm basis for any future identification of this mineral worldwide, using nondestructive Raman spectroscopy.

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Raman spectra and phase composition of MnGeO₃ crystals

Cited by 15 publications

References 14 publications

A novel stibium phosphate, LiBa(SbO)₂(PO₄)₃: synthesis, crystal structure and RE³⁺-activated (RE = Tb³⁺ and Eu³⁺) fluorescence performance

A novel stibium phosphate, LiBa(SbO)₂(PO₄)₃: synthesis, crystal structure and RE³⁺-activated (RE = Tb³⁺ and Eu³⁺) fluorescence performance

Raman spectroscopy studies of the terahertz vibrational modes of a DUT-8 (Ni) metal–organic framework

Application of Raman spectroscopy for identification of rinneite (K₃NaFeCl₆) in inclusions in minerals

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Raman spectra and phase composition of MnGeO3 crystals

Cited by 15 publications

References 14 publications

A novel stibium phosphate, LiBa(SbO)2(PO4)3: synthesis, crystal structure and RE3+-activated (RE = Tb3+ and Eu3+) fluorescence performance

A novel stibium phosphate, LiBa(SbO)2(PO4)3: synthesis, crystal structure and RE3+-activated (RE = Tb3+ and Eu3+) fluorescence performance

Raman spectroscopy studies of the terahertz vibrational modes of a DUT-8 (Ni) metal–organic framework

Application of Raman spectroscopy for identification of rinneite (K3NaFeCl6) in inclusions in minerals

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Raman spectra and phase composition of MnGeO₃ crystals

A novel stibium phosphate, LiBa(SbO)₂(PO₄)₃: synthesis, crystal structure and RE³⁺-activated (RE = Tb³⁺ and Eu³⁺) fluorescence performance

A novel stibium phosphate, LiBa(SbO)₂(PO₄)₃: synthesis, crystal structure and RE³⁺-activated (RE = Tb³⁺ and Eu³⁺) fluorescence performance

Application of Raman spectroscopy for identification of rinneite (K₃NaFeCl₆) in inclusions in minerals