Pressure–Temperature Phase Diagram of Multiferroic TbFe2.46Ga0.54(BO3)4

Крылов, А. С.; Krylova, S. N.; Гудим, И. А.; Kitaev, Yu. É.; Golovkina, Elena; Zhang, Haibo; Vtyurin, A. N.

doi:10.3390/magnetochemistry8060059

Cited by 4 publications

(1 citation statement)

References 46 publications

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“…The angular step was 10 • . This experiment is similar to the work [14], wherein it is explained in detail.…”

Section: Raman Spectroscopymentioning

confidence: 78%

Flux Growth and Raman Spectroscopy Study of Cu2CrBO5 Crystals

Moshkina,

Eremin,

Molokeev

et al. 2023

Crystals

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Multicomponent flux systems based on both Li2WO4-B2O3-Li2O-CuO-Cr2O3 and Bi2O3-MoO3-B2O3-Na2O-CuO-Cr2O3 were studied in order to grow Cu2CrBO5 crystals. The conditions for Cu2CrBO5 crystallization were investigated by varyingthe component ratios, and the peculiarities of their interaction were characterized by studying the formation sequence of high-temperature crystallizing phases. Special attention was paid to the problem of Cr2O3 solubility. Phase boundaries between CuCrO2, Cu2CrO4, and Cu2CrBO5 were considered. The crystal structure of the obtained samples was studied viasingle crystal and powder X-ray diffraction. The chemical composition of the grown crystals was examined using the EDX technique. Anactual ratio of Cu:Cr = 1.89:1.11 was found for Cu2CrBO5 grown from the lithium-tungstate system, which showed a small deviation from 2:1, implying the presence of a part of bivalent Cr2+ in the samples. Anomalies in the thermal dependence of magnetization were analyzed and compared with the previously obtained data for Cu2CrBO5. The anomaly at TC ≈ 42 K and the antiferromagnetic phase transition at TN ≈ 119 K were considered. Polarized Raman spectra of Cu2CrBO5 were obtained for the first time, and a comparative analysis of the obtained data with other monoclinic and orthorhombic ludwigites is presented. Along with the polarized room temperature spectra, the thermal evolution of Raman modes near the antiferromagnetic phase transition temperature TN ≈ 119 K is provided. The influence of the magnetic phase transition on the Raman spectra of Cu2CrBO5 is discussed.

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“…The angular step was 10 • . This experiment is similar to the work [14], wherein it is explained in detail.…”

Section: Raman Spectroscopymentioning

confidence: 78%

Flux Growth and Raman Spectroscopy Study of Cu2CrBO5 Crystals

Moshkina,

Eremin,

Molokeev

et al. 2023

Crystals

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Analyzing the Symmetry of the Raman Spectra of Crystals According to Angular Dependences

Golovkina,

Krylova,

Vtyurin

et al. 2024

Bull. Russ. Acad. Sci. Phys.

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Symmetry analysis of Raman spectra of crystals based on angular dependencies

Golovkina,

Krylova,

Vtyurin

et al. 2024

Izvestiâ Akademii nauk SSSR. Seriâ fizičeskaâ

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Suggested a method to reconstruct the Raman scattering tensor by studying the angular dependences of Raman line intensities in tiny unoriented microcrystals. The method was verified on well-known calomel Hg2Cl2 model crystals. The spectral line phase-indicators in the Raman spectra reveal different symmetry types of DUT-8 (Ni) metal-organic framework crystals in the open pores and closed pores phases. A technique can be used to reconstruct the Raman scattering tensor of any unoriented crystalline samples.

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Pressure–Temperature Phase Diagram of Multiferroic TbFe2.46Ga0.54(BO3)4

Cited by 4 publications

References 46 publications

Flux Growth and Raman Spectroscopy Study of Cu2CrBO5 Crystals

Flux Growth and Raman Spectroscopy Study of Cu2CrBO5 Crystals

Analyzing the Symmetry of the Raman Spectra of Crystals According to Angular Dependences

Symmetry analysis of Raman spectra of crystals based on angular dependencies

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