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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gerasimova Y. V., Krylov A. S., Vtyurin A. N., Laptash N. M., Goryainov S. V.
Заглавие : A Raman scattering study of the phase transition in the ammonium oxyfluoride (NH4)(3)TiOF5
Разночтения заглавия :авие SCOPUS: A raman scattering study of the phase transition in the ammonium oxyfluoride (NH4)3TiOF5
Место публикации : Phys. Solid State: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2008. - Vol. 50, Is. 8. - P1534-1537. - ISSN 1063-7834, DOI 10.1134/S1063783408080246
Примечания : Cited References: 8
Предметные рубрики: (NH4)(3)WO3F3 OXYFLUORIDE
Аннотация: Raman spectra of a polycrystalline sample of the perovskite-like oxyfluoride (NH4)(3)TiOF5 are measured in the frequency region 100-3600 cm(-1) at temperatures ranging from 91 to 370 K under hydrostatic pressures of up to 9 GPa, which include the range of the phase transition from the orientationally disordered cubic phase to the low-symmetry phase. Anomalies in the spectral parameters due to the phase transition are revealed in the range of vibrations of TiOF5 octahedral groups.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Krylov A. S., Gerasimova J. V., Vtyurin A. N., Fokina V. D., Laptash N. M., Voyt E. I.
Заглавие : A study of phase transition in (NH4)(3)WO3F3 oxyfluoride by Raman scattering
Разночтения заглавия :авие SCOPUS: A study of phase transition in (NH4)3WO 3F3 oxyfluoride by Raman scattering
Место публикации : Phys. Status Solidi B. - 2006. - Vol. 243, Is. 2. - P.435-441. - ISSN 0370-1972, DOI 10.1002/pssb.200541259
Примечания : Cited References: 11
Предметные рубрики: ELPASOLITE RB2KSCF6
Аннотация: Raman scattering spectra of perovskite-like (NH4)(3)WO3F3 oxyfluoride are studied in the 70-3600 cm(-1) frequency range and the 93-323 K temperature range including the transition point from orientationally disordered cubic phase into the lower symmetry one. Internal vibrations of ammonium ions and WO3F3 octahedra have been found to exhibit transition anomalies. Analysis of measurements suggests that the transition under study is due mainly to the ordering of octahedra.
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Tyumentseva A. V., Yaroslavtsev R. N., Stolyar S. V., Komogortsev S. V., Velikanov D. A., Gerasimova Yu. V., Knyazev Yu. V.
Заглавие : Aminated magnetic nanoparticles functionalized with antibodies for cell separation
Коллективы : Российская академия наук, Физико-технический институт им. Е.К. Завойского ФИЦ Казанского научного центра РАН, Казанский (Приволжский) федеральный университет, Euro-Asian Symposium "Trends in MAGnetism", "Trends in MAGnetism", Euro-Asian Symposium
Место публикации : VIII Euro-Asian symposium "Trends in magnetism" (EASTMAG-2022): Book of abstracts/ program com. S. G. Ovchinnikov [et al.]. - 2022. - Vol. 2, Sect. M: Magnetism in biology and medicine. - Ст.M.P10. - P.442-443. - ISBN 978-5-94469-051-7
Примечания : Cited References: 2. - The study was supported by the Russian Science Foundation and the Krasnoyarsk Region Science and Technology Support Fund, grant No. 22-14-20020
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Stolyar S. V., Bayukov O. A., Chekanova L. A., Gerasimova Y. V., Sokolov A. Е., Iskhakov R. S., Yaroslavtsev R. N., Volochaev M. N., Artemyeva A. S., Cheremiskina E. V., Knyazev Yu. V.
Заглавие : Anisometric iron oxide-based nanoparticles and sols based on them: Preparation and properties
Место публикации : J. Supercond. Novel Magn. - 2019. - Vol. 32, Is. 4. - P.971–975. - ISSN 15571939 (ISSN) , DOI 10.1007/s10948-018-4784-7
Примечания : Cited References: 18. - The reported study was carried out with the financial support of the Russian Foundation for Fundamental Research, the Government of the Krasnoyarsk Territory, and the Krasnoyarsk Territory Fund for Support of Scientific and Technical Activity in the framework of scientific Projects No. 18-43-243003, No. 17-42-240080 and No. 17-43-240527. The work is supported by the Special Program of the Ministry of Education and Science of the Russian Federation for the Siberian Federal University.
Ключевые слова (''Своб.индексиров.''): nanoparticles and nanorods--chemical preparation--superparamagnetism
Аннотация: We have synthesized magnetic powders of the magnetite-maghemite series by the chemical reaction of the FeSO4 iron salt and the natural arabinogalactan polysaccharide. These particles with a high magnetization value (∼ 300 Gs) represent a mixture of spherical particles and nanorods. Particles of a spherical shape (diameter of ∼ 5–6 nm) show a superparamagnetic behavior at room temperature, while rods with a diameter of ∼ 5 nm and a length of 30 nm are magnetic. We have prepared sol samples based on the nanoparticle aqueous solution of arabinogalactan. Our results on the magnetism of the circular dichroism (MCD) on sol are consistent with the of Mössbauer spectroscopy data.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Abramova G. M., Petrakovskii G. A., Vtyurin A. N., Rasch J., Krylov A. S., Gerasimova Yu. V., Velikanov D. A., Boehm M., Sokolov V.
Заглавие : Anomalous Raman phenomenon of CuCrS2
Место публикации : J. of Ra man Spectroscopy. - 2010. - Vol. 41, Is. 12. - С. 1485-1488
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Stolyar S. V., Kolenchukova, Oksana A., Boldyreva, Anna V., Kudryasheva, Nadezda S., Gerasimova Yu. V., Krasikov A. A., Yaroslavtsev R. N., Bayukov O. A., Ladygina, Valentina P., Birukova, Elena A.
Заглавие : Biogenic ferrihydrite nanoparticles: Synthesis, properties in vitro and in vivo testing and the concentration effect
Коллективы : Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR); Government of the Krasnoyarsk Territory; Regional Science Foundation [20-416-242907]
Место публикации : Biomedicines. - 2021. - Vol. 9, Is. 3. - Ст.323. - ISSN 2227-9059(eISSN), DOI 10.3390/biomedicines9030323
Примечания : Cited References: 52. - This research was funded by the Russian Foundation for Basic Research, the Government of the Krasnoyarsk Territory and the Regional Science Foundation, grant number 20-416-242907
Аннотация: Biogenic ferrihydrite nanoparticles were synthesized as a result of the cultivation of Klebsiella oxytoca microorganisms. The distribution of nanoparticles in the body of laboratory animals and the physical properties of the nanoparticles were studied. The synthesized ferrihydrite nanoparticles are superparamagnetic at room temperature, and the characteristic blocking temperature is 23-25 K. The uncompensated moment of ferrihydrite particles was determined to be approximately 200 Bohr magnetons. In vitro testing of different concentrations of ferrihydrite nanoparticles for the functional activity of neutrophilic granulocytes by the chemiluminescence method showed an increase in the release of primary oxygen radicals by blood phagocytes when exposed to a minimum concentration and a decrease in secondary radicals when exposed to a maximum concentration. In vivo testing of ferrihydrite nanoparticles on Wister rats showed that a suspension of ferrihydrite nanoparticles has chronic toxicity, since it causes morphological changes in organs, mainly in the spleen, which are characterized by the accumulation of hemosiderin nanoparticles (stained blue according to Perls). Ferrihydrite can also directly or indirectly stimulate the proliferation and intracellular regeneration of hepatocytes. The partial detection of Perls-positive cells in the liver and kidneys can be explained by the rapid elimination from organs and the high dispersion of the nanomaterial. Thus, it is necessary to carry out studies of these processes at the systemic level, since the introduction of nanoparticles into the body is characterized by adaptive-proliferative processes, accompanied by the development of cell dystrophy and tension of the phagocytic system.
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Vtyurin A. N., Gerasimova Y. V., Krylov A. S., Laptash N. M., Krylova S. N.
Заглавие : Cubic to cubic phase transition in (NH4)3SnF7 ferroelastic crystal– Raman scattering study
Коллективы : Уральский федеральный университет им. первого Президента России Б.Н. Ельцина, Scanning Probe Microscopy, International Conference, Russia-China Workshop on Dielectric and Ferroelectric Materials, "Functional Imaging of Nanomaterials", International Youth Conference
Место публикации : 3th Int. Conf. "Scanning Probe Microscopy". 4th Russia-China Workshop on Dielectric and Ferroel. Mater. (SPM-2019-RCWDFM). Int. Youth Conf. "Functional Imaging of Nanomaterials": Abstract book of joint int. conf. - 2019. - Ст.P182. - P.285. - ISBN 978-5-9500624-2-1
Примечания : Cited References: 1. - This work was supported by Russian Foundation for Basic Research (Grant N 17-02-00920)
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gerasimova Yu. V., Krylov A. S., Vtyurin A. N., Laptash N. M., Pogoreltsev E. I., Dubrovskiy A. A., Gerasimov M. A.
Заглавие : Dynamic processes of the water sublattice in FeTiF6·xH2O·yD2O crystal
Место публикации : J. Raman Spectrosc. - 2022. - Vol. 53, Is. 10: Special Issue: Vibrational Spectroscopy of Water. - P.1704-1709. - ISSN 03770486 (ISSN), DOI 10.1002/jrs.6430
Примечания : Cited References: 31. - The reported study was funded by the Russian Foundation for Basic Research, Government of Krasnoyarsk Territory and Krasnoyarsk Regional Foundation of Science according to the research project “Spectral and magnetic properties of single crystals of transition metal fluoride hexahydrates” No. 20-42-240014
Аннотация: Phase transition in FeTiF6·xH2O·yD2O crystals has been studied by Raman spectroscopy. The 611 cm-1 line corresponding to mode A1g of [TiF6]2- system does not exhibit anomalous behavior associated with the phase transition. The temperature studies showed that below the phase transition temperature, the equivalence of D2O molecules in FeTiF6·xH2O·yD2O octahedron is broken. The phase transition mechanism in the compound under study is associated with Fe(xH2O·yD2O) complex.
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Shvets P. V., Romanova O. B., Gerasimova Yu. V., Zelenov F. V., Maksimova K. Y., Goikhman A. Y.
Заглавие : Electrophysical properties of films V2O3
Коллективы : "Actual problems of solid state physics", International scientific conference, "Актуальные проблемы физики твердого тела", международная научная конференция, Научно-практический центр по материаловедению НАН Беларуси
Место публикации : X International scientific conference “Actual problems of solid state physics": Book of abstracts/ int. sci. com. S. S. Aplesnin [et al]. - Minsk, 2023. - Sect.: Nanomaterials and Nanotechnologies. - P.306. - ISBN 978-985-7299-65-2
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10.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Gerasimova Y. V., Krylov A. S., Vtyurin A. N., Laptash N. M.
Заглавие : Ferroelastic phase transition in the family of crystals of double salts of fluorides according to vibrational spectroscopy data
Коллективы : IEEE International Symposium on Applications of Ferroelectrics, International Conference on ElectroCeramics, European Meeting on Ferroelectricity, International Workshop on PiezoMEMS, Piezoresponse Force Microscopy Workshop
Место публикации : Joint Conference of the IEEE ISAF, EMF, ICE, IWPM and PFM: Abstract book. - 2019. - P.174
Примечания : Cited References: 3. - The study was carried out with the financial support of the Russian Foundation for Basic Research №17-02-00920
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11.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gerasimova Yu. V., Krylov A. S., Vtyurin A. N., Laptash N. M., Krylova S. N.
Заглавие : Ferroelastic phase transition in the family of double fluoride crystals by Raman spectroscopy
Коллективы : European Meeting on Ferroelectricity
Место публикации : Ferroelectrics. - 2020. - Vol. 568, Is. 1. - P.185-190. - DOI 10.1080/00150193.2020.1713348
Примечания : Cited References: 14. - This research is supported by Russian Foundation for Basic Research under Grant No. 17-02-00920
Аннотация: In order to clarify ordering mechanisms of ferroic phase transitions in double fluoride salts (NH4)3SnF7, (NH4)3GeF7 and (NH4)3TiF7, their Raman scattering spectra have been studied in wide ranges of frequencies (20–3400 cm−1) and temperatures (8–410 K). Substitution of the central ion in the octahedron groups was found to change not only the phase transition types and sequences, but to modify the types of structural disorder as well, which is a special feature of these high-symmetry fluoride crystals.
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12.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gerasimova J. V., Vtyurin A. N.
Заглавие : Evans hole in internal modes IR spectrum of WO3F33-ions in (NH4)(3)WO3F3 crystal
Место публикации : Chem. Phys. Lett.: ELSEVIER SCIENCE BV, 2012. - Vol. 523. - P.144-147. - ISSN 0009-2614, DOI 10.1016/j.cplett.2011.12.041
Примечания : Cited References: 11. - We would like to thank Prof. E. M. Aver'yanov for discussion, and V. A. Ouskin for the technical assistance. This work has been supported by the Russian Foundation for Basic Researches, Grant No. 11-02-98002-r_sibir_a.
Предметные рубрики: INFRARED-SPECTRA
PHASE-TRANSITIONS
OXYFLUORIDE
MOLECULES
Аннотация: Infrared absorption of (NH4)(3)WO3F3 compound has been studied. Profile of asymmetric band in 600-1000 cm (1) range associated with polar W-O vibrations of WO3F33- ions is explicable on the basis of multi-oscillatory dynamics with account of damping. Complex profile with Evans holes proves that internal modes of WO3F33- anions in the fluorine-oxygen octahedron interact due to the effects of the local field. (C) 2011 Elsevier B. V. All rights reserved.
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13.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Dubrovskiy A. A., Knyazev Yu. V., Velikanov D. A., Vorotynov A. M., Laptash N. M., Gerasimova Yu. V.
Заглавие : Giant anisotropy of magnetic properties of hydrated iron fluoridotitanate molecular single crystal
Коллективы : International Baltic Conference on Magnetism, Балтийский федеральный университет им. И. Канта
Место публикации : V International Baltic Conference on Magnetism. IBCM: Book of abstracts. - 2023. - P.57
Примечания : Cited References: 4. - РНФ № 23-22-10037 ; Красноярский регион. фонд науки
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14.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Dubrovskiy A. A., Knyazev Yu. V., Velikanov D. A., Vorotynov A. M., Laptash N. M., Gerasimova Yu. V.
Заглавие : Giant anisotropy of magnetic properties of hydrated iron fluoridotitanate single crystal
Место публикации : J. Alloys Compd. - 2022. - Vol. 898. - Ст.162748. - ISSN 09258388 (ISSN), DOI 10.1016/j.jallcom.2021.162748
Примечания : Cited References: 53. - The reported study was funded by Russian Foundation for Basic Research , Government of Krasnoyarsk Territory and Krasnoyarsk Regional Fund of Science according to the research project "Spectral and magnetic properties of single crystals of transition metal fluoride hexahydrates.” No. 20-42-240014
Аннотация: Study of the magnetic properties of the FeTiF6 ‧ 6 H2O single crystal has shown that this compound is a two-dimensional antiferromagnet with a Néеl temperature of TN = 8 K and its magnetic moment anisotropy attains 7000% at a temperature of T = 4.2 K. The Mössbauer spectroscopy data unambiguously indicate the paramagnetic state of iron cations in the temperature range of 4.2–300 K. However, a sharp change in the difference between the quadrupole doublet linewidths at 10 K has been observed, which is consistent with the temperature of magnetic ordering. It has been suggested that the long-range magnetic order is established in the crystal through the formation of the exchange coupling revealed by the electron spin resonance measurements on the oriented single crystals.
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15.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Shadrin K. V., Yakovleva Yu. A., Kryukova O. V., Makarskaya G. V., Tarskikh S. V., Pyankov V. F., Pakhomova V. G., Gerasimova Yu. V., Yaroslavtsev R. N., Vorobyev S. A., Stolyar S. V.
Заглавие : Influence of arabinogalactan-coated selenium nanoparticles on the formation of free radicals in Ehrlich ascites carcinoma cells
Колич.характеристики :8 с
Место публикации : BioNanoScience. - 2024. - Vol. 14, Is. 1. - P.268-275. - ISSN 21911630 (ISSN), DOI 10.1007/s12668-023-01251-6. - ISSN 21911649 (eISSN)
Примечания : Cited References: 40
Аннотация: The antioxidant properties of selenium nanoparticles coated with arabinogalactan have been studied. The nanoparticles were characterized by transmission electron microscopy and infrared spectroscopy. Arabinogalactan-coated selenium nanoparticles were incubated together with Ehrlich ascitic carcinoma cells and then exposed to microwave radiation. The antioxidant properties of selenium nanoparticles were evaluated using chemiluminescent analysis. The viability of Ehrlich ascitic carcinoma cells under microwave irradiation and incubation with selenium nanoparticles was assessed by flow cytometry. Under conditions of exposure to experimental tumor cells of microwave radiation, the concentration of free radicals in the cells did not change. The effect of arabinogalactan-coated selenium nanoparticles on tumor cells is expressed as an increase in the delay time for the activation of the antioxidant system.
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16.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Stolyar S. V., Kryukova O. V., Yaroslavtsev R. N., Bayukov O. A., Knyazev Yu. V., Gerasimova Yu. V., Pyankov V. F., Latyshev N. V., Shestakov N. P.
Заглавие : Influence of magnetic nanoparticles on cells of Ehrlich ascites carcinoma
Место публикации : AIP Adv. - 2021. - Vol. 11, Is. 1. - Ст.015019. - ISSN 21583226 (ISSN), DOI 10.1063/9.0000165
Примечания : Cited References: 22. - The electron microscopy and magnetic resonance study was carried out on the equipment of the Krasnoyarsk Territorial Center for Collective Use, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences. This work was supported by the Council of the President of the Russian Federation for State Support of Young Scientists and Leading Scientific Schools (project no. MK-1263.2020.3). The research was funded by RFBR, Krasnoyarsk Territory and Krasnoyarsk Regional Fund of Science, project number 20-42-242902
Аннотация: The effect of magnetic nanoparticles coated with arabinogalactan on the viability of Ehrlich ascites carcinoma (EAC) cells was studied. The nanoparticles were studied by transmission electron microscopy, Mossbauer spectroscopy, IR spectroscopy, and ferromagnetic resonance. A correlation between the proportion of dead EAC cells in suspension and the intensity of the EPR signal of dinitrosyl iron complexes was found. This result may be due to the presence of NO molecules.
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17.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Dubrovskiy A. A., Knyazev Yu. V., Gerasimova Yu. V., Udovenko A. A., Laptash N. M.
Заглавие : Influence of the Jahn-Teller effect on magnetic anisotropy in single crystals of fluorine hexahydrates of transition metals
Место публикации : Phys. Solid State. - 2022. - Vol. 64, Is. 11. - P.1709-1712. - ISSN 10637834 (ISSN), DOI 10.21883/PSS.2022.11.54194.406. - ISSN 10906460 (eISSN)
Примечания : Cited References: 16. - The work was done with financial support from the Russian Foundation for Basic Research, Government of Krasnoyarsk Krai and the Krasnoyarsk Krai Foundation of Science within the research project No. 20-42-240014
Аннотация: The magnetic properties of fluorine hexahydrates of transition metals have been studied. It was found that the presence of spin-orbit interaction of the transition metal ion has a significant effect on anisotropy of magnetic properties. Depending on the direction of interaction of the orbital magnetic moment of a transition metal cation with a crystal field easy direction of magnetization changes from the crystallographic b-axis to the c-axis.
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18.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Vtyurin A. N., Gerasimova Y. V., Shestakov N. P., Ivanenko A. A.
Заглавие : Influence of the Substitution of the Central Me Atom in Ammonium Oxyfluorides on Phase Transitions: IR Spectroscopy Study
Разночтения заглавия :авие SCOPUS: Influence of the substitution of the central Me atom in ammonium oxyfluorides on phase transitions: IR spectroscopy study
Место публикации : Phys. Solid State: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2011. - Vol. 53, Is. 4. - P840-844. - ISSN 1063-7834, DOI 10.1134/S1063783411040330
Примечания : Cited References: 7. - This study was supported by the Russian Foundation for Basic Research (project no. 08-02-00066-a).
Предметные рубрики: (NH4)(3)WO3F3
Аннотация: Comparative investigations of infrared absorption spectra of ion-molecular crystals of the ammonium-containing oxyfluorides (NH(4))(3)WO(3)F(3) and (NH(4))(3)MoO(3)F(3) have been performed. It has been found that the parameters of the vibrational spectra exhibit anomalies in the ranges of internal vibrations of the MeO(3)F(3) octahedral groups and ammonium ions near the phase transition temperatures. A comparative analysis of the IR spectra allows us to affirm that the studied phase transition in (NH(4))(3)WO(3)F(3) is primarily associated with the ordering of octahedral groups, whereas in (NH(4))(3)MoO(3)F(3), it is mainly due to the ordering of ammonium groups and the distortion of ammonium ions by the crystal environment.
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19.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gerasimova Y. V., Oreshonkov A. S., Vtyurin A. N., Ivanenko A. A., Isaenko L. I., Ershov A. E., Pogoreltsev E. I.
Заглавие : Infrared absorption investigation of the role of octahedral groups upon the phase transition in the Rb2KMoO3F3 crystal
Коллективы : Russian Foundation for Basic Research [12-02-31205_mol_a]; Ministry of Education and Science of the Russian Federation [8379]; Interdisciplinary Integration Project of the Siberian Branch of the Russian Academy of Science [28]
Место публикации : Phys. Solid State: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2013. - Vol. 55, Is. 11. - P.2331-2334. - ISSN 1063-7834, DOI 10.1134/S1063783413110097
Примечания : Cited References: 10. - This study was supported by the Russian Foundation for Basic Research (project no. 12-02-31205_mol_a), the Ministry of Education and Science of the Russian Federation within the framework of the Russian Federal Target Program "Scientific and Scientific-Pedagogical Human Resources for the Innovative Russia" (agreement no. 8379), and the Interdisciplinary Integration Project of the Siberian Branch of the Russian Academy of Science No. 28.
Аннотация: The infrared absorption spectra of the oxyfluoride Rb2KMoO3F3 have been measured in the frequency range corresponding to stretching vibrations of the Mo-O anion octahedron with the purpose of clarifying their role in the phase transition. A semi-empirical calculation of two possible configurations of quasioctahedral MoO3F3 groups has been performed. The results of the investigations have demonstrated that some octahedra in the crystal structure change the local symmetry from C (3v) to C (2v) due to the phase transition (T = 197 K).
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20.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gerasimova Y. V., Sofronova S. N., Gudim, I. A., Oreshonkov A. S., Vtyurin A. N., Ivanenko A. A.
Заглавие : Infrared absorption spectra of a Nd0.5Ho0.5Fe3(BO3)4 crystal
Место публикации : Phys. Solid State: MAIK Nauka-Interperiodica / Springer, 2016. - Vol. 58, Is. 1. - P.155-159. - ISSN 10637834 (ISSN), DOI 10.1134/S106378341601011X
Примечания : Cited References: 15. - This study was supported in part by the Russian Foundation for Basic Research (project no. 12-02-00825).
Предметные рубрики: HoFe3(BO3)4
Аннотация: Infrared absorption spectra of a Nd0.5Ho0.5Fe3(BO3)4 crystal in the spectral range of 30–1700 cm–1 have been measured at temperatures from 6 to 300 K. The experimental spectra have been analyzed based on the semiempirical calculation of the lattice dynamics and the analysis of correlation diagrams of borate complexes. No changes associated with structural phase transitions have been detected in the temperature range of measurements; the effect of magnetic ordering on the infrared absorption spectra has not been observed.
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