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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Malakhovskii A. V., Kutsak T. V., Sukhachev A. L., Aleksandrovsky A. S., Krylov A. S., Gudim, Irina A., Molokeev M. S.
Заглавие : Spectroscopic properties of ErAl3(BO3)4 single crystal
Место публикации : Chem. Phys.: Elsevier Science, 2014. - Vol. 428. - P.137–143. - ISSN 0301-0104, DOI 10.1016/j.chemphys.2013.11.008. - ISSN 1873-4421
Примечания : Cited References: 43. - The work was supported by the Russian Foundation for Basic Researches grant 12-02-00026, by the Russian President Grants SS-1044.2012.2 and 4828.2012.2, by project No 3.9.5 PSB RAS, and by the Ministry of Education and Science of Russian Federation grant 8365
Предметные рубрики: RARE-EARTH IONS
GREEN UP-CONVERSION
ER3+ IONS
MICROCHIP LASER
ABSORPTION INTENSITIES
YAL3(BO3)4 CRYSTAL
OPTICAL-ABSORPTION
FIELD ANALYSIS
GROWTH
LUMINESCENCE
Ключевые слова (''Своб.индексиров.''): rare earth compounds--er3+--spectroscopic properties--judd-ofelt analysis--luminescence
Аннотация: Single crystal of ErAl3(BO3)4 was grown and its structure was studied. Polarized absorption spectra of ErAl3(BO3)4 single crystal were measured in the spectral range 1670–330 nm (6000–30000 cm−1). The Judd–Ofelt spectroscopic parameters have been determined: Ω2 = 4.87 × 10−20 cm2, Ω4 = 2.49 × 10−20 cm2, Ω6 = 2.72 × 10−20 cm2. These parameters have been used to calculate the radiative transition probabilities, the multiplet luminescence branching ratios and the fluorescence life times of the manifolds. The luminescence spectra due to transitions 2H11/2 → 4I15/2 (526 nm), 4S3/2 → 4I15/2 (548 nm), 4F9/2 → 4I15/2 (662 nm), 2H11/2 → 4I13/2 + 4I9/2 → 4I15/2 (800 nm) and 4S3/2 → 4I13/2 (855 nm) were recorded in α, σ and π polarizations. The most intensive luminescence belonged to 4S3/2 → 4I15/2 transition (548 nm).Поляризованные спектры поглощения ErAl3 (BO3) 4 монокристалла были измерены в спектральном диапазоне 1670-330 нм (6000-30000 см-1). Спектроскопические параметры Джадда-Офельта были определены как: Ω2 = 4,87 • 10-20 см2, Ω4 = 2.49 • 10-20 см2, Ω6 = 2,72 • 10-20 см2. Параметры были использованы для расчета вероятностей излучающих переходов, мультиплетные отношения люминесценции раскола и времена жизни мультиплетов. Спектры люминесценции за счет переходов 2П11 / 2 → 4I15 / 2 (526 нм), 4S3 / 2 → 4I15 / 2 (548 нм), 4F9 / 2 → 4I15 / 2 (662 нм), 2П11 / 2 → 4I13 / 2 + 4I9 / 2 → 4I15 / 2 (800 нм) и 4S3 / 2 → 4I13 / 2 (855 нм) были записаны в α, σ и π поляризации. Наиболее интенсивное свечение принадлежало переходу 4S3 / 2 → 4I15 / 2 (548 нм).
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Malakhovskii A. V., Sokolov V. V., Sukhachev A. L., Aleksandrovsky A. S., Gudim, I. A., Molokeev M. S.
Заглавие : Spectroscopic properties and structure of the ErFe3(BO3)4 single crystal
Коллективы : Russian Foundation for Basic Research [12-02-00026]; Council on Grants from the Russian Federation for Support of Leading Scientific Schools [NSh-2886.2014.2]; Department of Physical Sciences of the Russian Academy of Sciences [3.9.5]
Место публикации : Phys. Solid State: Pleiades Publishing, 2014. - Vol. 56, Is. 10. - P.2056-2063. - ISSN 1063-7834, DOI 10.1134/S1063783414100199. - ISSN 1090-6460
Примечания : Cited References: 28. - This study was supported by the Russian Foundation for Basic Research (project no. 12-02-00026), the Council on Grants from the President of the Russian Federation for Support of Leading Scientific Schools (grant no. NSh-2886.2014.2), and the Department of Physical Sciences of the Russian Academy of Sciences (program no. 3.9.5).
Предметные рубрики: RARE-EARTH IONS
ABSORPTION INTENSITIES
Er3+ IONS
SPECTRA
PROBE
Аннотация: Single crystals of the ErFe3(BO3)4 borate were synthesized and their structure was studied. Absorption spectra of the Er3+ ion in σ- and π-polarizations of f-f transitions 4 I 15/2 → 4 I 13/2, 4 I 11/2, 4 I 9/2, 4 F 9/2, 4 S 3/2, 2 H 11/2, and 4 F 7/2 were measured. The refractive index and birefringence were measured as a function of the wavelength. The transition intensities were analyzed within the Judd-Ofelt theory, and the following parameters of the theory were obtained: Ω2 = 7.056 × 10−20 cm2, Ω4 = 1.886 × 10−20 cm2, and Ω6 = 2.238 × 10−20 cm2. Using these parameters, the radiative transition probabilities, luminescence branching ratios, and radiative lifetimes of multiplets were calculated.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Popova M. N., Chukalina E. P., Erofeev D. S., Jablunovskis A., Gudim I. A., Malkin B. Z.
Заглавие : High-resolution optical spectroscopy and modeling of spectral and magnetic properties of multiferroic ErFe3(BO3)4
Коллективы : Russian Science FoundationRussian Science Foundation (RSF) [19-12-00413]
Место публикации : Phys. Rev. B. - 2020. - Vol. 101, Is. 20. - Ст.205108. - ISSN 2469-9950, DOI 10.1103/PhysRevB.101.205108. - ISSN 2469-9969(eISSN)
Примечания : Cited References: 38. - Financial support of the Russian Science Foundation under Grant No. 19-12-00413 is acknowledged.
Предметные рубрики: F-F TRANSITIONS
ENERGY-LEVELS
ER3+ IONS
GROWTH
Аннотация: We carried out the high-resolution broadband temperature-dependent polarized optical spectroscopy and theoretical studies of ErFe3(BO3)4 single crystals in the paramagnetic and antiferromagnetic (T˂TN=39K) phases. On the basis of the experimentally determined 45 crystal-field (CF) levels of Er3+ ions at sites with the C2 point symmetry, CF calculations were performed, a set of physically grounded CF parameters was obtained and used to model the temperature dependences of the Er magnetic moments measured in neutron-scattering experiments, as well as the magnetic susceptibility and magnetization of the compound; the contributions of the quasi-one-dimensional iron magnetic subsystem were calculated in the frame of the previously developed self-consistent four-particle cluster model. The modeling strongly supports an easy-plane collinear structure of iron magnetic moments and excludes earlier proposed additional magnetic phase.
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