Структура электронных состояний соединений Gd-=SUB=-5-=/SUB=-Sb-=SUB=-3-=/SUB=- и Gd-=SUB=-5-=/SUB=-Ge-=SUB=-2-=/SUB=-Sb по данным зонных расчетов и оптической спектроскопии

Results of investigations of the electronic structure and optical properties of Gd5Sb3 and Gd5Ge2Sb compounds are presented. Calculations of band spectra were carried out in frame of local density approximation with a correction for strong correlation effects in 4f shell of rare-earth ion (DFT+U+SO method). Optical constants of these materials were measured by ellipsometric technique in wide wavelength interval. Energy dependencies of a number of spectral parameters were determined. The nature of quantum light absorption is discussed on the base of comparative analysis of the experimental and calculated spectra of optical conductivity.

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Electronic structure and optical properties of (BeTe)n/(ZnSe)m superlattices

Materials Science-Poland ◽

10.1515/msp-2016-0004 ◽

2016 ◽

Vol 34 (1) ◽

pp. 115-125 ◽

Cited By ~ 3

Author(s):

M. Caid ◽

H. Rached ◽

D. Rached ◽

R. Khenata ◽

S. Bin Omran ◽

...

Keyword(s):

Refractive Index ◽

Optical Properties ◽

Electronic Structure ◽

Ground State ◽

Optical Constants ◽

Local Density ◽

Band Gaps ◽

Full Potential ◽

Density Approximation ◽

Binary Compounds

AbstractThe structural, electronic and optical properties of (BeTe)n/(ZnSe)m superlattices have been computationally evaluated for different conﬁgurations with m = n and m≠n using the full-potential linear mufﬁn-tin method. The exchange and correlation potentials are treated by the local density approximation (LDA). The ground state properties of (BeTe)n/(ZnSe)m binary compounds are determined and compared with the available data. It is found that the superlattice band gaps vary depending on the layers used. The optical constants, including the dielectric function ε(ω), the refractive index n(ω) and the refractivity R(ω), are calculated for radiation energies up to 35 eV.

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PROPERTIES OF RARE EARTH SYSTEMS BY THE RELATIVISTIC SELF-INTERACTION-CORRECTED LOCAL-DENSITY-APPROXIMATION

Anomalous Rare Earths and Actinides ◽

10.1016/b978-1-4832-2948-5.50195-7 ◽

1987 ◽

pp. 658-660

Author(s):

P. CORTONA ◽

C. SOMMERS

Keyword(s):

Rare Earth ◽

Local Density Approximation ◽

Local Density ◽

Density Approximation ◽

Earth Systems ◽

Rare Earth Systems

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Properties of rare earth systems by the relativistic self-interaction-corrected local-density-approximation

Journal of Magnetism and Magnetic Materials ◽

10.1016/0304-8853(87)90696-2 ◽

1987 ◽

Vol 63-64 ◽

pp. 658-660 ◽

Cited By ~ 1

Author(s):

P. Cortona ◽

C. Sommers

Keyword(s):

Rare Earth ◽

Local Density Approximation ◽

Local Density ◽

Density Approximation ◽

Earth Systems ◽

Rare Earth Systems

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Unusual upconversion emission from single NaYF4:Yb3+/Ho3+ microrods under NIR excitation

CrystEngComm ◽

10.1039/c4ce00627e ◽

2014 ◽

Vol 16 (29) ◽

pp. 6697-6706 ◽

Cited By ~ 35

Author(s):

Wei Gao ◽

Hairong Zheng ◽

Qingyan Han ◽

Enjie He ◽

Ruibo Wang

Keyword(s):

Optical Properties ◽

Rare Earth ◽

Optoelectronic Devices ◽

Upconversion Emission ◽

Rare Earth Ion ◽

Potential Applications

Rare earth ion-doped upconversion materials show great potential applications in optical and optoelectronic devices due to their novel optical properties.

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OPTICAL PROPERTIES OF THE CUBIC AlxGa1-xN ALLOY

Modern Physics Letters B ◽

10.1142/s0217984913501273 ◽

2013 ◽

Vol 27 (17) ◽

pp. 1350127

Author(s):

S. HADJI ◽

S. BERRAH ◽

H. ABID

Keyword(s):

Refractive Index ◽

Optical Properties ◽

Plane Wave ◽

Absorption Coefficient ◽

Local Density Approximation ◽

Local Density ◽

Full Potential ◽

Density Approximation ◽

Augmented Plane Wave ◽

Coefficient Versus

In this paper, we present numerical calculations based on the full potential augmented plane wave (FP-LAPW) method within the local density approximation (LDA) to study the optical properties of the ternary alloy Al x Ga 1-x N . The shape of the dielectric function, the refractive index, and the absorption coefficient versus photon energy were presented. From the results, we deduce the possibility of this alloy to be used in the optoelectronic and photovololtaic area.

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Электронная структура и оптические спектры соединений GdFeAl и GdFeSi

Физика твердого тела ◽

10.21883/ftt.2021.06.50925.019 ◽

2021 ◽

Vol 63 (6) ◽

pp. 700

Author(s):

Ю.В. Князев ◽

А.В. Лукоянов ◽

Ю.И. Кузьмин ◽

А.Г. Кучин ◽

С.П. Платонов

Keyword(s):

Optical Properties ◽

Electronic Structure ◽

Comparative Analysis ◽

Optical Conductivity ◽

Electronic States ◽

Wavelength Interval ◽

Correlation Effects ◽

Calculated Density ◽

Density Of Electronic States ◽

Conductivity Spectra

Results of investigations of electronic structure and optical properties of GdFeAl and GdFeSi compounds are presented. Spin-plarized density of states and interband optical conductivity spectra were calculated in frame of DFT+U technique with a correction for strong correlation effects in 4f shell of Gd. Optical properties were measured by ellipsometric technique in wavelength interval of 0.22 – 16 μm. Nature of quantum light absorption is discussed on the base of comparative analysis of experimental and calculated spectra. It is shown that main features of frequency dependencies of the optical conductivity are interpret qualitatively by the calculated density of electronic states.

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Optical Properties of Rare Earth Ion Arrays Embedded into Lithium Niobate Micro-ring Resonators

10.1109/ipc48725.2021.9592868 ◽

2021 ◽

Author(s):

Dongmin Pak ◽

Arindam Nandi ◽

Michael Titze ◽

Edward S Bielejec ◽

Mahdi Hosseini

Keyword(s):

Optical Properties ◽

Rare Earth ◽

Lithium Niobate ◽

Ring Resonators ◽

Rare Earth Ion

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Recent Progress on the Spectroscopy of Rare Earth Ions in Core–Shells, Nanowires, Nanotubes, and Other Novel Nanostructures

Journal of Nanoscience and Nanotechnology ◽

10.1166/jnn.2008.18160 ◽

2008 ◽

Vol 8 (3) ◽

pp. 1126-1137 ◽

Cited By ~ 12

Author(s):

Xueyuan Chen ◽

Liqin Liu ◽

Guokui Liu

Keyword(s):

Optical Properties ◽

Rare Earth ◽

Recent Progress ◽

Spectroscopic Properties ◽

Rare Earth Ions ◽

Laser Materials ◽

Rare Earth Ion ◽

Fundamental Understanding ◽

Low Dimensional ◽

Rare Earth Series

Research and development of nanoscale luminescent and laser materials are part of the rapidly advancing nanoscience and nanotechnology. Because of unique spectroscopic properties and luminescent dynamics of f-electron states, doping luminescent rare earth ions into nano-hosts has been demonstrated as an optimistic approach to developing highly efficient and stable nanophosphors for various applications. In this article, we review the most recent progress in spectroscopic measurements of rare earth ion-activated low-dimensional nanostructures including nanolayers, core–shells, nanowires, nanotubes, and nanodisks. Among a large volume of work reported in the literature on many members of the rare earth series including Ce3+, Pr3+, Nd3+, Eu3+, and Er3+, we focus on recent findings in the spectroscopic and luminescence properties of Eu3+ doped nanolayers, core–shells, and nanotubes, because Eu3+ ions have been extensively studied and widely used as an ideal probe for fundamental understanding of nano-phenomena. Specifically, the dependence of the optical properties of rare earth ions on nanostructures is discussed in detail.

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