Temat: 78.20.Wc - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: Luminescence and Lifetimes of Pr$\text{}^{3+}$ Excited States in KLa$\text{}_{1-x}$Pr$\text{}_{x}$(MoO$\text{}_{4}$)$\text{}_{2}$ and KLa$\text{}_{1-x}$Pr$\text{}_{x}$(WO$\text{}_{4}$)$\text{}_{2}$ Crystals
Autorzy:: Macalik, L.
Ryba-Romanowski, W.
Gołąb, S.
Hanuza, J.
Legendziewicz, J.
Tematy:: 78.55.Hx
78.20.Wc; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/1945617.pdf Link otwiera się w nowym oknie
Opis:: Single crystals of double molybdates and tungstates of the formula KLa$\text{}_{1-x}$Pr$\text{}_{x}$(MO$\text{}_{4}$)$\text{}_{2}$ (M = Mo, W) with a concentration of Pr$\text{}^{3+}$ ions ranging from x=0.1 to x=0.005 have been prepared. Their electronic absorption and emission spectra have been measured and discussed as well as related to their crystal structures. Both the multiphonon relaxation and cross relaxation contribute to the decay of the $\text{}^{3}$P$\text{}_{0}$ level of Pr$\text{}^{3+}$ in these two matrices.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Preparation and Spectroscopy of Lanthanide Single Crystals with Isoleucine
Autorzy:: Legendziewicz, J.
Ciunik, Z.
Gawryszewska, P.
Sokolnicki, J.
Tematy:: 78.20.Wc
78.55.Hx; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/1929792.pdf Link otwiera się w nowym oknie
Opis:: Single crystals of lanthanide complexes (Ln = Pr, Nd, Eu) were obtained from aqueous solutions. Optical properties of the title compound are investigated by absorption, excitation, and emission spectra. Probabilities of electronic transitions were analysed and participation of vibronic components in the spectra were found. Temperature effect on the spectra was studied and analysed in terms of cooperative interaction.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Spectroscopic Properties of [Nd(C$\text{}_{3}$H$\text{}_{7}$NO)(NO$\text{}_{3}$)$\text{}_{3}$(H$\text{}_{2}$O)$\text{}_{3}$]·H$\text{}_{2}$O Single Crystal with Tenfold Oxygen Coordination Nd$\text{}^{3+}$ Centre
Autorzy:: Oczko, G.
Legendziewicz, J.
Tematy:: 78.20.Wc
78.55.Hx; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/1929793.pdf Link otwiera się w nowym oknie
Opis:: The absorption spectra of [Nd(C$\text{}_{3}$H$\text{}_{7}$NO)(NO$\text{}_{3}$)$\text{}_{3}$(H$\text{}_{2}$O)$\text{}_{3}$]·H$\text{}_{2}$O were measured at 293 K and 5 K and the intensities of f-f transitions were investigated. The electron-phonon features observed in absorption spectra were identified and compared with other available data for Nd systems.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Absorption Spectroscopy as a Probe of the Structure of Polyaminocarboxylate-Eu(III) Complexes in Solution
Autorzy:: Mondry, A.
Riehl, J. P.
Tematy:: 78.20.Wc
78.55.Hx; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/1929802.pdf Link otwiera się w nowym oknie
Opis:: Absorption spectroscopy was used to study the aqueous solution structure of Eu(III) complexes with DTPA (diethylenetriaminepentaacetic acid) and TTHA (triethylenetetraaminehexaacetic acid). Analysis of the oscillator strengths of the 4f ↔ 4f transitions and of the Judd-Ofelt intensity parameters, τ$\text{}_{λ}$, was performed in order to investigate the formation and the type of bonding in Eu(III)-DTPA and Eu(III)-TTHA species occurring in solution. The correlation of these results with those from other methods made it possible to suggest a relatively complete model of Eu(III)-polyaminocarboxylate coordination.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Optical Properties of Lanthanide Squarates
Autorzy:: Huskowska, E.
Legendziewicz, J.
Drożdżewski, P.
Tematy:: 78.20.Wc
78.20.Dj; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/1945684.pdf Link otwiera się w nowym oknie
Opis:: Two types of lanthanide squarate hydrates of formulae Eu(C$\text{}_{4}$O$\text{}_{4}$)(HC$\text{}_{4}$O$\text{}_{4}$)(H$\text{}_{2}$O)$\text{}_{6}$·H$\text{}_{2}$O (compound I) and [Ln$\text{}_{2}$(C$\text{}_{4}$O$\text{}_{4}$)$\text{}_{3}$(H$\text{}_{2}$O)$\text{}_{8}$] where Ln = Eu and Gd (compound II) were investigated. The optical properties of crystals I and selected spectral data of compound II are reported and confronted with earlier studies of europium complexes type II. Excitation and emission spectra were measured at 77 K. Effect of polymeric structure on spectroscopic properties is considered and correlated with the structural data. Cooperative intrachain interactions between metal ions coupled via squarate anions were pointed and cooperative absorption was recorded. To check the presence of the Eu$\text{}^{2+}$ traces, the EPR and γ-irradiation measurements were applied. Raman spectra of the compound II (where Ln = from Sm to Lu) were measured in the range 50-500 cm$\text{}^{-1}$. Positions of the bands were considered in function of ionic radius of lanthanide ion. The above, together with the data from excitation spectra, allows to localize the Ln-O bands. Vibronic components in electronic spectra were elucidated and assigned.
Dostawca treści:: Biblioteka Nauki

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na półce

Skocz do pozycji: 6.

Tytuł:: Spectroscopy Studies of Erbium and Dysprosium Acetate Single Crystals
Autorzy:: Mondry, A.
Bukietyńska, K.
Tematy:: 78.20.Wc
81.40.Tv; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/1945559.pdf Link otwiera się w nowym oknie
Opis:: Electronic absorption spectra of erbium and dysprosium acetate single crystals were measured. The intensities of 4f-4f transitions were calculated and the Judd-Ofelt Ω$\text{}_{λ}$ parameters evaluated. Heavy lanthanide acetates differ from other lanthanide carboxylate compounds by relatively high "hypersensitive" transition intensities and the Ω$\text{}_{2}$ parameters. These results are discussed in terms of a stronger polarization effect which can be explained by the distinctly shorter Ln-OH$\text{}_{2}$ bond in comparison with the Ln-OOC bond in the investigated system.
Dostawca treści:: Biblioteka Nauki

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na półce

Skocz do pozycji: 7.

Tytuł:: First Observation of Visible Luminescence from Trivalent Gadolinium
Autorzy:: Wegh, R. T.
Meijerinkx, A.
Tematy:: 78.20.Wc
42.62.Fi; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/1945629.pdf Link otwiera się w nowym oknie
Opis:: The $\text{}^{6}$G$\text{}_{J}$ → $\text{}^{6}$P$\text{}_{J}$ emission for Gd$\text{}^{3+}$ in LiYF$\text{}_{4}$ around 600 nm is reported. As far as we are aware, this is the first observation of visible luminescence from trivalent gadolinium.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Energy Level Position of Ni and Band Offsets in Zn$\text{}_{1-x}$Cd$\text{}_{x}$Sc:Ni and ZnS$\text{}_{x}$Sc$\text{}_{1-x}$:Ni
Autorzy:: Surkova, T.
Giriat, W.
Godlewski, M.
Kaczor, P.
Zakrzewski, A. J.
Permogorov, S.
Tenishev, L.
Tematy:: 78.20.Wc
71.55.Gs; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/1934015.pdf Link otwiera się w nowym oknie
Opis:: Absorption and reflectivity measurements have been carried out for Zn$\text{}_{1-x}$Cd$\text{}_{x}$Se:Ni and ZnS$\text{}_{x}$Se$\text{}_{1-x}$:Ni solid solutions. Energy level positions of nickel 2+/1+ charge state have been used for estimation of band offsets for the valence and conduction bands of ZnCdSe/ZnSe and ZnSSe/ZnSe. Intra-shell transitions of Ni$\text{}^{2+}$ were also studied.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Photoluminescence of Co-Doped ZnCdSe and ZnSSe Alloys
Autorzy:: Surkova, T. P.
Born, H.
Thurian, P.
Hoffmann, A.
Busse, W.
Gumlich, H.-E.
Broser, I.
Giriat, W.
Tematy:: 71.55.Gs
78.20.Wc; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/1968428.pdf Link otwiera się w nowym oknie
Opis:: Photoluminescence measurements have been carried out for Zn$\text{}_{1-x}$ Cd$\text{}_{x}$ Se:Co and ZnS$\text{}_{x}$Se$\text{}_{1-x}$:Co mixed crystals. Changes of recombination channels are observed in mixed crystals as compared to the emission of host binary compounds. Character of changes is slightly different for the alloys with cation and anion substitution. Photoluminescence kinetics of the L-line and of two other Co$\text{}^{2+}$ intra-shell emission bands was measured to determine radiative decay rates.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Spectroscopic ProPerties of Eu$\text{}^{3+}$ Ion in KEu(MoO$\text{}_{4}$)$\text{}_{2}$ Crystal
Autorzy:: Hanuza, J.
Macalik, L.
Macalik, B.
Stręk, W.
Tematy:: 78.20.Wc
78.55.Hx; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/1929784.pdf Link otwiera się w nowym oknie
Opis:: IR, Raman, electron absorption and emission spectra of KEu(MoO$\text{}_{4}$)$\text{}_{2}$ crystal were measured at the temperature range 8-300 K. The oscillator strengths of f-f transitions were evaluated.
Dostawca treści:: Biblioteka Nauki

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