Electronic structure of gadolinium calcium oxoborate

Nelson, A. J.; Adams, John J.; Schaffers, Kathleen I.

doi:10.1016/j.apsusc.2005.02.086

Cited by 8 publications

(5 citation statements)

References 20 publications

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“…The B 1s core level recorded from SBO is shown in figure 3(b). The BE(B 1s) value falls within the BE(B 1s) range defined earlier from other borates [51][52][53][54][55][56][57][58]. The Sr 2p doublet and C 1s core level are shown in figure 3(c).…”

Section: Resultssupporting

confidence: 72%

Electronic structure of α-SrB₄O₇: experiment and theory

Atuchin

Kesler

Зайцев

et al. 2013

J. Phys.: Condens. Matter

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The investigation of valence band structure and electronic parameters of constituent element core levels of α-SrB(4)O(7) has been carried out with x-ray photoemission spectroscopy. Optical-quality crystal α-SrB(4)O(7) has been grown by the Czochralski method. Detailed photoemission spectra of the element core levels have been recorded from the powder sample under excitation by nonmonochromatic Al Kα radiation (1486.6 eV). The band structure of α-SrB(4)O(7) has been calculated by ab initio methods and compared to XPS measurements. It has been found that the band structure of α-SrB(4)O(7) is weakly dependent on the Sr-related states.

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Section: Resultssupporting

confidence: 72%

Electronic structure of α-SrB₄O₇: experiment and theory

Atuchin

Kesler

Зайцев

et al. 2013

J. Phys.: Condens. Matter

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“…Indirect indications of the significant contributions of d-states of the metal cations to electronic structure of the CB bottom can be no manifestation of excitonic states in both the reflection and PLE spectra of LGBO over the energy range of 8.4-9.3 eV, Figs. 4 and 6, as well as the calculations [27] and the experimental data [28] on the electronic structure of similar compound Ca 4 GdO(BO 3 ) 3 .…”

Section: Electronic Structure Of Lgbo and 4fmentioning

confidence: 99%

Luminescence of Li6Gd(BO3)3 crystals upon ultraviolet and inner-shell excitations

Огородников¹,

Пустоваров²

2013

Journal of Luminescence

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a b s t r a c tThe paper presents the results of the study on luminescence and electronic excitations in Li 6 Gd(BO 3 ) 3 single crystals. The optical and luminescence spectroscopy with a sub-nanosecond time resolution upon selective photoexcitation in the energy range from 3.0 to 650 eV was used to investigate in detail the luminescence of both the Gd 3 þ host ions and Ce 3 þ impurity ions as well as the processes of energy transfer between them. The intrinsic ultraviolet emission at 3.95-3.97 eV due to 6 P j -8 S 7=2 transitions in the Gd 3 þ host ion and the fast luminescence at 2.8-3.0 eV due to 5d-4f 1 dipole-allowed transitions in the Ce 3 þ impurity ion were studied upon excitations through the intracenter, charge transfer, bandto-band, and inner-shell transitions. The specificity of the energy transfer upon excitation of photoluminescence in the energy range of absorption of the inner shells of different atoms of the crystal, as well as in the energy region of the giant resonance of 4d-4f transitions was revealed. On the basis of the experimental data, the bandgap E g ¼9.3 eV, the minimum energy of the 5d-4f 1 and charge transfer transitions were determined. The expected positions of the ground states of the 4f n and 4f nÀ1 5d levels of trivalent lanthanide ions as well as the 4f n þ 1 and 4f n 5d levels of divalent ions were calculated for all the lanthanide ions in Li 6 Gd(BO 3 ) 3 host crystal.

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“…It could be concluded that there not only exist the Gd-O bonds but also the other chemical interactions for gadolinium, such as Gd-O-C or Gd-O-C5 5O. The residual C-OH or COOH groups would help Gd 2 O 3 to connect with the RGO sheets [22]. And the peak for C (1s) spectrum could be deconvoluted into three main peaks: C5 5C at 284.5 eV, C-OH at 285.1 eV, and C5 5O at 287.0 eV (Fig.…”

Section: Resultsmentioning

confidence: 97%