The reduction of RE3+ to RE2+ (RE=Eu, Sm and Tm) in SrB6O10 prepared in air by high-temperature solid state reaction was observed. The luminescent properties of Eu2+ and Tm2+ show f-d transition and Sm2+ shows f-f transition at room temperature. Three crystallographic sites for Sm2+ in matrix are available. Vibronic transition of D-5(0)-F-7(0) of Sm2+ was studied. The coupled phonon energy about 108 cm(-1), was determined: from the vibronic transition. Due to the thermal population from D-5(0) level, (D1-FJ)-D-5-F-7 (J=0, 1, 2) transitions of Sm2+ were observed at room temperature. A charge compensation mechanism is proposed as a possible explanation
Sr2Mg(B03)2 doped with Eu was synthesized respectively in air and weak reducing atmosphere (combusti...
Up to now, strontium aluminate SrAl4O7 (SA2) could be synthesized by solidification from the high te...
RadiochThe preparation, structure and luminescence of the Ca1−xSrxAl2O4:Eu2+,RE3+ system were studie...
The reduction of Eu3+ to Eu2+ in SrB6O10 prepared in air by a high-temperature solid state reaction ...
A valence change from RE3+ to RE2+ (RE=Eu, Sm, Yb) was observed in samples of SrB4O7: RE prepared by...
The valence change of samarium from trivalent to divalent in strontium hexaborate (SrB6O10) prepared...
The luminescence of Sm2+ in SrB4O7 was studied as a function of temperature from 10 K up to 600 K. A...
The reduction process from trivalent to divalent state for Sm3+ and Yb3+ ions in barium berates (BaB...
The Sm3+ doped Sr3B2O6 phosphors were synthesized using a solution combustion synthesis method follo...
The luminescence of Sm2+ in BaB8O13 are studied as a function of temperature. At 10 K, several cryst...
The coordination numbers for the samarium atoms and the Sm-O bond distances in SrB4O7:Sm and SrB6O10...
The luminescence properties of Sm2+ in Sr2B5O9R (R=Cl, Br) have been studied and compared with those...
Sr2Mg(BO3)(2) doped with Eu was synthesized respectively in air and weak reducing atmosphere (combus...
The photoluminescence of ferroelectric Sr0.6Ba0.4(NbO3)(2) congruent crystals doped with four differ...
Incorporation of europium luminescent centre in its chosen valence state Eu2+ or Eu3+ has been effec...
Sr2Mg(B03)2 doped with Eu was synthesized respectively in air and weak reducing atmosphere (combusti...
Up to now, strontium aluminate SrAl4O7 (SA2) could be synthesized by solidification from the high te...
RadiochThe preparation, structure and luminescence of the Ca1−xSrxAl2O4:Eu2+,RE3+ system were studie...
The reduction of Eu3+ to Eu2+ in SrB6O10 prepared in air by a high-temperature solid state reaction ...
A valence change from RE3+ to RE2+ (RE=Eu, Sm, Yb) was observed in samples of SrB4O7: RE prepared by...
The valence change of samarium from trivalent to divalent in strontium hexaborate (SrB6O10) prepared...
The luminescence of Sm2+ in SrB4O7 was studied as a function of temperature from 10 K up to 600 K. A...
The reduction process from trivalent to divalent state for Sm3+ and Yb3+ ions in barium berates (BaB...
The Sm3+ doped Sr3B2O6 phosphors were synthesized using a solution combustion synthesis method follo...
The luminescence of Sm2+ in BaB8O13 are studied as a function of temperature. At 10 K, several cryst...
The coordination numbers for the samarium atoms and the Sm-O bond distances in SrB4O7:Sm and SrB6O10...
The luminescence properties of Sm2+ in Sr2B5O9R (R=Cl, Br) have been studied and compared with those...
Sr2Mg(BO3)(2) doped with Eu was synthesized respectively in air and weak reducing atmosphere (combus...
The photoluminescence of ferroelectric Sr0.6Ba0.4(NbO3)(2) congruent crystals doped with four differ...
Incorporation of europium luminescent centre in its chosen valence state Eu2+ or Eu3+ has been effec...
Sr2Mg(B03)2 doped with Eu was synthesized respectively in air and weak reducing atmosphere (combusti...
Up to now, strontium aluminate SrAl4O7 (SA2) could be synthesized by solidification from the high te...
RadiochThe preparation, structure and luminescence of the Ca1−xSrxAl2O4:Eu2+,RE3+ system were studie...