The mechanism of cross-relaxation in Y3Al5O12: Tb3+

Robbins, D. J.; Cockayne, B.; Lent, B.; Glasper, J. L.

doi:10.1016/0038-1098(76)90743-2

Cited by 184 publications

(102 citation statements)

References 9 publications

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“…The critical distance for cross-relaxation is about 13 A (ref. 23) as observed in the garnet structure. A sphere with a 13 A radius around Tb 3+ has a volume of about 9200 A 3.…”

Section: Discussionmentioning

confidence: 73%

Energy transfer phenomena in Tb3+-activated gadolinium tantalate (GdTaO4)

Lammers

Blasse

1984

Materials Research Bulletin

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The energy transfer phenomena in GdTaO 4 activated with Tb 3+ have been investigated. It is shown that the ratio of the 5D 3 and 5D 4 emission intensities of Tb 3+ depends strongly on the excitation wavelength. The Tb 3+ 5D 3 level is populated by direct excitation into the Tb 3+ 4f 8 levels, by energy transfer from the Gd 3+ 6p level or by energy transfer from the intrinsic tantalate group via the Gd 3+ 6p level. The Tb 3+ 5D 4 level is populated by direct excitation into the 4f75d state, by energy transfer from the Gd 3+ 61 level, or by cross-relaxation from the 5D 3 level. Direct relaxation from 5D 3 to 5D 4 is found to be improbable. The 61 ÷ 6p 3+ relaxation of the excited Gd ion is slow in comparison with the competing energy transfer processes.

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“…The critical distance for cross-relaxation is about 13 A (ref. 23) as observed in the garnet structure. A sphere with a 13 A radius around Tb 3+ has a volume of about 9200 A 3.…”

Section: Discussionmentioning

confidence: 73%

Energy transfer phenomena in Tb3+-activated gadolinium tantalate (GdTaO4)

Lammers

Blasse

1984

Materials Research Bulletin

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“…R, is the critical separation a t which the cross-relaxation rate equals that of the interna.1 single ion relaxation. Robbins et al [20] showed for Y,A1,Ol,: Tb3+ that there was a good agreement between theory and experiment for the dipole-dipole coupling mechanism. For this interaction the critical distance for cross-relaxation in Y3A15012 : Tb3+ was found to be 1.34nm.…”

Section: Discussionmentioning

confidence: 73%

Luminescence Properties of Rare‐Earth‐Activated Gadolinium Fluoride (GdF₃) and Oxyfluorides (GdOF)

Lammers

Blasse

1985

Physica Status Solidi (b)

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The luminescence properties of REa+-activated GdF, and GdOP are studied for both uv and X-ray excitation. GdOF exists in two modifications, an orthorhombic and a tetragonal one and both are used as a matrix. GdF, is activated with Pr3+, Sm3+, Tb3+, Dy3+, ErS+, and Tm3+ and with a transition metal ion, viz. Mn2+. Both modifications of GdOF are activated with Tb3+, Er3+, and Tma+. Especially the Tb3+-activated samples are very efficient green phosphors under both uv and X-ray excitation.Die Lumineszenzeigenschaften der SE3+-aktivierten Verbindungen GdF, und GdOF werden sowohl unter UV-als Rontgenstrahlanregung untersucht. GdOF existiert in zwei Phasen, eine mit orthorhombischer und eine mit tetragonaler Struktur. Beide Phasen werden als Wirtsgitter verwendet. GdF, wird mit Pr3+, Sm3+, Tb3+, Dy3+, Era+ und Tm3+ und rnit einem tfbergangsmetallion, nLmlich Mn2+-aktiviert. Beide GdOF-Phasen werden mit Tb3+, Era+ und Tm3+ aktiviert. Besonders die Tb3+-aktivierten Proben sind griine Luminophore mit hoher Ausbeute, sowohl unter W-als auch unter Rontgenstrahlanregung.

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“…24 The dependence of the branch ratio on the Tb concentration has been extensively studied and is well-explained with the cross-relaxation theory. 22,25 This dependence can be used as intrinsic evidence of the phase formation and uniform doping. The quantitative agreement indicates that the designed materials are synthesized successfully, and the parallel SC microreactions can be applied to a combinatorial study of high-temperature materials.…”

Section: Resultsmentioning

confidence: 99%

Parallel Solution Combustion Synthesis for Combinatorial Materials Studies

et al. 2005

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A parallel solution combustion synthesis technique was developed for combinatorial materials studies. The vigorous combustion reactions were successfully limited in the microreactors by using a substrate-netmask microreactor system and the lowest adoptable furnace temperature. Using this technique, a luminescent materials library of Y 3 Al 5 O 12 /Tb x was synthesized with the aid of an ink-jet delivery system. Structure and luminescence characterizations were implemented using X-ray diffraction and UV/X-ray spectroscopies, respectively. The results show that this technique is reliable and applicable to combinatorial study of powder materials with high synthesis temperature.

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The mechanism of cross-relaxation in Y3Al5O12: Tb3+

Cited by 184 publications

References 9 publications

Energy transfer phenomena in Tb3+-activated gadolinium tantalate (GdTaO4)

Energy transfer phenomena in Tb3+-activated gadolinium tantalate (GdTaO4)

Luminescence Properties of Rare‐Earth‐Activated Gadolinium Fluoride (GdF₃) and Oxyfluorides (GdOF)

Parallel Solution Combustion Synthesis for Combinatorial Materials Studies

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The mechanism of cross-relaxation in Y3Al5O12: Tb3+

Cited by 184 publications

References 9 publications

Energy transfer phenomena in Tb3+-activated gadolinium tantalate (GdTaO4)

Energy transfer phenomena in Tb3+-activated gadolinium tantalate (GdTaO4)

Luminescence Properties of Rare‐Earth‐Activated Gadolinium Fluoride (GdF3) and Oxyfluorides (GdOF)

Parallel Solution Combustion Synthesis for Combinatorial Materials Studies

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Luminescence Properties of Rare‐Earth‐Activated Gadolinium Fluoride (GdF₃) and Oxyfluorides (GdOF)