New garnet compounds with trivalent rare-earth ions on both dodecahedral and octahedral sites

Suchow, Lawrence; Kokta, Milan R.; Flynn, Vincent J.

doi:10.1016/0022-4596(70)90061-7

Cited by 44 publications

(8 citation statements)

References 5 publications

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“…The comparison of these values with those reported in ref is not completely fair, as those were not standardized and therefore not absolute. Moreover, as shown in ref , at low dopant content nonideality of the lattice constant variation versus dopant content is often encountered in these materials.…”

Section: Resultsmentioning

confidence: 85%

“…In ref it is reported that upon expanding the lattice of YIG by the addition of 25% of the larger Bi 3+ (i.e., (Y 9/4 Bi 3/4 )Fe 5 O 12 ) the site preference of Lu 3+ for the (c) site decreases considerably. The possibility of synthesizing garnets with the general formula Nd 3 (Ga 2 - x RE x )Ga 3 O 12 was systematically investigated by Suchow et al In ref , Nd garnets were considered because of the large radius of Nd 3+ that guarantees that it will only enter the dodecahedral sites. Small rare earths such as Lu 3+ , Yb 3+ , Tm 3+ , Er 3+ , Ho 3+ , and Dy 3+ were investigated.…”

Section: Resultsmentioning

confidence: 99%

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Incorporation of Trivalent Cations in Synthetic Garnets A₃B₅O₁₂ (A = Y, Lu−La, B = Al, Fe, Ga)

et al. 2006

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Static-lattice atomistic calculations have been used to study the solution energy for the incorporation of 13 foreign cations at 3 different lattice positions of 12 synthetic garnets. Trends have been obtained as a function of the ionic radius of the dopant cation, and the predictions about site preference have been compared with both literature and experimental data. The preferred substitution site is mainly determined by the ionic size and has been correctly predicted in all cases. Moreover, the energy difference between the preferred substitution site and the next favored site is relatively small in several cases, and hence the foreign ions can be inserted at two different positions by using the correct stoichiometry. A remarkably different behavior has been encountered for Al garnets, due to the smaller size of the unit cell. In particular, some cations, such as Fe3+ and Ga3+, can be inserted at the dodecahedral position usually occupied by the rare-earth ion. Despite the limitations of the static-lattice approach, the results of the present simulations help in the understanding of the defect chemistry of garnets, which is strongly responsible for the physicochemical properties (such as luminescence and ferrimagnetism) that make garnets interesting for technological applications. Such results lead to the possibility of tuning the optical and luminescence properties of garnets by the formation of different types of solid solutions.

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Section: Resultsmentioning

confidence: 85%

Section: Resultsmentioning

confidence: 99%

Incorporation of Trivalent Cations in Synthetic Garnets A₃B₅O₁₂ (A = Y, Lu−La, B = Al, Fe, Ga)

et al. 2006

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“…Mixed fluorides (ZVEREV, KOLODNY) and scheelites (VORONKO et al 1966) have been thoroughly studied. Recently, papers are concerned with mixed garnets their growing and investigation have been reported (BRANDLY, BARNS;VORONKO et al 1972;SUCHOV et al 1970SUCHOV et al , 1972. Generation has been obtained from yttriumlutecium-alluminiuin garnet of the composition Yz,l~Lu~.~~~Nd~.oosAl,O,, (VORONKO et al 1972).…”

Section: Discussion Of Resultsmentioning

confidence: 97%

Quality evaluation of crystals of mixed oxides of elements of the third group of the periodic system

Arsenev¹,

Kamensky²,

Potyemkin³

1975

Cryst Res and Technol

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Mathematical modelling methods are considered for the evaluation of perspective use of various materials, dielectric crystals as matrices for laser elements of a certain application. Garnet structure crystals and perovskite structure crystals on the basis of mixed oxides of elements of the Third Group of the Periodic System are considered in detail. The determining influence of crystal-chemical aspects on the crystal quality and its further application is defined. On the basis of calculations a certain advantage of perovskito structure crystals (aluminate and scandates of rare earths) of garnets during their application as matrices for active elements of optical quantum generators is deduced. A possibility of creating laser elements on the the basis of solid solutions of perovsltite structure combinations is emphasized. paFoTe MeToHbI MaTeMaTwiecIEoro ivoHemipoBamm npmIeHcHbI Structure considerationsI n our preceding paper (ARSENEV et al.) methods of mathenlatical modelling were applied (ARISTOV, KAMENSKY) for evaluation of perspective application of various materials as matrices for active elements of lasers of a certain type. The evaluation was made with the help of a criterion termed Generalized Quality Level and determining the level of practical fitness of the material for the above mentioned purposes. According to the results of the calculations a number of laser crystals were determined presenting simple and mixed oxides of elements of the Third Group of the Periodic System. The purpose of the paper is to supply a more detailed consideration of the specified cornbinations class and to investigate a perspective search of new crystals of active elements of laser.The Third Group elements mixed oxides form, principally, combinations with garnet and perovskite structure. While garnets have been known in laser practice for quite a long time, perovskite combinations have caused investigators' interest in this relation quite recently. In this respect i t is of great interest to deal in detail with the development of crystals of the given group.

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“…The Ln 3+ distribution over 24c and 16a garnet sites is a topic which has been addressed with several purposes and under different approaches. [15][16][17][18][19][20][21][22][23] The main factor governing the site preference of Ln 3+ in the garnet structure is the ionic size, in such a way that garnets with any Ln 3+ cation occupying the dodecahedral 24c site are known, 15 and only the smallest size Ln 3+ cations, typically Dy 3+ to Lu 3+ and also Y 3+ or Sc 3+ , are able to enter into the octahedral 16a site, even up to its complete filling, but in this case a 24c cation with a considerably large size, for example Ca 2+ in the germanate series Ca 3 Ln 2 Ge 3 O 12 , 18 including Ca 3 Y 2 Ge 3 O 12 , 20 is required, thus the relative sizes of 24c and 16a cations also play a role. The presence of Yb 3+ in both garnet sites would offer the possibility of having the MD probe and ED reference ions in the same tested volume minimizing uncertainties related to excitation and detection processes, but so far the properties of Yb coexisting in both garnet sites have not been properly documented.…”

Section: Introductionmentioning

confidence: 99%

“…The presence of Yb 3+ in both garnet sites would offer the possibility of having the MD probe and ED reference ions in the same tested volume minimizing uncertainties related to excitation and detection processes, but so far the properties of Yb coexisting in both garnet sites have not been properly documented. Either the studies are limited to crystallographic aspects, 16,17,20 or the spectroscopicbased proposals 21,23 are not soundly supported by crystallographic data and/or crystal field (CF) interaction calculations.…”

Section: Introductionmentioning

confidence: 99%

A probe of the radiation field magnetic component based on octahedral Yb³⁺ in the CaNbGa garnet – CNGG – single crystal

et al. 2020

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New garnet compounds with trivalent rare-earth ions on both dodecahedral and octahedral sites

Cited by 44 publications

References 5 publications

Incorporation of Trivalent Cations in Synthetic Garnets A₃B₅O₁₂ (A = Y, Lu−La, B = Al, Fe, Ga)

Incorporation of Trivalent Cations in Synthetic Garnets A₃B₅O₁₂ (A = Y, Lu−La, B = Al, Fe, Ga)

Quality evaluation of crystals of mixed oxides of elements of the third group of the periodic system

A probe of the radiation field magnetic component based on octahedral Yb³⁺ in the CaNbGa garnet – CNGG – single crystal

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New garnet compounds with trivalent rare-earth ions on both dodecahedral and octahedral sites

Cited by 44 publications

References 5 publications

Incorporation of Trivalent Cations in Synthetic Garnets A3B5O12 (A = Y, Lu−La, B = Al, Fe, Ga)

Incorporation of Trivalent Cations in Synthetic Garnets A3B5O12 (A = Y, Lu−La, B = Al, Fe, Ga)

Quality evaluation of crystals of mixed oxides of elements of the third group of the periodic system

A probe of the radiation field magnetic component based on octahedral Yb3+ in the CaNbGa garnet – CNGG – single crystal

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Incorporation of Trivalent Cations in Synthetic Garnets A₃B₅O₁₂ (A = Y, Lu−La, B = Al, Fe, Ga)

Incorporation of Trivalent Cations in Synthetic Garnets A₃B₅O₁₂ (A = Y, Lu−La, B = Al, Fe, Ga)

A probe of the radiation field magnetic component based on octahedral Yb³⁺ in the CaNbGa garnet – CNGG – single crystal