Magnetism and optical properties of Yb3Al5O12 hosted Er3+ – experiment and theory

Sedmidubský, David; Jakeš, V.; Rubešová, K.; Nekvindová, Pavla; Hlásek, Tomáš; Yatskiv, Roman; Novák, P.

doi:10.1016/j.jallcom.2019.151903

Cited by 7 publications

(2 citation statements)

References 32 publications

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“…Among these, one of the most used ones is yttrium aluminum garnet (YAG), Y 3 Al 2 (AlO 4 ) 3 , used as a synthetic simulant to diamond due to its high refractive index (> 1.8) 4 . Doped YAGs with other rare-earth elements have found numerous applications as lasing media in modern medical laser devices 5 or in tunable optical devices [6][7][8][9] .…”

Section: Introductionmentioning

confidence: 99%

Machine learning guided high-throughput search of non-oxide garnets

et al. 2023

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Garnets have found important applications in modern technologies including magnetorestriction, spintronics, lithium batteries, etc. The overwhelming majority of experimentally known garnets are oxides, while explorations (experimental or theoretical) for the rest of the chemical space have been limited in scope. A key issue is that the garnet structure has a large primitive unit cell, requiring a substantial amount of computational resources. To perform a comprehensive search of the complete chemical space for new garnets, we combine recent progress in graph neural networks with high-throughput calculations. We apply the machine learning model to identify the potentially (meta-)stable garnet systems before performing systematic density-functional calculations to validate the predictions. We discover more than 600 ternary garnets with distances to the convex hull below 100 meV ⋅ atom−1. This includes sulfide, nitride, and halide garnets. We analyze their electronic structure and discuss the connection between the value of the electronic band gap and charge balance.

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Section: Introductionmentioning

confidence: 99%

Machine learning guided high-throughput search of non-oxide garnets

et al. 2023

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“…Yttrium and lanthanide aluminium garnets (Y 3 Al 5 O 12 , YAG and Ln 3 Al 5 O 12 , LnAG, Lnlanthanide element from Eu to Lu) show great chemical stability, high temperature creep resistance and extremely important luminescent properties [1][2][3][4][5][6]. However, during the preparation of YAG very often the formation of secondary phases like perovskite (YAlO 3 , YAP) and hexagonal aluminate (YAlO 3 , YAH) have been observed [7,8].…”

Section: Introductionmentioning

confidence: 99%

Investigation of lanthanum substitution effects in yttrium aluminium garnet: importance of solid state NMR and EPR methods

Laurikenas

Sakalauskas

Maršalka

et al. 2020

J Sol-Gel Sci Technol

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In this study yttrium aluminium garnet (YAG) specimens in which yttrium was partially substituted by lanthanum Y3-xLaxAl5O12 (YLaAG) were prepared by an aqueous sol-gel method. The resulting sol was concentrated by slow solvent evaporation at 65 oC. The obtained gels were dried in an oven at 120 oC for 24 h. The obtained precursor gel powders were calcined at 800 oC and 1000 oC in air. YLaAG samples were analyzed by X-ray diffraction (XRD), solid state nuclear magnetic resonance (NMR), scanning electron microscopy (SEM) and electron paramagnetic resonance (EPR) methods. Luminescence measurements of YLaAG samples were also recorded. The XRD analysis results showed that only low substitution of yttrium by lanthanum is possible in Y3-xLaxAl5O12 without destroying garnet crystal structure. It was also demonstrated in this study, that solid state NMR and EPR methods are indispensable tools for the explanation of processes and properties observed in the newly synthesized Y3-xLaxAl5O12 compounds.

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