Hydrothermal growth of LiLuF4 crystals and new lithium lutetium fluorides LiKLuF5 and LiNaLu2F8

Comer, Sara; McMillen, Colin D.; Kolis, Joseph W.

doi:10.1016/j.solidstatesciences.2012.11.019

Cited by 7 publications

(7 citation statements)

References 22 publications

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“…The layers are isolated in KGd(CO 3 )F 2 , while they are connected along [001] by apical fluorine atoms in BaEr 2 F 8 . A similar connection of LnF 8 polyhedra occurs in LiNaY 2 F 8 and LiNaYb 2 F 8 …”

Section: Crystal Structures and Propertiessupporting

confidence: 60%

“…A similar connection of LnF 8 polyhedra occurs in LiNaY 2 F 8 473 and LiNaYb 2 F 8 . 474 The ALn 3 F 10 phases, as compared to their related derivatives in Table 5, exhibit interesting optical properties, especially for laser amplification. The high-pressure variety of KY 3 F 10 475 (Figure 46a), together with β-YOF and derived phases, adopts the fluorite-type structure.…”

Section: D Fluorides and Oxide-fluoridesmentioning

confidence: 99%

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Crystal Chemistry and Selected Physical Properties of Inorganic Fluorides and Oxide-Fluorides

2014

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The stereochemistry of fluorides will be discussed in terms of dimensionality. This dimensionality, from 0D to 3D, is related to the connectivity of the building MX n m− units containing the metal M (M = aluminum, transition metal, or rare earth elements, X = F, O, N, S). These building units share eventually one, two, or three fluorine or oxygen atoms (corner, edge, or face of the MX n m− polyhedra) to form limited polyanions, infinite chains or layers, or a 3D network. Consequently, the structures will be presented according to their dimensionality, to their structural family, and to the nature of the building units. Imaginative associations of the building units will be eventually used to homogenize the structural descriptions. At the end of each section, some outstanding physical properties will be briefly presented and related to the structural data: ionic conductivity, superconductivity, ferroelasticity, and magnetism.The reader should be aware that the IUPAC nomenclature suggests "fluorido" instead of "fluoro" that is used all along this Review. All crystal structure projections were realized with Diamond software (Diamond -Crystal and Molecular Structure

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Section: Crystal Structures and Propertiessupporting

confidence: 60%

Section: D Fluorides and Oxide-fluoridesmentioning

confidence: 99%

Crystal Chemistry and Selected Physical Properties of Inorganic Fluorides and Oxide-Fluorides

2014

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“…In 1983, Kawamoto et al synthesized several phases of AZrF 6 (A = Sr, Ba, and Pb) using stoichiometric melts, including the lowtemperature phases of α-SrZrF 6 (7), PbZrF 6 (8), and α-BaZrF 6 (14), by melting stoichiometric ratios of starting reagents at 850 °C followed by slow cooling. The hightemperature phases of β-SrZrF 6 and β-BaZrF 6 (9) were obtained by crystallizing the stoichiometric melts a few degrees above their melting points followed by quenching using liquid nitrogen. However, they were unable to determine the crystal structure of β-SrZrF 6 , and, therefore, it is not included in Table 2.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Comparative Study on Crystal Structures and Synthetic Techniques of Ternary Hafnium/Zirconium Fluorides

et al. 2023

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Mild hydrothermal synthesis was employed to grow high-quality single crystals of ternary fluoridohafnates at low temperatures. The series of new materials was characterized using single-crystal X-ray diffraction, and the crystal structures of AHfF6 (A = Mg and Sr), A2HfF8 (A = Ba and Pb), Ca5Hf3F22, and Cd2HfF8(H2O)6 are discussed herein. Although some material compositions have similar stoichiometries, all of the compositions adopt different structural motifs. A comparison of the crystal structures and synthesis techniques of ternary fluoridohafnates and ternary fluoridozirconates is also reported, and the impact of the subtle changes of synthesis conditions on overall structures is discussed.

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“…These differences are often significant in optical behavior because of different site symmetries, inversion centers and other important factors. Of these stoichiometries, some aspects of the A 2 REF 5 class formed hydrothermally have been recently discussed (Comer et al, 2013). The present study seeks to add to the understanding of the single-crystal structures of the ARE 2 F 7 and ARE 3 F 10 members of this broad class of compounds, and extend the scope of alkali metal rare earth fluorides that are structurally characterized.…”

Section: Introductionmentioning

confidence: 96%

“…Within the class of ternary alkali rare earth fluoride compositions, a wide range of different structural types have been reported from singlecrystal studies. These typically vary based on the sizes of the alkali and rare earth metals, and often occur as the result of polymorphism generated by variations in synthetic method, growth temperature, pressure or other factors (Comer et al, 2013;Grzechnik et al, 2002Grzechnik et al, , 2015Lage et al, 2005;Xue et al, 2013;Thoma, 1962). In many cases multiple phases are formed depending on the size of the alkali, size of rare earth, synthetic method and even pressure.…”

Section: Introductionmentioning

confidence: 99%

Crystal chemistry of hydrothermally grown ternary alkali rare earth fluorides

McMillen

Comer

Fulle

et al. 2015

Acta Crystallogr Sect B

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The structural variations of several alkali metal rare earth fluoride single crystals are summarized. Two different stoichiometric formulations are considered, namely those of ARE2F7 and ARE3F10 (A = K, Rb, Cs; RE = Y, La-Lu), over a wide range of ionic radii of both the alkali and rare earth (RE) ions. Previously reported and several new single-crystal structures are considered. The new single crystals are grown using hydrothermal methods and the structures are compared with literature reports of structures grown from both melts and hydrothermal fluids. The data reported here are combined with the literature data to gain a greater understanding of structural subtleties surrounding these systems. The work underscores the importance of the size of the cations to the observed structure type and also introduces synthetic technique as a contributor to the same. New insights based on single-crystal structure analysis in the work introduce a new disordered structure type in the case of ARE2F7, and examine the trends and boundaries of the ARE3F10 stoichiometry. Such fundamental structural information is useful in understanding the potential applications of these compounds as optical materials.

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Hydrothermal growth of LiLuF4 crystals and new lithium lutetium fluorides LiKLuF5 and LiNaLu2F8

Cited by 7 publications

References 22 publications

Crystal Chemistry and Selected Physical Properties of Inorganic Fluorides and Oxide-Fluorides

Crystal Chemistry and Selected Physical Properties of Inorganic Fluorides and Oxide-Fluorides

Comparative Study on Crystal Structures and Synthetic Techniques of Ternary Hafnium/Zirconium Fluorides

Crystal chemistry of hydrothermally grown ternary alkali rare earth fluorides

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