NaSrR(BO) (R = Ho-Lu, Y, Sc) compounds were obtained for the first time. Their structures exhibit disordered positions of Sr and Na atoms while RO polyhedra are connected through the BO groups. Large distances between R atoms and high transparency in the range of 250-900 nm make them promising for phosphor applications. A pathway to obtain single crystals was shown by growing NaSrY(BO) and NaSrYb(BO) by the top seeded solution growth method with NaO-BO-NaF flux.
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- The study presents a Kerr-lens mode-locked Tm,Ho-codoped calcium aluminate laser that is pumped in-band using a 1678 nm Raman fiber laser.
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Lanthanide Contraction in F ( = Ce-Lu) and Its Chemical and Structural Consequences: Part 2: Specialized Empirical System of ( = Y, La, and 14 ) and F Ionic Radii for F Series.
Int J Mol Sci
December 2023
Shubnikov Institute of Crystallography, Federal Scientific Research Centre "Crystallography and Photonics", Russian Academy of Sciences, Leninskiy Prospekt 59, 119333 Moscow, Russia.
A () () for = Y, La, , and F ( rare earth elements ()) was derived from the dependence of () on the () of (). LC decreased the radius of the cation with increasing Z. The structures of -F (LaF-NdF, "-SmF") of the LaF type, 11 -F ( = Sm-Lu), and -YF of the β-YF type were studied.
View Article and Find Full Text PDFLanthanide Contraction in F ( = Ce-Lu) and Its Chemical and Structural Consequences: Part 1: Location of YF in the F Series According to Its Chemical and Structural Characteristics.
Int J Mol Sci
November 2023
Shubnikov Institute of Crystallography, Federal Scientific Research Centre "Crystallography and Photonics", Russian Academy of Sciences, Leninskiy Prospekt 59, 119333 Moscow, Russia.
A of 14 () from Ce to Lu consists of the interaction of nucleus with -electrons. (REEs-) include Sc, Y, La, and 14 . They are located in 4-6th periods of the subgroup of group III.
View Article and Find Full Text PDFOxidation Kinetics of Nanocrystalline Hexagonal RMnTiO (R = Ho, Dy).
ACS Appl Mater Interfaces
September 2023
Department of Materials Science and Engineering, NTNU Norwegian University of Science and Technology, NO-7491 Trondheim, Norway.
Hexagonal manganites, RMnO (R = Sc, Y, Ho-Lu), are potential oxygen storage materials for air separation due to their reversible oxygen storage and release properties. Their outstanding ability to absorb and release oxygen at relatively low temperatures of 250-400 °C holds promise of saving energy compared to current industrial methods. Unfortunately, the low temperature of operation also implies slow kinetics of oxygen exchange in these materials, which would make them inefficient in applications such as chemical looping air separation.
View Article and Find Full Text PDFLow-Temperature Synthesis of Magnetic Pyrochlores (RMnO, R = Y, Ho-Lu) at Ambient Pressure and Potential for High-Entropy Oxide Synthesis.
Inorg Chem
July 2023
Department of Chemistry, Georgetown University, 37th and O Streets NW, Washington, D.C. 20057, United States.
Rare-earth manganese pyrochlores (RMnO) are frustrated magnetic materials, which previously have only been accessed using expensive high-pressure and high-temperature synthesis. In the present work, we demonstrate a convenient synthetic approach to synthesize RMnO pyrochlores at ambient pressure. A series of pyrochlores (R = Y, Ho-Lu) were prepared by a simple and cost-effective molten salt method using NaCl and KCl as the flux.
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