• Keine Ergebnisse gefunden

Rare Earth Site Preference in the Doped Laser Host Material Sc2

N/A
N/A
Info
Herunterladen
Protected

Academic year: 2022

Aktie "Rare Earth Site Preference in the Doped Laser Host Material Sc2"

Copied!
1
0
0

Wird geladen.... (Jetzt Volltext ansehen)

Jetzt herunterladen ( 1 Seite )

Volltext

(1)

Rare Earth Site Preference in the Doped Laser Host Material Sc

2

SiO

5

. A Single-Crystal X-Ray Study

Ute Ch. Rodewalda, Lihe Zhengb, Birgit Heyinga, Xiaodong Xub, Liangbi Sub, Jun Xub, and Rainer P¨ottgena

aInstitut f¨ur Anorganische und Analytische Chemie, Universit¨at M¨unster, Corrensstraße 30, 48149 M¨unster, Germany

bShanghai Institute ofCeramics, Chinese Academy ofSciences, Shanghai 200050, P. R. China Reprint requests to R. P¨ottgen. E-mail: pottgen@uni-muenster.de

Z. Naturforsch.2012,67b,113 – 117; received January 17, 2012

Single crystals ofthe laser host material Sc2SiO5 as well as thulium- (4 at.-%) and ytterbium- (5 at.-%) doped samples were prepared by the Czochralski technique. The structures ofSc2SiO5, Tm3+:Sc2SiO5, and Yb3+:Sc2SiO5 were refined on the basis ofhigh-quality single-crystal X-ray diffraction data: monoclinic Y2SiO5type, space groupC2/c. The X-ray data unambiguously show that the larger rare earth cations exclusively occupy the 8fsite with oxygen coordination number 7.

Key words:Crystal Structure, Scandium Silicate, Rare Earth Doping, Laser Material

Referenzen

Jetzt herunterladen ( PDF - 1 Seite - 27.44 KB )

ÄHNLICHE DOKUMENTE

rare-earth ions activated ZrO

At 405 nm excitation wavelength corres- ponding to 4 K 11/2 term absorption from the 6 H 5/2 ground state the samples emitted well resolved Stark split Sm 3+ ion’s

High-pressure Syntheses and Characterization of the Rare Earth Borates RE5

A suit- able basis set for the rare earth atom was identified based on geometry optimizations and calculations of harmonic vibrational frequencies of the high-pressure orthorhombic

High-pressure Synthesis and Characterization of the Rare-earth Fluoride Borate LaB2

Because of the rela- tively mild pressure conditions, all boron atoms of the compound LaB 2 O 4 F are coordinated by three oxygen atoms, forming trigonal-planar [BO 3 ] 3−

of the Rare-earth Borate La

The assignments of the vibrational modes are based on a compari- son with the experimental data of borate glasses and crystals, containing trigonal [BO 3 ] 3− and tetrahedral [BO 4 ]

Rare Earth-rich Cadmium Compounds RE23

Central structural motifs of the RE 23 T 7 Cd 4 compounds are transition metal-centered trigonal prisms of rare earth atoms and Cd 4 tetrahedra. The RE 6 T prisms are condensed

Platinum-Germanium Ordering in the Germanides REPtGe with the Heavy Rare Earth Elements

The equiatomic germanides RE PtGe with the heavy rare earth elements ( RE ) have been reinvesti- gated with respect to platinum-germanium ordering.. The compounds were prepared

Heavy Rare Earth Elements

Exemplarily, the single crystal data of ErPtGe and LuPtGe and those recently reported for YbPtGe [25] clearly manifest the TiNiSi- type structure for the REPtGe germanides with

Ternary Rare Earth Metal Silicides RE

The COHP analysis (Crystal Orbital Hamilton Population) of the Si–Si bonds shows a significant occupation of Si–Si antibonding orbitals, which is partially compen- sated by a