Implantation Doping and Stimulated Emission of Er3+ in LinbO3:Ti Optical Waveguides

1990 ◽  
Vol 201 ◽  
Author(s):  
Ch. Buchal ◽  
R. Brinkmann ◽  
W. Sohler ◽  
H. Suche
Keyword(s):  
Activation Energy ◽  
Rare Earth ◽  
Single Crystals ◽  
Optical Waveguides ◽  
Stimulated Emission ◽  
Optical Fluorescence ◽  
And Diffusion ◽  
The Rare Earth

AbstractWe have implanted Nd and Er ions into x- and z-cut LiNbC3 single crystals and investigated the recrystallization of the host and the rare earth solubility and diffusion. The diffusion is substitutional, fastest parallel to c-axis and characterized by an activation energy of 3.6 eV. Optical fluorescence experiments of Er3+ in a waveguide configuration show stimulated emission and amplification at 1.53, 1.55 and 1.56 μm wavelength.

Ion implantation, diffusion, and solubility of Nd and Er in LiNbO3

1991 ◽  
Vol 6 (1) ◽  
pp. 134-137 ◽  
Author(s):  
Ch. Buchal ◽  
S. Mohr
Keyword(s):  
Activation Energy ◽  
Rare Earth ◽  
Ion Implantation ◽  
Single Crystals ◽  
Rutherford Backscattering Spectrometry ◽  
Rutherford Backscattering ◽  
Temperature Dependent ◽  
Diffusion Constants ◽  
The Rare Earth

We have implanted Nd and Er ions into x- and z-cut LiNbO3 single crystals. Rutherford backscattering spectrometry and channeling shows the recrystallization of the host during annealing and the rare earth diffusion. Nd and Er have different solubilities and different diffusion constants in LiNbO3. The solubility is strongly temperature dependent. The diffusion is substitutional, fastest parallel to c-axis of the LiNbO3 crystal and characterized by an activation energy of approximately 3.6 eV.

Thermal Evolution and Electrical Properties of Rare-Earth Oxide Doped Zirconia

1988 ◽  
Vol 121 ◽  
Author(s):  
B. S. Chiou ◽  
M. Y. Lee ◽  
J. G. Duh
Keyword(s):  
Activation Energy ◽  
Rare Earth ◽  
Ionic Radius ◽  
Thermal Evolution ◽  
Rare Earth Oxide ◽  
Zirconia Ceramics ◽  
Wet Chemical ◽  
Ir Analysis ◽  
Lower Temperature ◽  
The Rare Earth

ABSTRACTSynthesized zirconia ceramics are prepared through the coprecipita-tion process. Application of the wet chemical approach is aimed at the achievement of highly sintered ceramics at lower temperature. The thermal evolution of the synthesized CeO2-ZrO2 powder is investigated with the aid of DTA and TGA measurement. The exothermic peaks on the DTA thermogram are futher identified by the IR analysis. The effect of CeO on the occurrence of the peaks is probed. For other rare-earth oxiae doped ceramics, such as Nd2O3. and Dy2O3. containing zirconia, the bulk and grain boundary resistances are evaluated by the impedance spectroscopy. The dependence of the associated activation energy in the rare-earth oxide doped zirconia is discussed with respect to the variation of the ionic radius of the rare earth constituent.

Photoluminescence Spectral Lines Identification in Ho3+-, Er3+-, and Tm3+-doped MgxZn1–xSe Single Crystals

1999 ◽  
Vol 14 (4) ◽  
pp. 1227-1234 ◽  
Author(s):  
Young-Geun Kim ◽  
Ho-Jun Song ◽  
Seok-Kyun Oh ◽  
Wha-Tek Kim ◽  
Kwang-Ho Park ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Single Crystals ◽  
Energy Levels ◽  
Wurtzite Structure ◽  
Spectral Lines ◽  
Photoluminescence Spectra ◽  
Closed Tube ◽  
Sublimation Method ◽  
The Rare Earth

MgxZn1-xSi: Ho3+, MgxZn1-xSe: Er3+, and MgxZn1-xSe: Tm3+ single crystals were grown by the closed-tube sublimation method. The single crystals crystallized into a zincblende structure at the composition x = 0.11 and a wurtzite structure at the composition x = 0.25, 0.32, and 0.41. The trivalent ions (Ho3+, Er3+, and Tm3+) of the rare-earth elements Ho, Er, and Tm site in Td and C3v symmetries in the single crystals with zincblende and wurtzite structures, respectively. Sharp emission peaks appeared in the photoluminescence spectra of the single crystals. These emission peaks are identified to originate from the radiation recombination between the energy levels of the trivalent ions sited in Td and C3v symmetries.

Determination of the distribution coefficients of the rare earth ions Er3+ and Nd3+ in yttria-stabilized c-ZrO2 single crystals

1994 ◽  
Vol 209 (4) ◽  
Author(s):  
H. Römer ◽  
K.-D. Luther ◽  
W. Assmus
Keyword(s):  
Rare Earth ◽  
Single Crystals ◽  
Zirconium Dioxide ◽  
Room Temperature ◽  
Distribution Coefficients ◽  
Rare Earth Ions ◽  
Cubic Phase ◽  
The Rare Earth

AbstractWe describe investigations of growth of cubic zirconium dioxide single crystals doped with rare-earth ions. The cubic phase is stabilized down to room temperature by adding 12 mole% Y

Rhodium-rich silicides RERh6Si4 (RE=La, Nd, Tb, Dy, Er, Yb)

2017 ◽  
Vol 72 (11) ◽  
pp. 775-780
Author(s):  
Daniel Voßwinkel ◽  
Rainer Pöttgen
Keyword(s):  
Rare Earth ◽  
Single Crystal ◽  
Single Crystals ◽  
Three Dimensional ◽  
X Ray ◽  
Arc Melting ◽  
Covalently Bonded ◽  
Reactive Flux ◽  
The Rare Earth

AbstractPolycrystalline RERh6Si4 (RE=La, Nd, Tb, Dy, Er, Yb) samples can be synthesized by arc-melting of the elements. Single crystals of LaRh6Si4, NdRh6Si4 and YbRh6Si4 were synthesized from the elements in bismuth fluxes (non-reactive flux medium). The structures were refined on the basis of single-crystal X-ray diffractometer data: LiCo6P4 type, P6̅m2, a=700.56(3), c=380.55(1) pm, wR2=0.0257, 317 F2 values, 19 variables for LaRh6Si4, a=698.4(5), c=377.7(2) pm, wR2=0.0578, 219 F2 values, 19 variables for NdRh6Si4 and a=696.00(3), c=371.97(1) pm, wR2=0.0440, 309 F2 values, 19 variables for YbRh6Si4. The rhodium and silicon atoms build up three-dimensional, covalently bonded [Rh6Si4]δ− polyanionic networks with Rh–Si distances ranging from 239 to 249 pm. The rare earth atoms fill larger cavities within channels of these networks and they are coordinated by six silicon and twelve rhodium atoms in the form of hexa-capped hexagonal prisms.

scholarly journals Zur Kristallchemie von CuDyMo2O8 und CuYbMo2O8

1996 ◽  
Vol 51 (2) ◽  
pp. 240-244
Author(s):  
Hk. Müller-Buschbaum ◽  
St. Gallinat
Keyword(s):  
Crystal Structure ◽  
Rare Earth ◽  
Single Crystals ◽  
Rare Earth Ions ◽  
Orthorhombic Symmetry ◽  
Space Group ◽  
Group D ◽  
Symmetry Space ◽  
Symmetry Space Group ◽  
The Rare Earth

Abstract Single crystals of (I) CuDyMo2O8 and (II) CuYbMo2O8 have been prepared by crystalli­sation from melts. Both com pounds crystallize with orthorhombic symmetry, space group D152h-Pbca with (I): a = 10.195(1), b = 9.721(2), c = 14.563(3); (II): a = 10.094(6), b = 9.628(9), c = 14.467(8) Å, Z = 8. The crystal structure is characterized by a triangular CuO3-polygon, a square antiprismatic coordination around the Rare Earth ions and the typical Mo O4 tetra­ hedra.

Organic Lanthanide Crystals for Nano-Optics Studies

MRS Advances ◽  
2016 ◽  
Vol 1 (23) ◽  
pp. 1715-1719
Author(s):  
Rabia Hussain ◽  
Alexis Bullock ◽  
Danielle Gable ◽  
Jade Griffin ◽  
Natalia Noginova
Keyword(s):  
Thin Film ◽  
Rare Earth ◽  
Single Crystals ◽  
Optical Quality ◽  
Rare Earth Ion ◽  
Thin Film Fabrication ◽  
Film Fabrication ◽  
Good Optical Quality ◽  
The Rare Earth

ABSTRACTSingle crystals of Ln(NO3)3·Bpy2 where Ln = Eu, Gd, Nd, Tm, Er, La and Yb were fabricated and characterized. Materials have good optical quality, can be excited at UV or the rare earth ion transitions, demonstrate efficient luminescence and are suitable for thin film fabrication. Fabrication approaches and possible applications are discussed.

Synthese und Kristallstruktur von Pb2LnAl3O8 (Ln = Eu, Gd) / Synthesis and Crystal Structure of Pb2LnAl3O8 (Ln = Eu, Gd)

1996 ◽  
Vol 51 (6) ◽  
pp. 883-887 ◽  
Author(s):  
J.-P. Werner ◽  
Hk. Müller-Buschbaum
Keyword(s):  
Crystal Structure ◽  
Rare Earth ◽  
Single Crystals ◽  
Rare Earth Ions ◽  
Synthesis And Crystal Structure ◽  
Cubic Symmetry ◽  
Space Group ◽  
Symmetry Space ◽  
Symmetry Space Group ◽  
The Rare Earth

Abstract Single Crystals of Pb2LnAl3O8 (Ln = Eu, Gd) have been prepared by flux techniques. The compounds crystallize with cubic symmetry, space group Oh-Pn3̅m, a(Eu) = 9.4578(5), a(Gd) = 9.4448(7) Å, Z = 4. The crystal structure is characterized by heterocubane units of the type Pb4O4 and hexagonal bipyramids of oxygen around the rare earth ions. These components form a network made of macro polyhedra of the type Pb4O4- LnO6- Pb4O4

Solid State Syntheses and Structure of LaPdCd2 and PrNi0.951(4)Cd2

2007 ◽  
Vol 62 (4) ◽  
pp. 610-612 ◽  
Author(s):  
Ahmet Doğan ◽  
Ute Ch. Rodewald ◽  
Rainer Pöttgen
Keyword(s):  
Rare Earth ◽  
Solid State ◽  
Single Crystals ◽  
Induction Furnace ◽  
Three Dimensional ◽  
X Ray Diffraction ◽  
X Ray ◽  
Cadmium Compounds ◽  
Hexagonal Diamond ◽  
The Rare Earth

The intermetallic cadmium compounds LaPdCd2 and PrNi0.951(4)Cd2 were synthesized from the elements in sealed tantalum tubes in an induction furnace. Both phases were investigated by X-ray diffraction on powders and single crystals: MgCuAl2-type, Cmcm, Z = 4, a = 431.9(1), b = 1015.7(4), c = 835.7(2) pm, wR2 = 0.0436, 326 F2 values, 16 variables for LaPdCd2 and a = 420.26(8), b = 981.0(2), c = 815.3(1) pm, wR2 = 0.0404, 604 F2 values, 17 variables for PrNi0.951(4)Cd2. A small nickel deficit was observed for the PrNi0.951(4)Cd2 crystal. The cadmium atoms build up orthorhombically distorted three-dimensional networks (Cd-Cd distances: 302 - 334 pm) that resemble the structure of hexagonal diamond, lonsdaleite. Together with the palladium (nickel) atoms, [PdCd2] and [Ni0.951(4)Cd2] networks are formed which leave distorted hexagonal channels for the rare earth atoms.

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