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Rare Earth Hosts

Why the US buys all its rare earth metals from China

Rare earth minerals, though not actually rare, have unique chemical properties that make them essential for wide-ranging technologies, including smartphones, hybrid cars and high-tech weapons. Two ...

Ucore Hosts 2011 Alaska Rare Earth Conference

The 2011 Alaska Rare Earth Conference is the latest in a series of Alaskan events to be organized and hosted by Ucore Rare Metals Inc. Prior events have included the hosting of participatory ...

Phosphors and Phosphor Hosts - Sigma-Aldrich

Phosphors and Phosphor Hosts. Nanoparticles can exhibit enhanced properties including luminescence and phosphorescence compared to bulk materials making them ideal for solid state lighting and optical labeling. Nanomaterials have been studied both as nanophosphor dopants and host materials. ... Rare earth doped upconversion nanoparticles ...

Rare earth elements facts | Natural Resources Canada

Canada hosts some of the most advanced REEs exploration projects in the world. ... Uses. Rare earth elements (REEs) are used in a variety of industrial applications, including electronics, clean energy, aerospace, automotive and defence. Global demand for REEs …

Upconversion-pumped luminescence efficiency of rare-earth ...

Upconversion-pumped luminescence efficiency of rare-earth-doped hosts sensitized with trivalent ytterbium Ralph H. Page, Kathleen I. Schaffers, Phillip A. Waide, John B. Tassano, Stephen A. Payne, William F. Krupke, and William K. Bischel

Muon hyperfine fields in rare earth hosts

hosts, in particular in the rare earths Gd and Dy. In Gd the total hyperfine field B. = Bint + BL is + 1.1 kG [1], where BL is the Lorentz field and Bint = Bhf + Bdip is the internal field, the sum of

Rare-earth mineral - Wikipedia

A rare-earth mineral contains one or more rare-earth elements as major metal constituents. Rare-earth minerals are usually found in association with alkaline to peralkaline igneous complexes, in pegmatites associated with alkaline magmas and in or associated with carbonatite intrusives. Perovskite mineral phases are common hosts to rare-earth elements within the alkaline complexes.

What Makes Earth Special Compared to Other Planets

The fact that Earth hosts not just life, but intelligent life, makes it doubly unique. And the planet's intelligent life (humanity) has even developed rockets that enable travel beyond the planet ...

RARE-EARTH ABUNDANCESIN HOST GRANITIC ROCKS AND …

RARE-EARTH ABUNDANCES GYPSUM ASSOCIATED WITH Ansrnacr Data axe presented on the concentration of the rare-earth elements (REE) in the granitic host-rock and associated fracture-filling gypsum from a borehole located 30 km northwest of Atikokan, Ontario, within the Archean Eye-

OUR COMPANY - Lynas

Mt Weld, Western Australia. The Mt Weld Central Lanthanide Deposit (CLD) is one of the highest grade rare earth deposits in the world. Mt Weld also hosts the undeveloped Duncan (rare earth), Crown (niobium, tantalum, titanium, rare earths, zirconium) and Swan (phosphate) deposits.

Rare earth fluorescence in some LnOCl type hosts ...

LaOCl, LuOCl and ScOCl represent three different structures with the Ln ion coordination changing from 9 to 7 and 6. The rare earth ions Sm +3, Eu +3, Tb +3, Dy +3 and Tm +3 can be introduced into all three of these hosts and the luminescence is discussed as a function of the local crystal symmetry.

Use of thulium-sensitized rare earth-doped low phonon ...

Crystalline hosts with low phonon energies enable novel energy transfer processes when doped with rare earth ions. Two applications of energy transfer for rare earth ions in thulium-sensitized low phonon energy crystals that

Rare earth elements - NSW Resources and Energy

host elevated concentrations of rare earth elements. The New England Orogen hosts highly fractionated, relatively oxidised and metaluminous I-type granitoids of Permian to Early

The Role of Rare Earth Dopants in Semiconducting Host ...

ii The Role of Rare Earth Dopants in Semiconducting Host System for Spin Electronic Devices Juan A. Colón Santana, Ph.D. University of Nebraska, 2012

Abstract: (Invited) Excitation Mechanism of Rare Earth ...

Rare earth doped semiconductors have received much attention in the last decades because of potential applications in photonics and illumination. Because silicon is the most widely employed material in the semiconductor industry, much of this effort is devoted to obtain …

New rare-earth hosts: OH in laser glasses - ResearchGate

Furnace-melt, multi-component glasses are used to produce dense gain media for waveguide and micro-chip lasers. The compositional flexibility is often accompanied by elevated water contents, which ...

Rare Earth Interactive Hosts International Delegation of ...

Buffalo, New York, July 7, 2005 – Rare Earth Interactive Design, Inc., today hosted an international delegation at its Buffalo, New York Headquarters. The members of the delegation, representing Kenya, Tunisia, Eritrea, Cote D'Ivoire (Ivory Coast), Palestine and the Philippines, are participants in the Buffalo Niagara World Connect International Visitor Leadership Program, sponsored by the ...

Use of thulium-sensitized rare earth-doped low phonon ...

Crystalline hosts with low phonon energies enable novel energy transfer processes when doped with rare earth ions. Two applications of energy transfer for rare earth ions in thulium-sensitized low phonon energy crystals that result in infrared luminescence are discussed.

Phosphor - Wikipedia

The host materials are typically oxides, nitrides and oxynitrides, sulfides, selenides, halides or silicates of zinc, cadmium, manganese, aluminium, silicon, or various rare-earth metals. The activators prolong the emission time (afterglow).

Rare earth doped nanoparticles in organic and inorganic ...

The active optical properties of the rare earth ions erbium and neodymium are used to amplify the optical signals used in te lecommunication systems around 1550nm (1) and 1330nm, respectively.

Rare-earth element - Wikipedia

A rare-earth element (REE) or rare-earth metal (REM), as defined by IUPAC, is one of a set of seventeen chemical elements in the periodic table, specifically the fifteen lanthanides, as well as scandium and yttrium.

Are rare earth phosphates suitable as hosts for ...

Rare earth orthophosphates can be considered as excellent hosts for Ln 3+ ions, especially for above mentioned Ho 3+, Er 3+ and Tm 3+, but they can be also doped with Ce 3+, Tb 3+ or Eu 3+ ions,, . These materials have many excellent properties, such as high chemical, thermal and photostability, high quantum yields of their emission, high ...

Luminescent Materials

Traditional oxide phosphors typically consist of an inert host lattice that is doped with activator ions, usually transition (3d) or rare earth (4f) metals. The host lattice is transparent to the incident radiation and the activator is excited to emit photons.

RARE-EARTH ELEMENT BEHAVIOR IN PHOSPHATES AND …

rare earth element patterns and distributions Four distinct shale-normalized REE patterns in the phos- phates and their host shales have been documented (Kidder and

Ucore Hosts 2011 Alaska Rare Earth Conference | Ucore Rare ...

The 2011 Alaska Rare Earth Conference is the latest in a series of Alaskan events to be organized and hosted by Ucore Rare Metals Inc. Prior events have included the hosting of participatory meetings and site visits with the US Geological Survey, the American and international investment banking and industrial development sectors, and the ...

Upconversion-pumped luminescence efficiency of rare-earth ...

Upconversion-pumped luminescence efficiency of rare-earth-doped hosts sensitized with trivalent ytterbium Ralph H. Page, Kathleen I. Schaffers, Phillip S. Waide, John B. Tassano, Stephan A. Payne, and William F. Krupke

Ames hosts 28th Rare Earth Research Conference | Ames ...

The 28th Rare Earth Research Conference was held in Ames June 18-22 on the ISU campus. More than 200 researchers from around the globe attended the five-day conference. It marked the first time since 1965 that Ames Laboratory had hosted the event.

Study of the electric quadrupole interaction at Ta ...

The time-differential perturbed-angular-correlation (TDPAC) technique has been used to study the temperature dependences of the electric field gradient (EFG) at /sup 181/Ta impurities in the heavy-rare-earth (RE) metals Gd, Dy, Ho, and Er.