rare earth composition

rare earth composition

Rare Earth element composition of precipitation ...

1993-11-20  We report the rare earth element (REE) composition of aerosols and precipitation (dissolved and particle phases) from Bermuda, Lewes (Delaware), and Woods Hole (Massachusetts). There is large-scale fractionation of REEs between the continents, atmosphere, and the oceans.

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rare-earth element Uses, Properties, Facts Britannica

2021-8-31  Rare-earth element, any member of the group of chemical elements consisting of three elements in Group 3 (scandium [Sc], yttrium [Y], and lanthanum [La]) and the first extended row of elements below the main body of the periodic table

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Rare earth element composition of Paleogene vertebrate ...

2009-4-1  Rare earth element contents of jurassic fish and reptile teeth and their potential relation to seawater composition (Anglo-Paris Basin, France and England) Chem. Geol. , 186 ( 2002 ) , pp. 1 - 16 Article Download PDF View Record in Scopus Google Scholar

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Multi-element and rare earth element composition of ...

2001-2-1  Lichen (n=12) and moss (n=6) species from a remote region of northern Canada have remarkably similar multi-element patterns suggesting they are non-specific accumulators of metals under existing conditions.Within individual species the concentration of many metals analyzed range over an order of magnitude. Many elements have a positive correlation with multi-element (n=48) and REE (rare earth ...

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Rare-Earth Elements - USGS

2017-11-27  Rare-Earth Elements Chapter O of Critical Mineral Resources of the United States—Economic and Environmental Geology and Prospects for Future Supply U.S. Department of the Interior U.S. Geological Survey Professional Paper 1802–O.

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Rare Earth Elements - geolsoc.org.uk

2020-4-8  name ‘rare earth elements’ come to be associated solely with the specific set of elements it denotes today. In fact, in terms of their overall abundance in the Earth’s crust, the REE are not particularly rare. On average, as a proportion of the Earth’s continental crust, Cerium (Ce) is the most abundant, at 43 parts per million (ppm),

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Rare Earth Elements (REE) in Chondrites

2020-7-12  “Rare Earth Plots” and the Concentrations of Rare Earth Elements (REE) in Chondritic Meteorites Randy L. Korotev. The following sets of concentration values have been used in the geochemical literature for the purpose of preparing plots of “chondrite-normalized” concentrations of REE against atomic number or inverse ionic radius.

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Resources Free Full-Text Rare Earth Elements: Overview ...

Rare earths are used in the renewable energy technologies such as wind turbines, batteries, catalysts and electric cars. Current mining, processing and sustainability aspects have been described in this paper. Rare earth

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Rare Earth Elements in the Soil Environment - Springer

2017-8-27  Rare Earth Elements in the Soil Environment ... same chemical composition of the material that originated the solar system bodies [24]. Besides the chondrite mete-orites [23], other standards are also used such as the upper continental crust [25], the North American shale composite

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Rare Earth Magnets - Explanation, Types, Applications, and ...

What are Rare Earth Magnets? Rare-earth magnets are permanent magnets having a composition of alloys manufactured from rare earth elements (mostly elements from lanthanide series, and alloys).. They were developed in the 1970s and 1980s and are the strongest types of permanent magnets. They produce magnetic fields that are quite stronger than other types of magnets like alnico and ferrite

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Rare Earth element composition of precipitation ...

1993-11-20  We report the rare earth element (REE) composition of aerosols and precipitation (dissolved and particle phases) from Bermuda, Lewes (Delaware), and Woods Hole (Massachusetts). There is large-scale fractionation of REEs between the continents, atmosphere, and the oceans.

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Rare earth composition and use thereof - Patent - Europe

2002-12-13  The present invention relates to a special-purpose rare earth composition for lawn. It comprises lanthanide series light rare earth element oxide and chelate complex made up by means of reaction of chelating agent. The described rare earth composition also includes adsorption agent. Said invention also provides its application.

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Multi-element and rare earth element composition of ...

2001-2-1  Lichen (n=12) and moss (n=6) species from a remote region of northern Canada have remarkably similar multi-element patterns suggesting they are non-specific accumulators of metals under existing conditions.Within individual species the concentration of many metals analyzed range over an order of magnitude. Many elements have a positive correlation with multi-element (n=48) and REE (rare earth ...

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Rare earth, major, and trace element composition of ...

Rare earth, major, and trace element composition of Monterey and DSDP chert and associated host sediment: Assessing the influence of chemical fractionation during diagenesis: Series title: Geochimica et Cosmochimica Acta: DOI: 10.1016/0016-7037(92)90351-I: Volume: 56: Issue: 7: Year Published: 1992: Language: English: Publisher: Wiley ...

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Rare Earth Elements - geolsoc.org.uk

2020-4-8  name ‘rare earth elements’ come to be associated solely with the specific set of elements it denotes today. In fact, in terms of their overall abundance in the Earth’s crust, the REE are not particularly rare. On average, as a proportion of the Earth’s continental crust, Cerium (Ce) is the most abundant, at 43 parts per million (ppm),

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Rare-earth element - Minerals and ores Britannica

2021-10-21  Rare-earth element - Rare-earth element - Minerals and ores: The content of the individual rare-earth elements varies considerably from mineral to mineral and from deposit to deposit. The minerals and ores are generally classified as “light” or “heavy”; in the former group most of the elements present are the light-atomic-weight elements (i.e., lanthanum, cerium, praseodymium ...

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Resources Free Full-Text Rare Earth Elements: Overview ...

Rare earths are used in the renewable energy technologies such as wind turbines, batteries, catalysts and electric cars. Current mining, processing and sustainability aspects have been described in this paper. Rare earth availability is undergoing a

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Rare Earth Elements (REE) in Chondrites

2020-7-12  “Rare Earth Plots” and the Concentrations of Rare Earth Elements (REE) in Chondritic Meteorites Randy L. Korotev. The following sets of concentration values have been used in the geochemical literature for the purpose of preparing plots of “chondrite

Read More
Rare Earth Elements in the Soil Environment - Springer

2017-8-27  Rare Earth Elements in the Soil Environment ... same chemical composition of the material that originated the solar system bodies [24]. Besides the chondrite mete-orites [23], other standards are also used such as the upper continental crust [25], the North American shale composite

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Rare earth double perovskites: a fertile soil in the field ...

2019-7-8  Tuning the composition of perovskite oxides results in double perovskites with cation ordering. One of the most important families of double perovskites is A 2 B′B′′O 6.With great structural variability, A 2 B′B′′O 6 are promising candidates for a broad range of applications such as magnetic, optical, electrical, and catalytic applications. . Rare earth elements, as the ensemble of ...

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Rare earth element composition of Paleogene vertebrate ...

2009-4-1  Rare earth element contents of jurassic fish and reptile teeth and their potential relation to seawater composition (Anglo-Paris Basin, France and England) Chem. Geol. , 186 ( 2002 ) , pp. 1 - 16 Article Download PDF View Record in Scopus Google Scholar

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Influence of rare-earth doping on the phase composition ...

2021-10-19  BaHf 0.8 Ln 0.2 O 3-δ doped with rare earth elements with different ionic radii (Ln = Yb, Y, Dy and Gd) as candidate materials for solid oxide fuel cells and H 2 separation membrane have been prepared. Their phase composition, sinterability, chemical stability and conductivity were studied systematically. The rare earth elements are successfully incorporated into the main phase crystal ...

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Praseodymium-rich iron-boron-rare earth composition ...

A permanent magnet having substantially stable magnetic properties is disclosed having as the active magnetic component a sintered product of compacted particulate iron-boron-rare earth intermetallic material, said sintered product having pores which are substantially non-interconnecting, a density of at least 87 percent of theoretical and a composition consisting essentially of in atomic ...

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Effects of rare earth oxides on phase composition and ...

2021-1-26  In this study, effects of rare earth oxides Ln2O3 (Ln = Ce, Sm, La, Nd) on crystal structure, phase compositions, and microwave dielectric properties of ixiolite-type Zn0.5Ti0.5NbO4 ceramic were studied based on powder X-ray diffraction patterns and Rietveld refinement methods. Addition of Ln3+ cations brought in a different secondary phase, which strongly relied on the types of Ln elements ...

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Rare-Earth Elements - USGS

2017-11-27  Rare-Earth Elements Chapter O of Critical Mineral Resources of the United States—Economic and Environmental Geology and Prospects for Future Supply U.S. Department of the Interior U.S. Geological Survey Professional Paper 1802–O.

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Polyaniline and rare earth metal oxide composition: A ...

2021-2-20  Polyaniline and a rare earth metal oxide were used for the composition of hybrid supercapacitor electrode. Ø. In-situ chemical oxidation polymerization method was implied to synthesize. Ø. Material and electrochemical characterization were carried out to validate the material and the electrode efficiency. Ø

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Rare Earth Elements (REE) in Chondrites

2020-7-12  2020-7-12  “Rare Earth Plots” and the Concentrations of Rare Earth Elements (REE) in Chondritic Meteorites Randy L. Korotev. The following sets of concentration values have been used in the geochemical literature for the purpose of preparing plots of “chondrite

Read More
Rare Earth Magnets - Explanation, Types, Applications, and ...

What are Rare Earth Magnets? Rare-earth magnets are permanent magnets having a composition of alloys manufactured from rare earth elements (mostly elements from lanthanide series, and alloys).. They were developed in the 1970s and 1980s and are the strongest types of permanent magnets. They produce magnetic fields that are quite stronger than other types of magnets like alnico and ferrite

Read More
Rare earth elements in authigenic methane-seep

2010-10-1  Rare earth element and yttrium (REE + Y) concentrations were determined by LA-ICP-MS and solution ICP-MS, both conducted on a ThermoFinigan Element2 mass spectrometer at the University of Bremen.The use of LA-ICP-MS allowed phase-specific high-resolution probing of REE + Y concentrations in homogeneous carbonate phases on thin sections.The laser (NewWave UP193) was

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Effect of inclusions modified by rare earth elements (Ce ...

2017-12-1  In this work the initial stages of the pitting corrosion in Q460NH weathering steel in a marine environment was studied. To elucidate the effects of inclusions modified by rare earth (RE) elements on pitting corrosion, field emission-scanning electron microscopy-energy dispersive spectrometry (FE-SEM-EDS) analyses, scanning Kelvin probe force microscopy (SKPFM) tests, and a series of immersion ...

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