A tripartite game analysis of public participation in …
Rare earth enterprises can choose two behavioral strategies of legal mining or illegal mining, and their strategy set is M 2 ... Therefore, due to the limitation of space, this paper only qualitatively analyzes the asymptotic stability of points A (the initial stage of environmental regulation in rare earth mining areas), D, and H.
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Rare earth elements: A review of applications
Rare-earth elements (hereinafter referred to as REE) are a group of seventeen chemical elements in the periodic table, in particular the fifteen lanthanides as well as yttrium and scandium as defined by the International Union of Pure and Applied Chemistry (IUPAC). Scandium and yttrium are considered REE since they tend to occur in the …
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How rare earth elements make modern technology possible
How rare earth elements' hidden properties make modern technology possible. These 17 metals fine-tune light and generate powerful magnetic fields. In August, China finished constructing a maglev ...
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Rare earth elements in plants: transfer, transport, …
Rare earth selements (REEs) are a group of metallic elements gaining growing attention in biology. REEs are comprised of 17 elements with scandium (Sc), yttrium (Y), and 15f-block lanthanides (Ln) with atomic numbers ranging from 57 to 71, for lanthanum (La) and lutetium (Lu), respectively. ... which were quantitatively and …
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14 Best Rare Earth Stocks and ETFs
MP. SQM. CSTM. TROX. In this article, we will take a look at the 14 best rare earth stocks and ETFs. To see more such companies, go directly to 5 Best Rare Earth Stocks and ETFs. Rare earth metals ...
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Rare earth zirconate nanostructures: Recent development on preparation
The design of rare earth zirconates (Ln 2 Zr 2 O 7) as a remarkable class of materials with striking characteristics has been considered one of the most significant areas of research in recent times.Many investigations have indicated their promising and substantial applications in various fields, specifically in photocatalysis.Herein, the recent …
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National scale assessment for rare earth elements in …
This dataset is in support of the publication "The addition of 144Nd to routine ICP-MS analysis as a quick screening tool for approximating earth elements (Q-STAR) in natural waters". It contains inductively coupled plasma mass spectrometry (ICP-MS) data from samples analyzed at the National Water Quality Laboratory (NWQL) from April 2021 …
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Beyond rare earths | Nature Materials
But the rare earths remain in relatively short supply throughout the world, the primary sources being in China (38%), Vietnam, Brazil and Russia. That combination of …
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Journal of Rare Earths | ScienceDirect by Elsevier
The Journal of Rare Earths reports studies on the 17 rare earth elements. It is a unique English-language learned journal that publishes works on various aspects of basic theory and applied science in the field of rare earths (RE). The journal accepts original high-quality original research papers and review articles with inventive content, and ...
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Effect of Al-3Ti-1B-1.5Ce Refiner on Microstructure and
In this study, rare earth Ce element was added into the Al-Ti-B master alloy, the refining effect of Al-3Ti-1B-1.5Ce on A356 aluminum alloy was studied, the existence mode of rare earth Ce in A356 aluminum alloy was discussed, and the effect mechanism of Ce element was determined [11,12,13]. And the influence and mechanism of the second …
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Probing Surface Characteristics of Rare Earth …
Introduction. Jump To. The research in the field of rare earth elements (REEs) and their compounds is ongoing to better understand their physics and chemistry, which is essential to develop more efficient …
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Effects of rare-earth magnetism on the superconducting …
Following the initial discovery of superconductivity in Nd 0.8 Sr 0.2 NiO 2 (), the subsequent development of rare-earth (R) variants with Pr and La in place of Nd (2–5) has created an emerging family of superconducting infinite-layer nickelates (6–8).Unlike the cuprates, with which the nickelates are often compared, R-site variations are expected to …
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Analysis of Rare Earth Elements in Uranium Using Handheld …
A portable handheld laser-induced breakdown spectroscopy (HH LIBS) instrument was evaluated as a rapid method to qualitatively analyze rare earth elements in a uranium oxide matrix. This research is motivated by the need for development of a method to perform rapid, at-line chemical analysis in a nuclear facility, particularly to …
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Authentication of European sea bass according to production
In this work, stable isotope ratio (SIR) and rare earth elements (REEs) analyses, combined with multivariate data elaboration, were used to explore the possibility to authenticate European sea bass ... (OPLS-DA), to obtain functional classification models to qualitatively discriminate sea bass according to the conditions under study. OPLSDA ...
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Quantification of rare earth elements using laser-induced breakdown
2.2. Reagents. All the rare earth oxide powders (Eu 2 O 3, Gd 2 O 3, La 2 O 3, Nd 2 O 3, Pr 6 O 11, Sm 2 O 3, and the transition metal oxide Y 2 O 3), were obtained from Alpha Aesar, Ward Hill, Massachusetts (USA).The purity of the oxide powders that were used in this research was 99.99%. The graphite powder that was a natural, …
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Bulk Magnetic Properties | SpringerLink
This chapter discusses the static magnetic properties of the rare earth metals. These, in the general sense, are the macroscopic average response of the material to the microscopic interactions discussed in other chapters of this volume. The study of bulk features complements atomic scale experiments such as neutron diffraction, Möss and ...
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(PDF) Rare earth zirconate nanostructures: Recent …
Rare earth zirconates nanostructures have been introduced as remarkable, effective and promising type of heterogeneous photocatalyst due to their great photoreactivity and long-term stability, in the recent times [121,124,145,146]. It has been reported that the photocatalytic performance of the Ln2Zr2O7 structures are largely dependent on their ...
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The Geology of Rare Earth Elements
The estimated average concentration of the rare earth elements in the Earth's crust, which ranges from around 150 to 220 parts per million (table 1), exceeds that of many other metals that are mined on an industrial …
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Low‐Thermal‐Conductivity Rare‐Earth Zirconates for
This finding is discussed qualitatively with reference to thermal-conductivity theory. ... Rare-earth aluminates (REAlO3) are potential thermal barrier coating (TBC) materials, but the relatively ...
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Rare earths: global reserves by country 2023 | Statista
Published by Statista Research Department, Feb 6, 2024. China's reserves of rare earths amounted to an estimated 44 million metric tons of rare earth oxide equivalent (REO) in 2023, thereby ...
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Effect of Qualitative and Quantitative Ratios of Rare-Earth …
Abstract The effect of rare-earth elements on the microstructure and properties of an Mg–Zr–REM magnesium alloy, which is characterized by enhanced strength characteristics and an elevated ignition temperature, is studied. When the alloy was melted, its alloying range was varied. Comprehensive studies of the …
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Effect of yttrium and lanthanum on the tensile creep …
The tensile creep behavior of two rare-earth dopant systems, lanthanum- and yttrium-doped alumina, are compared and contrasted in order to better understand the role of oversized, isovalent cation dopants in determining creep behavior. ... It was found that, despite some microstructural differences, these systems displayed qualitatively a ...
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Rare Earths Statistics and Information | U.S.
The elemental forms of rare earths are iron gray to silvery lustrous metals that are typically soft, malleable, and ductile and usually reactive, especially at elevated temperatures or …
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Low‐Thermal‐Conductivity Rare‐Earth Zirconates for Potential …
All rare-earth zirconates investigated here showed nearly identical thermal conductivities, all of which were ∼30% lower than the thermal conductivity of 7YSZ in the temperature range 25°–700°C. This finding is discussed qualitatively with reference to thermal-conductivity theory.
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Interface-Induced and Interface-Enhanced Superconductivity
The most unusual observation of all is the non-bulk superconductivity up to 49 K induced in single-crystalline Ca122 at ambient pressure by slight Ca-replacement with a rare-earth element, La, Ce, Pr, or Nd [(Ca 1-x R x)122] [16, 17], as exemplified by their magnetic susceptibility and resistivity as a function of temperature with a two-step ...
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Automated Quantitative Rare Earth Elements …
The Rare Earth Elements (REEs) comprise the lanthanides, a group of 15 metals, as well as Sc and Y because they tend to occur in the same mineral assemblage as the lanthanides and exhibit …
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Effective extraction of rare earth elements from ion …
Rare earth ores had certain toxic effects on Aspergillus niger strain. ... XRD can qualitatively analyze the material composition by X-ray diffraction and its diffraction pattern. Fourier Transform Infrared Spectroscopy (FT-IR) uses a certain wavelength of infrared radiation to irradiate the surface of the sample, and identifies the molecular ...
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What are rare earth elements, and why are they …
A precise definition of rare earth elements (REEs) and in-depth discussion of how common REEs are, worldwide REE production, and current …
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Oxidation behavior of ignition-proof magnesium alloys with rare earth …
The third-element effect was explained qualitatively in Wagner's paper [16]. The third element was considered to play a role of "getter" which inhibits the diffusion of O to internal alloy so as to inhibit the inner oxidation of Y. For high temperature oxidation of Mg–Y–Ce alloys, MgO, Y 2 O 3 and Ce 2 O 3 initially form simultaneously.
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Distribution of rare earth elements (REEs) in supergene …
The exploitation of ion adsorption-type rare earth element (REE) deposits using in-situ leaching technology has become increasingly popular in recent years. However, the migration of REEs into the surrounding environment has raised significant concerns. ... Thus, XAFS speciation results are qualitatively consistent with that of …
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