MORB alteration: Rare-earth element/non-rare-earth …
MORB alteration: Rare-earth element/non-rare-earth hygromagmaphile element fractionation ... Qualitatively, the fractionations between REE and non-RE HYG.E in altered basalts are considered regarding the recycling of the oceanic crust into the Earth mantle. The results point out that the interactions between a fluid phase (seawater) and …
Industrial Applications of Rare Earth Elements
I would like to divide the time between that year and the present day into 4 periods of application of the rare earths. First Period: 1788 - 1891 is the preliminary period in which the rare earth elements were scientifically examined but were not yet techni cally used. Second Period: 1891 - 1930 is the period of first industrial usage of the ...
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 …
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 …
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 …
Ultrasensitive Point-of-Care Test for Tumor Marker in …
The point-of-care detection of tumor markers in saliva with high sensitivity and specificity remains a daunting challenge in biomedical research and clinical applications. Herein, a facile and ultrasensitive detection of tumor marker in saliva based on luminescence-amplification strategy of lanthani …
Quantitative estimation of rare earth element …
Volume 103, 1 December 2021, 102423. Quantitative estimation of rare earth element abundances in compositionally distinct carbonatites: Implications for proximal remote …
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, …
Rapid quantitative analysis of rare earth elements Lu and Y in rare …
Rare earth ores are complex in composition and diverse in mineral composition, requiring high technical requirements for the selection of rare earth ores. It is of great significance to explore the on-site rapid detection and analysis methods of rare earth elements in rare earth ores. Laser induced breakdown spectr
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 ...
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 …
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 ...
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 …
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 …
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 ...
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 …
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 …
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 …
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 provide a ...
Characterization of nano-minerals and nanoparticles in supergene rare
Ion adsorption-type rare earth element (REE) ore deposits in South China are a major source of heavy rare earth elements (HREE) around the world, which are of considerable economic and strategic significance. In these ores, REE is enriched in the clay minerals, specifically kaolinite and halloysite, which are derived from their parent granitoid by the …
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 ...
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 …
A systemic approach to the problems of the rare earth …
This paper examines these distortions of the rare earth market with a systemic approach. Problems are identified and structured qualitatively in order to expose their economic and political connections. The systemic problems are (1) competing political-economic models, (2) resource nationalism, (3) market opacity, (4) a lack of trust, (5) …
Quantification of rare earth elements using laser-induced …
LIBS spectra obtained using an Echelle spectrometer for 1% by weight of each of the rare earth (Eu, Gd, La, Nd, Pr, and Sm) and Y (transition metal) oxides, mixed with a 99% balance of graphite powder are shown in Fig. 1 (a). The elemental concentrations range from 0.79% for Y to 0.87% for Gd. The acquired range of the …
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 …
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 ...
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 ...
Rare Earths Statistics and Information | U.S. Geological Survey
The rare earths are a relatively abundant group of 17 elements composed of scandium, yttrium, and the lanthanides. The elements range in crustal abundance from cerium, the 25th most abundant element of the 78 common elements in the Earth's crust at 60 parts per million, to thulium and lutetium, the least abundant rare-earth elements at about 0. ...
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 ...
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 ...
