Abstract. We review the works performed on whispering gallery mode (WGM) micro-optical resonators made in rare-earth (RE) doped glasses for implementing low threshold and narrow line coherent sources. These types of micro-lasers, because of their small size and ease of fabrication can be a useful tool for the characterization of laser …

In this study, the influence of the rare earth (RE) ions on the structure, morphology, magnetic behavior, dielectric properties, and application of AFeO 3 perovskite was studied. The perovskite nanoparticles AFeO 3 (A: La, Nd, and Sm) were synthesized using the citrate auto combustion method. The x-ray diffraction (XRD) confirmed that the …

In this review, we provide a systematic overview of rare earth (RE) chalcophosphates in terms of their structure and properties. RE chalcophosphates are classified to several sub-groups according to the different [P x Q y] n − motifs in the structures. Their crystal chemistry and physical properties are summarized in details …

Moreover, to our knowledge, there is only one report of rare earth substitution in NiCr 2 O 4 pertaining to structural and magnetic properties 19. In this contest, we have synthesized rare earth ...

In this article, newly group of zinc bismo-borate (ZnO–Bi 2 O 3 –B 2 O 3) glasses doped with different rare earth oxides (La 2 O 3, CeO 2, Nd 2 O 3, and Gd 2 O 3) have been fabricated. The impact of rare earth ions on the physical, structural characteristics, neutron, and gamma radiation competences of the proposed glasses …

The rare earth elements are 17 metallic elements found in the middle of the periodic table. Some of the rare earth elements have unusual magnetic, luminescent, and electrical properties that make them valuable for industrial applications and in manufactured products. But because these elements have a very similar electron structure (as ...

The rare earths share many common properties. This makes them difficult to separate or even distinguish from each other. There are very small differences in solubility and …

Rare-earth (RE) atoms in solid-state materials are attractive components for photonic quantum information systems because of their coherence properties even in high-temperature environments. We have experimentally performed the single-site optical spectroscopy and optical addressing of a single RE atom in an amorphous silica optical …

The aim of this paper is to review the development of rare earth permanent magnets. The metallurgy and origin of the magnetic hardness of RCo 5 and R 2 Co 17 (R ≡ rare earth) SmCo-based permanent magnets are described. The recent developments of permanent magnets based on Nd 2 Fe 14 B are outlined. The processing of SmCo- and …

The Rare Earth hypothesis argues that a confluence of very specific environmental factors is responsible for Earth's ability to support complex life. These same factors are very unlikely to be ...

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The results indicate that the rock-to-metal ratios for the total rare earth elements ranged from a low of 1.6 × 10 1 to a high of 3.6 × 10 3, with operations in Brazil and Russia having the lowest ratios and ion-adsorption clays operations in China and Myanmar having the highest. For comparison, the global average rock-to-metal ratio for …

Rare-earth elements are widely used in the study of source tracing and geochemical characteristics, which can reflect the degree of influence of human activities on water environment. In order to reveal the additive effects of various human activities on the geochemical characteristics of rare-earth elements in the surface water environment, the …

In this study, we conducted an analysis on rare-earth ion-doped Barium Borate glasses using the orthogonal array mentioned in Table 1, Table 2 The density of glass is a critical factor in the manufacturing of industrial and commercial glass products, as it directly affects various physical properties like molar volume, elasticity, and radiation ...

School of Physical Science and Technology, MOE Key Laboratory of New Processing Technology for Non-ferrous Metals and Materials, Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured Materials, Guangxi University, Nanning 530004, China ... Effective Energy Transfer Boosts Emission of Rare-Earth Double Perovskites: The …

Investigations in the ternary RE−Mn−Bi systems where RE is an early rare earth element have revealed the existence of the polybismuthides RE3MnBi5 (RE = La−Nd), previously known only for the Ce member, and the new compound Sm2Mn3Bi6. Their structures were determined from single-crystal X-ray diffraction data. The …

Tianjin Key Lab for Rare Earth Materials and Applications, Center for Rare Earth and Inorganic Functional Materials, School of Materials Science and Engineering, National Institute for Advanced Materials, Nankai University, Tianjin, China ... For the physical methods, the films can directly form on the substrates with the help of electron …

Therefore, except in one important case, Mountain Pass bastnasite, the physical beneficiation of the rare earth mineral is the same as that used for the main product of the resource. The Mountain Pass bastnasite has a unique process for physical beneficiation. Chemical beneficiation or chemical processing of the concentrate obtained after ...

Common properties of the rare earths. The rare earths are silver, silvery-white, or grey metals. The metals have a high luster, but tarnish readily in air. The …

In the present work, we performed a comprehensive analysis on the effect of rare-earth (RE = Nd, Gd, Dy, and Ho) doping on the physical properties of the Na 0.5 (Bi 3/4 RE 1/4) 0.5 TiO 3 system using the full potential linearized augmented plane wave based on the spin-polarized density functional theory implemented in the WIEN2k code. …

Raman Spectroscopic Study on the Coordination Behavior of Rare Earth Ions in N-Methylacetamide. The Journal of Physical Chemistry B 2008, 112 (42), 13355-13358.

Chemistry. 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...

4CAS Key Laboratory of Photovoltaic and Energy Conservation Materials, Hefei Institutes of Physical Sciences, Chinese Academy of Sciences, Hefei, Anhui 230031, China ... between rare-earth magnetism and topological electron structure, indicating the rare-earth elements can effectively engineer the Chern quantum phase in kagome magnets.

Rare earth elements are a group of seventeen chemical elements that occur together in the periodic table (see image). The group consists of yttrium and the 15 lanthanide elements …

As noted above, the rare-earth elements—especially the lanthanides—are quite similar. They occur together in nature, and their complete separations are difficult to achieve. However, there are some striking differences, …

Three-dimensional cavity quantum electrodynamics with a rare-earth spin ...

The rare earth elements comprise Sc, Y, and the lanthanide elements (La–Lu). Their physical properties and physicochemical behaviors are determined by the characteristics of their atomic electron layer arrangements (Gschneidner 1990).Several lists in this section give the characteristics of the atomic structure of rare earth elements and …

The present study is based on the investigation of the effect of rare-earth (RE) incorporation on the physical properties of CoFe 2 O 4. Rare-earth ions doped cobalt ferrites with composition CoRE 0.025 Fe 1.975 O 4 where RE are Ce, Er and Sm have been synthesized by citrate auto combustion technique. Characterization is achieved using X …

A new technology for rare-earth elements chemical separation has been licensed to Marshallton Research Laboratories, a North Carolina-based manufacturer of organic chemicals for a range of industries. ... Their physical and chemical similarities make them extremely difficult and costly to separate while generating a lot of waste. …

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. ... Substituting the rare-earth element in the parent compound provides a ...