scholarly journals High Eu 4f low-energy oscillator strength in the isostructural rare-earth Zintl compounds EuIn2X2 (X = P,As)

2012 ◽  
Vol 100 (15) ◽  
pp. 151906 ◽  
Author(s):  
N. Singh ◽  
U. Schwingenschlögl
Keyword(s):  
Rare Earth ◽  
Oscillator Strength ◽  
Low Energy

scholarly journals Direct Drive Applications: Possible Replacement of Rare-Earth Permanent Magnet Motors

Energies ◽  
2021 ◽  
Vol 14 (23) ◽  
pp. 8058
Author(s):  
Chaelim Jeong ◽  
Luca Cinti ◽  
Nicola Bianchi
Keyword(s):  
Rare Earth ◽  
Permanent Magnet ◽  
Low Energy ◽  
Direct Drive ◽  
Permanent Magnet Motors ◽  
Stator Flux ◽  
Type Motor

This paper deals with the possibility to replace rare-earth permanent magnet (PM) motors in direct drive applications. According to previous researches, there are alternatives such as surface-mounted PM motors and spoke-type motors adopting Ferrite PMs, synchronous reluctance motors, with or without the assistance of low-energy PMs. Few studies have been carried out to compare all models at once, thus it is hard to choose which type motor is to be preferred as a valid alternative of rare-earth PM motors in direct drive applications. In this paper, the representative candidates listed above are analyzed and the results are compared with that of a rare-earth PM motor, which is considered as a reference motor. Additionally, the demagnetization phenomenon of the motors with Ferrite PMs is deeply analyzed because this kind of PM may be easily demagnetized by the stator flux. Finally, both strengths and weaknesses of each alternative motors are highlighted.

EXCEPTIONAL STRUCTURES IN THE ODD-ODD NUCLEUS 250Md

2000 ◽  
Vol 09 (04) ◽  
pp. 309-317 ◽  
Author(s):  
P. C. SOOD ◽  
M. SAINATH ◽  
K. VENKATARAMANIAH
Keyword(s):  
Rare Earth ◽  
Energy Spectrum ◽  
Ground State ◽  
Low Energy ◽  
Α Decay ◽  
Decay Modes ◽  
Proton Interaction ◽  
Zero Range ◽  
Singlet Band ◽  
Rare Earth Nucleus

The low-energy two-quasiparticle bandhead energies for the odd-odd Z=101 nucleus 250 Md are evaluated using a zero range residual neutron-proton interaction. The 250Md ground state is seen to have the spin-parity Iπ=0- corresponding to the singlet band from the configuration {p : 7/2[514]⊗n:7/2[624]} in violation of the Gallagher-Moszkowski (GM) coupling rule. The situation here is shown to be almost identical to that for the rare-earth nucleus 166 Ho , which is the only well-established exception to the GM rule known so far. Analysis of the expected low energy spectrum, including the rotational levels, for 250 Md reveals the occurrence of an as-yet-unobserved long-lived high-spin Iπ = 7- isomeric state around (80±30) keV with dominant ε and α decay modes.

scholarly journals Large low-energy oscillator strength for Ce 4felectrons in the solid state

1991 ◽  
Vol 44 (16) ◽  
pp. 8526-8528 ◽  
Author(s):  
Kwang Joo Kim ◽  
Bruce N. Harmon ◽  
David W. Lynch ◽  
Dale D. Koelling
Keyword(s):  
Solid State ◽  
Oscillator Strength ◽  
Low Energy

scholarly journals ELECTRONIC POLARIZABILITIES OF RARE EARTH IONS IN Nd COMPOUNDS (ClO4) 3 (MMNO) 6 E Er (ClO4 ) 3 (MMNO) 6 IN SOLUTION

2008 ◽  
Vol 05 (9) ◽  
pp. 38-43
Author(s):  
Francisco José Santos LIMA ◽  
Afranio Gabriel da SILVA ◽  
Vandeci Dias dos SANTOS
Keyword(s):  
Rare Earth ◽  
Oscillator Strength ◽  
Electronic Spectra ◽  
Rare Earth Ions ◽  
Optical Parameters

Electronic Polarizabilidades of the íons Nd3+ and Er3+ were appraised for the species in different environments chemical (perclorate-H2O and perclorate-MMNO) and related with the optical parameters of bond and oscillator strength, starting from the electronic spectra of absorption of the compositions in solution methanolic.

scholarly journals ELECTRONIC POLARIZABILITIES OF NEODYMIUM AND ERBIUM MALEATES HYDRATED

2011 ◽  
Vol 08 (16) ◽  
pp. 67-73
Author(s):  
Francisco José Santos LIMA ◽  
Roseane Maria de MELO ◽  
Ademir Oliveira da SILVA
Keyword(s):  
Electric Field ◽  
Oscillator Strength ◽  
Coordination Compound ◽  
Electronic Transition ◽  
Low Energy ◽  
Ligand Field ◽  
Metallic Ions ◽  
Electronic Cloud ◽  
Spectral Area

The oscillator strength and the polarizability electronic have been used to evaluate modifications in the levels of energy of metallic ions in the coordination compound. The first property evaluates the disturbance in the states of energy caused by the force of the ligand field of the groups of atoms that are linked with the metal. The second property evaluates the easiness in which the electric field of the radiation promotes an electronic transition. In this work they were appraised these properties for the neodymium and erbium hydrated maleates. In agreement with the results, it was possible to observe that there is a significant increase in the deformation of the electronic cloud of the ion Nd3+, in the transition of smaller energy. In the erbium maleate an increase was also observed in the polarizability, in the transition of smaller energy.. We ended that, in these systems, the spectral area of low energy influenced more in the deformation of the electronic cloud of the species.

Stable Singlet Biradicals of Rare‐Earth‐Fused Diporphyrin‐Triple‐Decker Complexes with Low Energy Gaps and Multi‐Redox States

2019 ◽  
Author(s):  
Sunri Lee ◽  
Ken‐ichi Yamashita ◽  
Naoya Sakata ◽  
Yasukazu Hirao ◽  
Kaya Ogawa ◽  
...  
Keyword(s):  
Rare Earth ◽  
Low Energy ◽  
Redox States ◽  
Energy Gaps
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