Extracted Species of Rare Earth Elements Using Bis(1,1,3,3-tetramethylbutyl)phosphinic Acid as an Extractant and Their Effective Mutual Separation by High-Performance Extraction Chromatography

1999 ◽  
Vol 72 (12) ◽  
pp. 2693-2697 ◽  
Author(s):  
Qiu-quan Wang ◽  
Ben-li Huang ◽  
Kin-ichi Tsunoda ◽  
Hideo Akaiwa
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Extraction Chromatography ◽  
High Performance ◽  
Phosphinic Acid ◽  
Mutual Separation

scholarly journals Intrinsically weak magnetic anisotropy of cerium in potential hard-magnetic intermetallics

2021 ◽  
Vol 6 (1) ◽  
Author(s):  
Anna Galler ◽  
Semih Ener ◽  
Fernando Maccari ◽  
Imants Dirba ◽  
Konstantin P. Skokov ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Magnetic Anisotropy ◽  
High Performance ◽  
Kondo Effect ◽  
Quantitative Description ◽  
Many Body ◽  
Heavy Rare Earth Elements ◽  
Fe Intermetallics ◽  
Full Temperature

AbstractCerium-based intermetallics are currently attracting much interest as a possible alternative to existing high-performance magnets containing scarce heavy rare-earth elements. However, the intrinsic magnetic properties of Ce in these systems are poorly understood due to the difficulty of a quantitative description of the Kondo effect, a many-body phenomenon where conduction electrons screen out the Ce-4f moment. Here, we show that the Ce-4f shell in Ce–Fe intermetallics is partially Kondo screened. The Kondo scale is dramatically enhanced by nitrogen interstitials suppressing the Ce-4f contribution to the magnetic anisotropy, in striking contrast to the effect of nitrogenation in isostructural intermetallics containing other rare-earth elements. We determine the full temperature dependence of the Ce-4f single-ion anisotropy and show that even unscreened Ce-4f moments contribute little to the room-temperature intrinsic magnetic hardness. Our study thus establishes fundamental constraints on the potential of cerium-based permanent magnet intermetallics.

A Model for Calculating the Characteristics of Separation of Transplutonium and Rare Earth Elements by High-Performance Liquid Chromatography

2018 ◽  
Vol 60 (3) ◽  
pp. 263-273
Author(s):  
S. G. Tret’yakova ◽  
V. L. Vidanov ◽  
V. A. Tkachenko ◽  
O. V. Shmidt ◽  
O. V. Kharitonov ◽  
...  
Keyword(s):  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
Rare Earth ◽  
Rare Earth Elements ◽  
High Performance

Extraction of rare-earth elements from nitric acid solutions with bis(dioctylphosphinylmethyl)phosphinic acid

2006 ◽  
Vol 48 (1) ◽  
pp. 47-52
Author(s):  
A. N. Turanov ◽  
V. K. Karandashev ◽  
A. N. Yarkevich ◽  
Z. V. Safronova
Keyword(s):  
Rare Earth ◽  
Nitric Acid ◽  
Rare Earth Elements ◽  
Phosphinic Acid ◽  
Acid Solutions ◽  
Nitric Acid Solutions

Solvent extraction of rare earth elements using phosphonic/phosphinic acid mixtures

2015 ◽  
Vol 157 ◽  
pp. 298-305 ◽  
Author(s):  
James E. Quinn ◽  
Karin H. Soldenhoff ◽  
Geoff W. Stevens ◽  
Nigel A. Lengkeek
Keyword(s):  
Rare Earth ◽  
Solvent Extraction ◽  
Rare Earth Elements ◽  
Phosphinic Acid
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