Temperature dependence of a magnetoresistance effect in the films of ferromagnetic semiconductors based on oxides of rare-earth elements

2001 ◽  
Vol 35 (3) ◽  
pp. 295-297 ◽  
Author(s):  
V. F. Kabanov ◽  
S. A. Karasev ◽  
Ya. G. Fedorenko
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Temperature Dependence ◽  
Ferromagnetic Semiconductors ◽  
Magnetoresistance Effect

Radiation Effects in Murataite Ceramics

2003 ◽  
Vol 807 ◽  
Author(s):  
J. Lian ◽  
L. M. Wang ◽  
R. C. Ewing ◽  
S. V. Yudintsev ◽  
S. V. Stefanovsky
Keyword(s):  
Rare Earth ◽  
Critical Temperature ◽  
Rare Earth Elements ◽  
Temperature Dependence ◽  
Radiation Effects ◽  
Ion Irradiation ◽  
Ion Beam ◽  
Structural Disorder ◽  
Fluorite Structure ◽  
Potential Host

ABSTRACTSynthetic murataite, an isometric, derivative of the fluorite-structure, has been proposed as a potential host phase for the immobilization of rare earth elements (REE) and actinides. A 1 MeV Kr+ ion irradiation has been performed on synthetic murataite ceramics in the system Ca-Ti-U-Mn-Al-Zr-Ce-O for different structural multiples of the fluorite unit cell. The temperature dependence of the amorphization dose has been determined. A higher critical temperature was obtained for the disordered murataite as compared to that of murataite superstructures, suggesting that murataite becomes more “resistant” to ion beam-induced damage with increasing degrees of structural disorder.

Temperature Dependence of Magnetic EXAFS for Rare Earth Elements

2005 ◽  
pp. 600
Author(s):  
H. Wende ◽  
A. Scherz ◽  
C. Sorg ◽  
Z. Li ◽  
P. Poulopoulos ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Temperature Dependence

Flame spectra of the rare-earth elements*

1962 ◽  
Vol 18 (4) ◽  
pp. 1127-1153
Author(s):  
V FASSEL ◽  
R CURRY ◽  
R KNISELEY
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
The Rare Earth

ESTIMATION OF THE ABUNDANCE AND DISTRIBUTION OF RARE EARTH ELEMENTS IN SOIL AROUND KADUNA REFINING AND PETROCHEMICAL COMPANY USING NUCLEAR TECHNIQUE

2020 ◽  
Vol 4 (2) ◽  
pp. 599-604
Author(s):  
Michael A. Onoja ◽  
P. H. Bukar ◽  
C. U. Omeje ◽  
A. M. Adamu
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Nuclear Technique ◽  
Flood Plains ◽  
Economic Exploitation ◽  
Rare Elements ◽  
Petrochemical Company ◽  
The Moment ◽  
Abundance And Distribution ◽  
Natural Pattern

Instrumental neutron activation analysis (INAA) technique was used to investigate the abundance and distribution of rare earth elements (REE) in soil around Kaduna Refinery. The aim of the study is to assess the rare elements potential of Nigeria for economic exploitation. Five REEs (La, Dy, Eu, Yb, and Lu) were detected in varying concentrations ranging from a minimum of 0.6 µg/g (Lu) to a maximum of 249.0 µg/g (La). The elements existed with trends consistent with the natural pattern of REEs in soil, showing significant Eu and Dy anomalies which characterize upper plains and flood plains. The levels of REEs in soil in the study area were generally slightly above background levels, with minimal (La, Dy, and Eu), moderate (Yb), and significant (Lu) enrichments and trending: Lu ˃Yb ˃ Eu ˃ Dy ˃ La. The abundance of the REEs investigated cannot establish a potential of Nigeria for economic exploitation of the mineral, hence, rare earth project in the study area is not viable at the moment.

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