Magnetic alignment of cuprate superconductors containing rare earth elements (III)

1991 ◽  
Author(s):  
F. Chen ◽  
J. Chen ◽  
J. Sigalovsky ◽  
R. S. Markiewicz ◽  
B. C. Giessen
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Cuprate Superconductors ◽  
Magnetic Alignment

Tri-axial magnetic alignment and rare-earth-dependent tri-axial magnetic anisotropies in REBa2Cu4O8 cuprate superconductors

2013 ◽  
Vol 1654 ◽  
Author(s):  
M. Yamaki ◽  
M. Furuta ◽  
T. Doi ◽  
J. Shimoyama ◽  
S. Horii
Keyword(s):  
Magnetic Field ◽  
Rare Earth ◽  
Magnetic Fields ◽  
Rare Earth Elements ◽  
Single Crystals ◽  
Cuprate Superconductors ◽  
Ambient Pressure ◽  
Axial Orientation ◽  
Magnetic Alignment ◽  
Flux Method

ABSTRACTWe report the growth of single crystals by a flux method in ambient pressure and tri-axial orientation under modulated rotation magnetic fields (MRFs) on REBa2Cu4O8 (RE124, RE; rare earth elements) compounds. RE124 crystals were grown for RE = Y, Sm, Eu, Gd, Dy, Ho, Er, Tm, and Yb through appropriate choice of source compounds. All the obtained RE124 powders were tri-axially aligned in MRF of 10T, whereas magnetization axes depended on the type of RE. Moreover, it was found from the changes in the degrees of c-axis and inplane orientation that tri-axial magnetic anisotropies of RE124 also depended on the type of RE. This indicates that it appropriate choice of RE is important for the fabrication of tri-axial oriented ceramics in lower magnetic field conditions.

Magnetic Alignment of Bi and T1 Cuprates Containing Rare Earth Elements (II)

1989 ◽  
Vol 169 ◽  
Author(s):  
Feng Chen ◽  
Robert S. Markiewicz ◽  
Bill C. Giessen
Keyword(s):  
Magnetic Field ◽  
Rare Earth ◽  
Rare Earth Elements ◽  
Basal Plane ◽  
Magnetic Alignment ◽  
Thallium Cuprates ◽  
Bismuth Cuprates ◽  
Tl Cuprates

AbstractContinuing an earlier study, we report new data on the orientational effects of magnetic field alignment of some bismuth cuprates and 8 additional thallium cuprates. Strong parallel alignment is seen for Lu bismate and Nd, Sm and Ho thallate; strong normal alignment is seen for Tm; however, in contrast to bismates and 123 phase, Tl cuprates show little anisotropy among directions within the basal plane.

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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