Rare earth element diffusion in diopside: influence of temperature, pressure, and ionic radius, and an elastic model for diffusion in silicates

2001 ◽  
Vol 141 (6) ◽  
pp. 687-703 ◽  
Author(s):  
James A. Van Orman ◽  
Timothy L. Grove ◽  
Nobumichi Shimizu
Keyword(s):  
Rare Earth ◽  
Rare Earth Element ◽  
Ionic Radius ◽  
Earth Element ◽  
Elastic Model ◽  
Influence Of Temperature ◽  
Element Diffusion

Probing the history of UHT metamorphism through rare earth element diffusion in zircon

2021 ◽  
Author(s):  
E. Blereau ◽  
C. Clark ◽  
P. D. Kinny ◽  
E. Sansom ◽  
R. J. M. Taylor ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Element ◽  
Earth Element ◽  
Element Diffusion ◽  
History Of ◽  
Uht Metamorphism

Rare earth element diffusion in natural enstatite

2007 ◽  
Vol 71 (5) ◽  
pp. 1324-1340 ◽  
Author(s):  
Daniele J. Cherniak ◽  
Yan Liang
Keyword(s):  
Rare Earth ◽  
Rare Earth Element ◽  
Earth Element ◽  
Element Diffusion

Dramatically Enhanced Thermoelectric Properties of Ca3Co4Oy by Large Amount of RE Substitution

2004 ◽  
Vol 848 ◽  
Author(s):  
Y. Sugiura ◽  
S. Horii ◽  
T. Kumagai ◽  
T. Okamoto ◽  
K. Otzschi ◽  
...  
Keyword(s):  
Rare Earth ◽  
Seebeck Coefficient ◽  
Thermoelectric Properties ◽  
Rare Earth Element ◽  
Figure Of Merit ◽  
Ionic Radius ◽  
Earth Element ◽  
Synthesis Conditions ◽  
Local Structures ◽  
Dimensionless Figure Of Merit

ABSTRACTWe report the synthesis and thermoelectric properties of [(Ca1-xREx)2CoO3-δ]0.62CoO2 compounds (RE: rare earth element, RE = Y, Sm, Eu, Tb, Dy, Ho and Lu). From optimization of synthesis conditions, all the chosen RE in this study were able to be substituted for the Ca sites in the block layers up to x = 0.25. In the case of RE = Tb, at 1150 K, only κ was systematically decreased with x, while both Seebeck coefficient (S) and resistivity (ρ) were almost constant for the charge of x. Consequently, the dimensionless figure of merit (ZT) was increased with x and reached 0.2 at 1150 K for x = 0.25. Moreover, interestingly, it was found that S and ρ at 300 K were enhanced with ionic radius of the doped trivalent RE ions in spite of the doping of equivalent RE ions. This is probably because local structures of oxygen sites around Co ion in the CoO2 layers largely depend on kinds of the doped RE.

Rare earth element diffusion in a natural pyrope single crystal at 2.8 GPa

2002 ◽  
Vol 142 (4) ◽  
pp. 416-424 ◽  
Author(s):  
James A. Van Orman ◽  
Timothy L. Grove ◽  
Nobumichi Shimizu ◽  
Graham D. Layne
Keyword(s):  
Rare Earth ◽  
Single Crystal ◽  
Rare Earth Element ◽  
Earth Element ◽  
Element Diffusion

RARE EARTH ELEMENT AND THORIUM ASSAYING IN PARTS OF THE EAST COAST, INDIA

2016 ◽  
Author(s):  
Shayantani Ghosal ◽  
◽  
Sudha Agrahari ◽  
Debashish Sengupta
Keyword(s):  
Rare Earth ◽  
Rare Earth Element ◽  
Earth Element ◽  
East Coast
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