scholarly journals Frustration and anisotropic exchange in ytterbium magnets with edge-shared octahedra

2018 ◽  
Vol 98 (5) ◽  
Author(s):  
Jeffrey G. Rau ◽  
Michel J. P. Gingras
Keyword(s):  
Anisotropic Exchange ◽  
Edge Shared Octahedra

scholarly journals Heisenberg and anisotropic exchange interactions in magnetic materials with correlated electronic structure and significant spin-orbit coupling

2021 ◽  
Vol 103 (17) ◽  
Author(s):  
Vladislav Borisov ◽  
Yaroslav O. Kvashnin ◽  
Nikolaos Ntallis ◽  
Danny Thonig ◽  
Patrik Thunström ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Magnetic Materials ◽  
Exchange Interactions ◽  
Orbit Coupling ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Anisotropic Exchange

Large thermopower in metallic misfit cobalt oxides : improvement by cationic substitutions

2001 ◽  
Vol 691 ◽  
Author(s):  
S. Hébert ◽  
L. B. Wang ◽  
A. Maignan ◽  
D. Pelloquin ◽  
M. Hervieu ◽  
...  
Keyword(s):  
Thermoelectric Properties ◽  
Rock Salt ◽  
Figure Of Merit ◽  
Partial Substitution ◽  
Crystallographic Structure ◽  
Cobalt Oxides ◽  
New Family ◽  
Edge Shared Octahedra

ABSTRACTThe thermoelectric properties of misfit cobaltites have been investigated. Their crystallographic structure consists in the stacking of layers of tilted CoO6 edge-shared octahedra, separated by rock-salt type layers. The Tl based family was first investigated : it is shown that by increasing the Tl content, the resistivity ρ can be reduced while keeping a large thermopower S. Another way to improve the figure of merit Z=S2/(ρκ) is to partially substitute Bi for Tl to increase S and keep a small ρ. A new family of Pb-based misfits has also been investigated. Two different techniques have been attempted to decrease ρ and/or increase S in this family : the partial substitution of Cu for Co, and the partial substitution of Ca for Sr.

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