Measurement of Spin-Scattering Anisotropy and Exchange-Coupling Energy in Cu-Fe, Using the Wave Shape of the de Haas—van Alphen Effect

1973 ◽  
Vol 30 (15) ◽  
pp. 705-708 ◽  
Author(s):  
H. Alles ◽  
R. J. Higgins ◽  
D. H. Lowndes
Keyword(s):  
Exchange Coupling ◽  
Wave Shape ◽  
Coupling Energy ◽  
Spin Scattering ◽  
Scattering Anisotropy

Electronic States and Magnetic Coupling in Fe/Fe3O4 Junctions

2011 ◽  
Vol 1292 ◽  
Author(s):  
J. Inoue ◽  
T. Kida ◽  
S. Honda ◽  
H. Itoh ◽  
H. Yanagihara ◽  
...  
Keyword(s):  
Exchange Coupling ◽  
Magnetic Moments ◽  
Magnetic Coupling ◽  
Exchange Interactions ◽  
Coupling Energy ◽  
Local Moments ◽  
Potential Applicability ◽  
Atomic Exchange ◽  
Magnetic States ◽  
Fe Ions

ABSTRACTExchange coupling observed recently in Fe/ Fe3O4 (001) junctions shows comparable intensity to that in Co/Ru/Co trilayers, and has potential applicability to spintronics devices. To clarify the mechanism of the exchange coupling, electronic and magnetic states of Fe/ Fe3O4 junctions are calculated in the first principles method by assuming four junction structures of bcc Fe and Fe3O4 layers. It is shown that the local moments of bcc Fe atoms at the interface increase, but those of Fe ions at the interface of Fe3O4 layer decrease. The total energy of the junctions is plotted as a function of distance between Fe and Fe3O4 layers. Calculated results of the coupling energy between Fe and Fe3O4 layers, however, are larger than experimental ones by two orders of magnitude, and they correspond to inter-atomic exchange interactions at the interface. In order to explain the experimental results, we propose a mechanism of exchange coupling mediated by impurity-like states of interfacial Fe atoms which possess reversed magnetic moments in bcc Fe layer. Frustration effects in exchange coupling between Fe and Fe3O4 layers are also discussed.

Manipulation of exchange coupling energy in a few-electron double quantum dot

2008 ◽  
Vol 77 (24) ◽  
Author(s):  
T. Hatano ◽  
S. Amaha ◽  
T. Kubo ◽  
Y. Tokura ◽  
Y. Nishi ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Exchange Coupling ◽  
Double Quantum ◽  
Coupling Energy ◽  
Double Quantum Dot

Tuning the coercivity and exchange bias by controlling the interface coupling in bimagnetic core/shell nanoparticles

Nanoscale ◽  
2017 ◽  
Vol 9 (29) ◽  
pp. 10240-10247 ◽  
Author(s):  
Gabriel C. Lavorato ◽  
Enio Lima ◽  
Horacio E. Troiani ◽  
Roberto D. Zysler ◽  
Elin L. Winkler
Keyword(s):  
Exchange Bias ◽  
Exchange Coupling ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Coupling Energy ◽  
Interface Coupling ◽  
Compositional Modulation ◽  
Core Shell Nanoparticles

The compositional modulation of the interfacial exchange-coupling energy enables control of the coercivity and the exchange bias in antiferromagnetic/ferrimagnetic core/shell nanoparticles.

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