Studies of Exchange Coupling in Fe/Cu/Fe(001) “Loose Spin” Structures

1995 ◽  
Vol 384 ◽  
Author(s):  
M. Kowalewski ◽  
B. Heinrich ◽  
K. Totland ◽  
J.F. Cochran ◽  
S. Govorkov ◽  
...  
Keyword(s):  
Exchange Coupling ◽  
Interlayer Coupling ◽  
Antiferromagnetic Coupling ◽  
Concentration Limit ◽  
Interlayer Exchange Coupling ◽  
High Concentration ◽  
Significant Difference ◽  
Valence Electrons ◽  
Interlayer Exchange

ABSTRACTThe interlayer exchange coupling has been studied in two trilayer structures:(a) 5.7Fe/5Cu/1FecCu1-c/5Cu/10Fe(001), where c=0.0, 0.1, 0.2, 0.45 0.60(b) 5.7Fe/5Cu/1CrcCu1-c/5Cu/10Fe(001), where c=0.1, 0.45, 0.8 and 1.0.The intention of these studies was to identify the role of Fe and Cr atoms in the alloyed FecCu1-c and CrcCu1-c layers on the direct interlayer coupling which is facilitated by the Cu valence electrons. FMR, BLS and MOKE studies were used to determine the interlayer exchange coupling. Mossbauer spectroscopy was used to identify the magnetic state of the Fe atoms in the alloyed layer. The results showed that the presence of foreign atoms inside the Cu spacer significantly decreased the bilinear antiferromagnetic coupling between the Fe layers. In the low concentration limit the Fe and Cr atoms behaved in a similar manner. A significant difference was found in the high concentration limit where the Fe atoms start to be partially magnetically ordered.

Magnetic and electric properties of (Fe, Co)/(Si, Ge) multilayers

Open Physics ◽  
2011 ◽  
Vol 9 (2) ◽  
Author(s):  
Tadeusz Lucinski ◽  
Piotr Chomiuk
Keyword(s):  
Exchange Coupling ◽  
Ion Beam ◽  
Interlayer Coupling ◽  
Magnetic Loop ◽  
Oscillatory Behavior ◽  
Antiferromagnetic Coupling ◽  
Interlayer Exchange Coupling ◽  
Island Growth ◽  
Weak Exchange ◽  
Interlayer Exchange

AbstractWe review selected results concerning the interlayer exchange coupling in Fe/SixFe1−x , Fe/Ge and Co/Si layered structures. Among the ferromagnet/semiconductor systems, Fe/Si structures are the most popular owing to their strong antiferromagnetic interlayer coupling. We show that such interaction depends not only on semiconducting sublayer thickness, but also on deposition techniques and on the chemical composition of the sublayer as well. In similar heterostructures e.g. Fe/Ge, antiferromagnetic coupling was observed only in ion-beam deposited trilayers at low temperatures. In contrast, in Fe/Ge multilayers deposited by sputtering, no such coupling was found. However, when the Ge is partially substituted by Si, antiferromagnetic interlayer coupling appears. For Co/Si multilayers, we observed a very weak exchange coupling and its oscillatory behavior. The growth of Co on Si occurs in an island growth mode. The evolution of magnetic loop shapes can be successfully explained by the interplay between interlayer coupling and anisotropy terms.

scholarly journals The Role of Interfaces in Interlayer Exchange Coupling

1999 ◽  
Vol 23 (1_2) ◽  
pp. 150-155
Author(s):  
B. Heinrich ◽  
M. Kowalewski ◽  
J. F. Cochran
Keyword(s):  
Exchange Coupling ◽  
Interlayer Exchange Coupling ◽  
Interlayer Exchange

scholarly journals Influence of Nanosize Effect and Non-Magnetic Dilution on Interlayer Exchange Coupling in Fe–Cr/Cr Nanostructures

2020 ◽  
Vol 65 (10) ◽  
pp. 898
Author(s):  
D. M. Polishchuk ◽  
M. M. Kulyk ◽  
E. Holmgren ◽  
G. Pasquale ◽  
A. F. Kravets ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Size Effect ◽  
Saturation Magnetization ◽  
Exchange Coupling ◽  
Interlayer Coupling ◽  
Interlayer Exchange Coupling ◽  
Coupling Constant ◽  
Magnetic Polarization ◽  
Magnetic Dilution ◽  
Interlayer Exchange

Magnetic properties of multilayered [Fe–Cr/Cr]×8 nanostructures with the interlayer exchange coupling of the antiferromagnetic type and without the interlayer coupling have been studied. The values of the saturation magnetization and the interlayer exchange coupling constant are shown to strongly depend on the thickness and non-magnetic dilution of the Fe–Cr layers. It is found that those parameters differently affect the interlayer exchange coupling, which is explained by an interplay between the size effect (the thickness of the Fe–Cr layers) and the magnetic polarization of the Fe–Cr/Cr interfaces depending on the Fe concentration.

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