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.

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.

Magnetooptical and magnetic properties of Fe/ZnTe/Fe nanoheterostructures: Manifestation of interlayer exchange coupling

2006 ◽  
Vol 102 (2) ◽  
pp. 149-156 ◽  
Author(s):  
I. D. Lobov ◽  
V. M. Maevskii ◽  
M. M. Kirillova ◽  
A. V. Korolev ◽  
F. A. Pudonin
Keyword(s):  
Magnetic Properties ◽  
Exchange Coupling ◽  
Interlayer Exchange Coupling ◽  
Interlayer Exchange

scholarly journals Magnetic properties, interlayer exchange coupling and electric transport in Fe/Cr/Fe trilayers

2002 ◽  
Vol 82 (1) ◽  
pp. 85-104 ◽  
Author(s):  
A. Vernes ◽  
P. Weinberger ◽  
C. Blaas ◽  
P. Mohn ◽  
L. Szunyogh ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Exchange Coupling ◽  
Electric Transport ◽  
Interlayer Exchange Coupling ◽  
Interlayer Exchange

scholarly journals High Temperature Magnetic Properties of Indirect Exchange Spring FePt/M(Cu,C)/Fe Trilayer Thin Films

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Anabil Gayen ◽  
Barnali Biswas ◽  
Akhilesh Kumar Singh ◽  
Padmanapan Saravanan ◽  
Alagarsamy Perumal
Keyword(s):  
Thin Films ◽  
Magnetic Properties ◽  
High Temperature ◽  
Exchange Coupling ◽  
High Performance ◽  
Interlayer Exchange Coupling ◽  
Magnetic Studies ◽  
Different Temperatures ◽  
Interlayer Exchange ◽  
Hard Magnetic Properties

We report the investigation of temperature dependent magnetic properties of FePt and FePt(30)/M(Cu,C)/Fe(5) trilayer thin films prepared by using magnetron sputtering technique at ambient temperature and postannealed at different temperatures.L10ordering, hard magnetic properties, and thermal stability of FePt films are improved with increasing postannealing temperature. In FePt/M/Fe trilayer, the formation of interlayer exchange coupling between magnetic layers depends on interlayer materials and interface morphology. In FePt/C/Fe trilayer, when the C interlayer thickness was about 0.5 nm, a strong interlayer exchange coupling between hard and soft layers was achieved, and saturation magnetization was enhanced considerably after using interlayer exchange coupling with Fe. In addition, incoherent magnetization reversal process observed in FePt/Fe films changes into coherent switching process in FePt/C/Fe films giving rise to a single hysteresis loop. High temperature magnetic studies up to 573 K reveal that the effective reduction in the coercivity decreases largely from 34 Oe/K for FePt/Fe film to 13 Oe/K for FePt/C(0.5)/Fe film demonstrating that the interlayer exchange coupling seems to be a promising approach to improve the stability of hard magnetic properties at high temperatures, which is suitable for high-performance magnets and thermally assisted magnetic recording media.

Change of Interlayer Exchange Coupling between the Adjacent Magnetic Transition Metal Layers across a Rare-Earth Metal Layer by Hydrogenation

2006 ◽  
Vol 512 ◽  
pp. 177-182
Author(s):  
Yasushi Endo ◽  
Takanobu Sato ◽  
Tadashi Kaneko ◽  
Yoshio Kawamura ◽  
Masahiko Yamamoto
Keyword(s):  
Magnetic Properties ◽  
Rare Earth ◽  
Transition Metal ◽  
Rare Earth Metal ◽  
Exchange Coupling ◽  
Magnetic Transition ◽  
Earth Metal ◽  
Interlayer Exchange Coupling ◽  
The Difference ◽  
Interlayer Exchange

We have studied the change of the interlayer exchange coupling between the adjacent magnetic transition metal (TM) layers across a rare-earth metal (REM) layer by hydrogenation in TM (10 nm)/REM (t nm)/TM (10 nm) trilayers composed of Fe and Co as the TM and Y as the REM. In the case of the Fe as TM, the magnetic properties are sensitive to hydrogenation. In particular, the interlayer exchange coupling changes remarkably by hydrogenation. On the other hand, in the case of the Co as TM, the magnetic properties do not change by hydrogenation, and the change of the coupling by hydrogenation cannot be confirmed. The difference of the change of the coupling by hydrogenation between TM=Fe and TM=Co should be attributed to the difference of the TM/Y interface state.

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.

The influence of interlayer exchange coupling on magnetic ordering in Fe/V superlattices

2009 ◽  
Vol 321 (9) ◽  
pp. 1214-1220 ◽  
Author(s):  
M. Marcellini ◽  
M. Pärnaste ◽  
B. Hjörvarsson ◽  
G. Nowak ◽  
H. Zabel
Keyword(s):  
Exchange Coupling ◽  
Magnetic Ordering ◽  
Interlayer Exchange Coupling ◽  
Interlayer Exchange
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