Amplitude and Phase of the Oscillatory Exchange Coupling between Fe-Co-Ni Alloy Layers across a Cu Spacer Layer

1997 ◽  
Vol 78 (2) ◽  
pp. 358-361 ◽  
Author(s):  
J. Kudrnovský ◽  
V. Drchal ◽  
R. Coehoorn ◽  
M. Šob ◽  
P. Weinberger
Keyword(s):  
Exchange Coupling ◽  
Spacer Layer ◽  
Ni Alloy

Exchange-coupling between ferromagnets through a non-metallic amorphous spacer-layer

1992 ◽  
Vol 114 (1-2) ◽  
pp. L6-L10 ◽  
Author(s):  
S. Toscano ◽  
B. Briner ◽  
H. Hopster ◽  
M. Landolt
Keyword(s):  
Exchange Coupling ◽  
Spacer Layer

scholarly journals Control of the noncollinear interlayer exchange coupling

2020 ◽  
Vol 6 (48) ◽  
pp. eabd8861
Author(s):  
Zachary R. Nunn ◽  
Claas Abert ◽  
Dieter Suess ◽  
Erol Girt
Keyword(s):  
Exchange Coupling ◽  
Magnetic Moments ◽  
Interlayer Exchange Coupling ◽  
Magnetic Structures ◽  
Spintronic Devices ◽  
Spacer Layer ◽  
Ferromagnetic Layers ◽  
Almost All ◽  
Interlayer Exchange ◽  
Coupling Angle

Interlayer exchange coupling in transition metal multilayers has been intensively studied for more than three decades and is incorporated into almost all spintronic devices. With the current spacer layers, only collinear magnetic alignment can be reliably achieved; however, controlling the coupling angle has the potential to markedly expand the use of interlayer exchange coupling. Here, we show that the coupling angle between the magnetic moments of two ferromagnetic layers can be precisely controlled by inserting a specially designed magnetic metallic spacer layer between them. The coupling angle is controlled solely by the composition of the spacer layer. Moreover, the biquadratic coupling strength, responsible for noncollinear alignment, is larger than that of current materials. These properties allow for the fabrication and study of not yet realized magnetic structures that have the potential to improve existing spintronic devices.

Spacer layer thickness dependence of exchange coupling in Co-enriched Co-Mn-Si/Cr/Co-Mn-Si epitaxial trilayers

2011 ◽  
Vol 110 (11) ◽  
pp. 113901 ◽  
Author(s):  
S. Bosu ◽  
Y. Sakuraba ◽  
K. Saito ◽  
H. Wang ◽  
K. Takanashi
Keyword(s):  
Layer Thickness ◽  
Exchange Coupling ◽  
Thickness Dependence ◽  
Spacer Layer Thickness ◽  
Spacer Layer

Theory of Oscillatory Exchange Between Magnetic Layers Through a Nonmagnetic Transition–Metal Spacer

1991 ◽  
Vol 231 ◽  
Author(s):  
J. Mathon
Keyword(s):  
Transition Metal ◽  
General Theory ◽  
Fermi Surface ◽  
Temperature Dependence ◽  
Exchange Coupling ◽  
Asymptotic Decay ◽  
Close Analogy ◽  
Magnetic Layers ◽  
Spacer Layer

AbstractA general theory of oscillations in the exchange coupling between two transition metal ferromagnets separated by a nonmagnetic transition metal spacer is developed. A close analogy between oscillations in the exchange coupling and de Haas-van Alphen oscillations is established and exploited to show that the period, asymptotic decay, and temperature dependence of the oscillations are determined by properties of the d band Fermi surface in the spacer layer. The theory accounts qualitatively and even semiquantitatively for all the salient experimental features of the oscillations in the exchange coupling observed recently in Co/Ru, Co/Cr, and Fe/Cr superlattices.

Very strong antiferromagnetic interlayer exchange coupling with iridium spacer layer for perpendicular magnetic tunnel junctions

2017 ◽  
Vol 110 (9) ◽  
pp. 092406 ◽  
Author(s):  
Kay Yakushiji ◽  
Atsushi Sugihara ◽  
Akio Fukushima ◽  
Hitoshi Kubota ◽  
Shinji Yuasa
Keyword(s):  
Exchange Coupling ◽  
Tunnel Junctions ◽  
Magnetic Tunnel Junctions ◽  
Interlayer Exchange Coupling ◽  
Spacer Layer ◽  
Interlayer Exchange

Element-Selective Magnetic Imaging in Exchange-Coupled Systems by Magnetic Photoemission Microscopy

1998 ◽  
Vol 05 (06) ◽  
pp. 1241-1248 ◽  
Author(s):  
W. Kuch ◽  
R. Frömter ◽  
J. Gilles ◽  
D. Hartmann ◽  
Ch. Ziethen ◽  
...  
Keyword(s):  
Exchange Coupling ◽  
Magnetic Circular Dichroism ◽  
Magnetic Coupling ◽  
Interface Roughness ◽  
Coupled Systems ◽  
Magnetic Imaging ◽  
Spacer Layer ◽  
Elemental Sensitivity ◽  
Out Of Plane ◽  
Coupling Phenomena

We have used a photoemission microscope to obtain element-resolved magnetic contrast in stacked magnetic thin film systems. Magnetic information is thereby provided by X-ray magnetic circular dichroism. Elemental sensitivity, which is crucial for studying magnetic coupling phenomena in systems with several different layers, is achieved by tuning the energy of the illuminating photons to atomic absorption edges. We present measurements of a Ni-coated Co micropattern on Cu(001), and a wedged Co/Cr/Fe(001) sample. In the former sample the Ni magnetization is seen to follow the magnetization of the Co pattern, thereby changing from an out-of-plane easy axis in areas without underlying Co to in-plane on top of the Co microstructures. In the latter a reversal of the exchange coupling of the Co layer to the Fe magnetization is observed when the Cr layer thickness exceeds approximately two monolayers. A small net magnetic moment is also observed in the Cr spacer layer, which follows in sign the Co magnetization at the reversal of the exchange coupling. This finding is discussed in terms of interface roughness or interdiffusion.

Interlayer exchange coupling across Cu/Ti/Cu spacer layer

2003 ◽  
Vol 196 (1) ◽  
pp. 86-89 ◽  
Author(s):  
J. Dubowik ◽  
B. Szymański ◽  
F. Stobiecki ◽  
K. Röll
Keyword(s):  
Exchange Coupling ◽  
Interlayer Exchange Coupling ◽  
Spacer Layer ◽  
Interlayer Exchange
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