Double magnetic switching, domain wall processes, and interfacial exchange coupling in an exchange-biased bilayer film

2005 ◽  
Vol 72 (5) ◽  
Author(s):  
Zhi-Hong Wang ◽  
G. Cristiani ◽  
H.-U. Habermeier ◽  
J. A. C. Bland
Keyword(s):  
Domain Wall ◽  
Exchange Coupling ◽  
Bilayer Film ◽  
Magnetic Switching ◽  
Switching Domain

scholarly journals The impact of number of repeats N on the interlayer exchange in $$[\text {Fe/MgO}]_{N} $$(001) superlattices

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Tobias Warnatz ◽  
Fridrik Magnus ◽  
Nanny Strandqvist ◽  
Sarah Sanz ◽  
Hasan Ali ◽  
...  
Keyword(s):  
Quantum Well ◽  
Exchange Coupling ◽  
Neutron Reflectometry ◽  
Interlayer Exchange Coupling ◽  
Magnetic Switching ◽  
Interlayer Exchange ◽  
Quantum Well States ◽  
The Impact ◽  
Polarized Neutron Reflectometry ◽  
Mgo Layers

AbstractThe strength of the interlayer exchange coupling in [Fe/MgO]$$_N$$ N (001) superlattices with 2 ≤ N ≤ 10 depends on the number of bilayer repeats (N). The exchange coupling is antiferromagnetic for all the investigated thicknesses while being nine times larger in a sample with N = 4 as compared to N = 2. The sequence of the magnetic switching in two of the samples (N = 4, N = 8) is determined using polarized neutron reflectometry. The outermost layers are shown to respond at the lowest fields, consistent with having the weakest interlayer exchange coupling. The results are consistent with the existence of quantum well states defined by the thickness of the Fe and the MgO layers as well as the number of repeats (N) in [Fe/MgO]$$ _{N}$$ N (001)superlattices.

Influence of exchange coupling on current-driven domain wall motion in a nanowire

2010 ◽  
Vol 322 (19) ◽  
pp. 2969-2972 ◽  
Author(s):  
Takashi Komine ◽  
Kota Takahashi ◽  
Hiroshi Murakami ◽  
Ryuji Sugita
Keyword(s):  
Domain Wall ◽  
Exchange Coupling ◽  
Wall Motion ◽  
Domain Wall Motion

Magnetic Structure of Nanowires and Magnetostatic Interaction

2010 ◽  
Vol 168-169 ◽  
pp. 269-272 ◽  
Author(s):  
A.A. Ivanov ◽  
V.A. Orlov ◽  
N.N. Podolsky
Keyword(s):  
Domain Wall ◽  
Numerical Simulations ◽  
Magnetic Structure ◽  
Domain Structure ◽  
Ground State ◽  
Exchange Coupling ◽  
Anisotropy Axis ◽  
Induced Anisotropy ◽  
Magnetostatic Interaction ◽  
Stable Domain

The ground state magnetization of nanowires built of ferromagnetic crystallites is considered taking into account the magnetostatic interaction. The criterion of formation of domains is found. The thickness of a domain wall is calculated analytically and the results are compared with the numerical simulations. We show that when the exchange coupling between crystallites is absent its role is played by magnetostatics that ensures the existence of stable domain structure. The direction of the induced anisotropy axis is shown to be determined by the shape of crystallites.

Domain-wall velocities of up to 750 m s−1 driven by exchange-coupling torque in synthetic antiferromagnets

2015 ◽  
Vol 10 (3) ◽  
pp. 221-226 ◽  
Author(s):  
See-Hun Yang ◽  
Kwang-Su Ryu ◽  
Stuart Parkin
Keyword(s):  
Domain Wall ◽  
Exchange Coupling

Interfacial Magnetoelectric Switching in Multiferroic Heterostructures

2014 ◽  
Vol 783-786 ◽  
pp. 1623-1627 ◽  
Author(s):  
Wolfgang Kleemann ◽  
Pavel Borisov ◽  
Xi Chen ◽  
Carolin Schmitz-Antoniak
Keyword(s):  
Data Processing ◽  
Electric Fields ◽  
Exchange Bias ◽  
Exchange Coupling ◽  
Transverse Magnetic ◽  
Electric Polarization ◽  
Surface Polarization ◽  
Magnetic Switching ◽  
Field Control ◽  
Multiferroic Heterostructures

Novel methods of switching magnetism with electric fields and vice versa, and aiming at magnetoelectric (ME) data processing are reported. First, the patented MERAM@ uses the electric field control of exchange bias via an epitaxial Cr2O3 layer and exchange coupling to a Pt/Co/Pt trilayer. It promises to crucially reduce Joule energy losses in RAM devices. Second, magnetic switching of the electric polarization by a transverse magnetic field in a 3-1 composite of a vertically poled BaTiO3 thick film embedding CoFe2O4 nanopillars produces a regular surface polarization pattern with rectangular symmetry. Its possible use for data processing is discussed.

scholarly journals Resonant Enhancement of Exchange Coupling for Voltage-Controlled Magnetic Switching

2020 ◽  
Vol 14 (3) ◽  
Author(s):  
Shehrin Sayed ◽  
Cheng-Hsiang Hsu ◽  
Niklas Roschewsky ◽  
See-Hun Yang ◽  
Sayeef Salahuddin
Keyword(s):  
Exchange Coupling ◽  
Resonant Enhancement ◽  
Magnetic Switching
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