Exchange bias, training effect, hysteretic behavior of angular dependence, and rotational hysteresis loss in NiFe/FeMn bilayer: Effect of antiferromagnet layer thickness

2009 ◽  
Vol 105 (5) ◽  
pp. 053913 ◽  
Author(s):  
T. R. Gao ◽  
Z. Shi ◽  
S. M. Zhou ◽  
R. Chantrell ◽  
P. Asselin ◽  
...  
Keyword(s):  
Layer Thickness ◽  
Angular Dependence ◽  
Exchange Bias ◽  
Hysteresis Loss ◽  
Hysteretic Behavior ◽  
Training Effect ◽  
Rotational Hysteresis

scholarly journals Hysteretic Behavior of Angular Dependence of Exchange Bias inFeNi/FeMnBilayers

2007 ◽  
Vol 99 (5) ◽  
Author(s):  
T. R. Gao ◽  
D. Z. Yang ◽  
S. M. Zhou ◽  
R. Chantrell ◽  
P. Asselin ◽  
...  
Keyword(s):  
Angular Dependence ◽  
Exchange Bias ◽  
Hysteretic Behavior

Exchange Bias and Training Effect in Polycrystalline Antiferromagnetic/Ferromagnetic Bilayers

2002 ◽  
Vol 746 ◽  
Author(s):  
Markus Kirschner ◽  
Dieter Suess ◽  
Thomas Schrefl ◽  
Josef Fidler
Keyword(s):  
Layer Thickness ◽  
Exchange Bias ◽  
Ferromagnetic Layer ◽  
Bias Field ◽  
Training Effect ◽  
Hysteresis Cycle ◽  
Weak Exchange ◽  
Antiferromagnetic Layer ◽  
20 Nm ◽  
And Training

ABSTRACTExchange bias and training effect are simulated for IrMn/NiFe bilayers. As a function of the thickness of the antiferromagnet the bias field shows a maximum for a thickness of 22 nm. For decreasing antiferromagnetic thickness the domain wall energy approaches zero. For large thicknesses the high anisotropy energy hinders switching of the antiferromagnetic grains resulting in weak bias. Starting from the field cooled state as initial configuration a bias field of about 8 mT is obtained assuming a antiferromagnetic layer thickness of 20 nm, a ferromagnetic layer thickness of 10 nm, and a grain size of 10 nm. The next hysteresis cycle shows a reduction of the bias field by about 65%. Exchange bias and training effect in fully compensated antiferromagnet/ferromagnet bilayers are explained with a simple micromagnetic model. The model assumes no defects except for grain boundaries, and coupling is due to spin flop at a perfect interface. The simulations show that a weak exchange interaction between randomly oriented antiferromagnetic grains and spin flop coupling at a perfectly compensated interface are sufficient to support exchange bias.

Hysteretic behavior of angular dependence of exchange bias in FeNi∕FeMn bilayers: A new signature

2008 ◽  
Vol 103 (7) ◽  
pp. 07E926 ◽  
Author(s):  
Z. Shi ◽  
T. R. Gao ◽  
S. M. Zhou ◽  
R. Chantrell ◽  
P. Asselin ◽  
...  
Keyword(s):  
Angular Dependence ◽  
Exchange Bias ◽  
Hysteretic Behavior

Training Effect and Hysteretic Behaviour of Angular Dependence of Exchange Bias in Co/IrMn Bilayers

2009 ◽  
Vol 26 (4) ◽  
pp. 047501 ◽  
Author(s):  
Zhang Jing ◽  
Du Jun ◽  
Bai Xiao-Jun ◽  
You Biao ◽  
Zhang Wei ◽  
...  
Keyword(s):  
Angular Dependence ◽  
Exchange Bias ◽  
Training Effect ◽  
Hysteretic Behaviour

Improvement of Representation of Rotational Hysteresis Loss by Isotropic Vector Play Model

2017 ◽  
Vol 137 (3) ◽  
pp. 216-222
Author(s):  
Junji Kitao ◽  
Yasuhito Takahashi ◽  
Koji Fujiwara ◽  
Akira Ahagon ◽  
Tetsuji Matsuo ◽  
...  
Keyword(s):  
Hysteresis Loss ◽  
Rotational Hysteresis ◽  
Isotropic Vector

Angular dependence of exchange bias in Mn80Ir20/Co60Fe20B20 bilayers

2011 ◽  
Vol 109 (7) ◽  
pp. 07D704 ◽  
Author(s):  
J. Yang ◽  
S. Cardoso ◽  
P. P. Freitas ◽  
T. Devolder ◽  
M. Ruehrig
Keyword(s):  
Angular Dependence ◽  
Exchange Bias

Complex angular dependence of exchange bias on (001) epitaxial NiO-Co bilayers

2005 ◽  
Vol 45 (2) ◽  
pp. 175-179 ◽  
Author(s):  
S. Dubourg ◽  
J. F. Bobo ◽  
B. Warot ◽  
E. Snoeck ◽  
J. C. Ousset
Keyword(s):  
Angular Dependence ◽  
Exchange Bias
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