scholarly journals Computer Simulation of Exchange Bias Field at the Ferromagnetic-Antiferromagnetic Boundary

2021 ◽  
Vol 2096 (1) ◽  
pp. 012003
Author(s):  
S V Belim
Keyword(s):  
Magnetic Field ◽  
Computer Simulation ◽  
External Magnetic Field ◽  
Exchange Bias ◽  
Cluster Algorithm ◽  
Bias Field ◽  
Exchange Bias Field ◽  
Antiferromagnetic Ordering ◽  
Inverse Effect ◽  
Nonlinear Increase

Abstract This paper presents computer simulation results for a bilayer system with ferromagnetic and antiferromagnetic films. The dependence of the exchange bias field on the external magnetic field for this system is calculated. The Heisenberg model and the Wolf cluster algorithm are used for calculations. The reason for the appearance the bias field is the interaction between spins at the films interface. An increase the external magnetic field leads to a nonlinear increase the bias field. There are two reasons for nonlinearity. First, the external magnetic field suppresses antiferromagnetic ordering. Second, an external magnetic field-ordered ferromagnetic has an inverse effect on the antiferromagnetic film.

scholarly journals Size dependence of the exchange bias field in NiO/Ni nanostructures

2000 ◽  
Vol 77 (23) ◽  
pp. 3815-3817 ◽  
Author(s):  
M. Fraune ◽  
U. Rüdiger ◽  
G. Güntherodt ◽  
S. Cardoso ◽  
P. Freitas
Keyword(s):  
Exchange Bias ◽  
Size Dependence ◽  
Bias Field ◽  
Exchange Bias Field

Exchange Bias Properties in Bulk Ni45Co5Mn38Sn12 Heusler Alloy

2014 ◽  
Vol 875-877 ◽  
pp. 272-276 ◽  
Author(s):  
Chao Jing ◽  
Ye Jun Yang ◽  
Dong Hua Yu ◽  
Zhe Li ◽  
Xiao Long Wang ◽  
...  
Keyword(s):  
Hysteresis Loop ◽  
Exchange Bias ◽  
Heusler Alloy ◽  
Magnetic Hysteresis ◽  
Hysteresis Loops ◽  
Bias Field ◽  
Magnetic Hysteresis Loop ◽  
Zero Field ◽  
Co Substitution ◽  
Exchange Bias Field

We report the exchange bias properties in the bulk Ni45Co5Mn38Sn12quaternary Heusler alloy. The ferromagnetic (FM) –antiferromagnetic (AFM) interactions get reinforced after the Co substitution for Ni in the Ni-Mn-Sn alloy, which increase the exchange bias field (HE). A maximum shift in hysteresis loops of 306 Oe was observed in the 10 kOe field cooled sample. The origin of this large exchange bias field has been discussed. Magnetic hysteresis loop obtained in the zero field cooled (ZFC) mode shows double-shifted loop, and the reason of this phenomenon has been explained in detail.

Ferromagnetic resonance study of the exchange bias field in NiFe∕FeMn∕NiFe trilayers

2006 ◽  
Vol 99 (8) ◽  
pp. 08C108 ◽  
Author(s):  
V. P. Nascimento ◽  
E. Baggio Saitovitch ◽  
F. Pelegrini ◽  
L. C. Figueiredo ◽  
A. Biondo ◽  
...  
Keyword(s):  
Ferromagnetic Resonance ◽  
Exchange Bias ◽  
Bias Field ◽  
Exchange Bias Field

Enhancement of exchange bias field in top-pinned FeMn/Py bilayers with Ta/Cu hybrid underlayers

2013 ◽  
Vol 114 (7) ◽  
pp. 073908 ◽  
Author(s):  
Ki-Yeon Kim ◽  
Hyeok-Cheol Choi ◽  
Sin-Yong Jo ◽  
Chun-Yeol You
Keyword(s):  
Exchange Bias ◽  
Bias Field ◽  
Exchange Bias Field

scholarly journals Thermal exchange bias field drift in field cooled Mn83Ir17/Co70Fe30 thin films after 10 keV He ion bombardment

2011 ◽  
Vol 109 (2) ◽  
pp. 023910 ◽  
Author(s):  
Arno Ehresmann ◽  
Christoph Schmidt ◽  
Tanja Weis ◽  
Dieter Engel
Keyword(s):  
Thin Films ◽  
Exchange Bias ◽  
Ion Bombardment ◽  
Bias Field ◽  
Thermal Exchange ◽  
Exchange Bias Field ◽  
Field Drift

Growth of giant magnetoresistive spin valves with strong exchange bias field

1998 ◽  
Vol 34 (4) ◽  
pp. 867-869 ◽  
Author(s):  
G. Choe ◽  
A. Tsoukatos ◽  
S. Gupta
Keyword(s):  
Exchange Bias ◽  
Bias Field ◽  
Spin Valves ◽  
Exchange Bias Field ◽  
Strong Exchange

The Influnence of the Amplitude and Frequency of Sweeped Magnetic Field on the Exchange Bias and Coercivity for Ferromagnetic / Antiferromagnetic Films: Monte Carlo Simulation

2011 ◽  
Vol 694 ◽  
pp. 538-542
Author(s):  
Wen Ting Zheng ◽  
Li Qin Jiang ◽  
Zhi Gao Huang
Keyword(s):  
Magnetic Field ◽  
Monte Carlo Simulation ◽  
Monte Carlo ◽  
Relaxation Time ◽  
Monte Carlo Method ◽  
External Magnetic Field ◽  
Low Temperature ◽  
Exchange Bias

The influnence of the amplitude (H0) and frequency of sweeped magnetic field on the exchange bias He and coercivity Hc for ferromagnetic/ antiferromagnetic films has been simulated with Monte Carlo method. In a cycle, the sweeped frequency is inversely proportional to Monte Carlo steps (MCSs). It is observed that, for smaller MCSs, the values of He and the blocking tempreture Tb reduce evidently with increasing MCSs; for larger MCSs, the values of He and Tb decrease gently with increasing MCSs. It is also found the values of He and Tb decrease obviously with increasing values of H0 (HN0). However, on the contrary, the value of Hc increases with increasing values of H0 (HN0). At low temperature and little HN0, the asymmetric loop may appear, which is attributed to the competition between the relaxation time and the period of the external magnetic field. Moreover, the symmetry of the loops influences evidently the values of He and Hc.

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