Origin of the exchange bias training effects in magnetically coupled soft/hard synthetic bilayers at low temperature

2015 ◽  
Vol 459 ◽  
pp. 74-78 ◽  
Author(s):  
Orhan Yalçın ◽  
Şahin Ünlüer ◽  
Sinan Kazan ◽  
Recep Şahingöz
Keyword(s):  
Low Temperature ◽  
Exchange Bias ◽  
Training Effects

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.

Monte Carlo simulation of exchange bias and training effects in ferromagnetic/antiferromagnetic bilayers with different Néel temperatures

2014 ◽  
Vol 550 ◽  
pp. 608-615 ◽  
Author(s):  
Yong Hu ◽  
Feng Shi ◽  
Xiaoling Wang ◽  
Ning Jia ◽  
Guozhen Wu ◽  
...  
Keyword(s):  
Monte Carlo Simulation ◽  
Monte Carlo ◽  
Exchange Bias ◽  
Training Effects ◽  
And Training

scholarly journals Ferromagnetic excess moments and apparent exchange bias in FeF2 single crystals

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
D. C. Joshi ◽  
P. Nordblad ◽  
R. Mathieu
Keyword(s):  
Low Temperature ◽  
Single Crystals ◽  
Exchange Bias ◽  
Hysteresis Loops ◽  
Temperature Hysteresis ◽  
Remnant Magnetization ◽  
Antiferromagnetic Structure ◽  
Antiferromagnetic Layer

AbstractThe anisotropic antiferromagnet FeF2 has been extensively used as an antiferromagnetic layer to induce exchange bias effects in ferromagnetic/antiferromagnetic bilayers and heterostructures. In this work, an apparent exchange bias occurring in the low temperature hysteresis loops of FeF2 single crystals is investigated. A detailed investigation of the hysteresis and remnant magnetization indicates that the observation of an apparent exchange bias in FeF2 stems from an intrinsic excess moment associated with a distortion of the antiferromagnetic structure of piezomagnetic origin.

Low temperature exchange bias in [DyFe2/YFe2] superlattices: effect of the thermo-magnetic preparation

2009 ◽  
Vol 21 (23) ◽  
pp. 236002 ◽  
Author(s):  
K Dumesnil ◽  
C Dufour ◽  
S Fernandez ◽  
M Oudich ◽  
A Avisou ◽  
...  
Keyword(s):  
Low Temperature ◽  
Exchange Bias ◽  
Temperature Exchange

Exchange bias in sputtered FeNi/FeMn systems: Effect of short low-temperature heat treatments

2016 ◽  
Vol 402 ◽  
pp. 49-54 ◽  
Author(s):  
Peter Savin ◽  
Jorge Guzmán ◽  
Vladimir Lepalovskij ◽  
Andrey Svalov ◽  
Galina Kurlyandskaya ◽  
...  
Keyword(s):  
Low Temperature ◽  
Exchange Bias ◽  
Heat Treatments ◽  
Temperature Heat
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