scholarly journals Giant Vertical Magnetization Shift Caused by Field-Induced Ferromagnetic Spin Reconfiguration in Ni50Mn36Ga14 Alloy

Materials ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 4701
Author(s):  
Fanghua Tian ◽  
Yin Zhang ◽  
Chao Zhou ◽  
Qizhong Zhao ◽  
Zhonghai Yu ◽  
...  
Keyword(s):  
Temperature Dependence ◽  
Field Dependence ◽  
Exchange Bias ◽  
Training Effect ◽  
Bias Effect ◽  
Exchange Bias Effect ◽  
Recording Technology ◽  
Practical Applications ◽  
Ultrahigh Density ◽  
And Training

Vertical magnetization shift (VMS) is a special type of exchange bias effect that may lead to a revolution in future ultrahigh-density magnetic recording technology. However, there are very few reports focusing on the performance of VMS due to the unclear mechanism. In this paper, a giant vertical magnetization shift (ME) of 6.34 emu/g is reported in the Ni50Mn36Ga14 alloy. The VMS can be attributed to small ferromagnetic ordered regions formed by spin reconfiguration after field cooling, which are embedded in an antiferromagnetic matrix. The strong cooling-field dependence, temperature dependence, and training effect all corroborate the presence of spin reconfiguration and its role in the VMS. This work can enrich VMS research and increase its potential in practical applications as well.

Observation of giant exchange bias effect in Ni-Mn-Ti all-d-metal Heusler alloy

2021 ◽  
Author(s):  
Saheli Samanta ◽  
Subrata Ghosh ◽  
Kalyan Mandal
Keyword(s):  
Exchange Bias ◽  
Heusler Alloy ◽  
Magnetic Relaxation ◽  
Training Effect ◽  
Magnetic Memory ◽  
Relaxation Processes ◽  
Bias Effect ◽  
Exchange Bias Effect ◽  
Intrinsic Nature ◽  
Unidirectional Anisotropy

Abstract We report a giant exchange bias (EB) field of about 3.68 KOe during field cooled process in all-d-metal Ni40(FeCo)4Mn36Ti20 Heusler alloy. The study of magnetic memory effect and isothermal magnetic relaxation processes suggest that the giant EB field arises due to the possible coexistence of antiferromagnetic (AFM) and ferromagnetic (FM) phase exchange interaction in the studied system at temperatures below 35 K. Furthermore, the temperature and cooling field dependence of EB effect are analyzed which are related to the change in unidirectional anisotropy at FM/AFM interface. The study of a well-established training effect confirms the intrinsic nature of the observed EB behavior. This result will open up a new way towards the development of EB materials considering all-d-metal Heusler alloy systems.

scholarly journals Cooling-field dependence of exchange bias effect in La0.45Sr0.55MnO3 nanoparticles

2014 ◽  
Vol 116 (4) ◽  
pp. 043913 ◽  
Author(s):  
A. Rostamnejadi ◽  
M. Venkatesan ◽  
P. Kameli ◽  
H. Salamati ◽  
J. M. D. Coey
Keyword(s):  
Field Dependence ◽  
Exchange Bias ◽  
Bias Effect ◽  
Exchange Bias Effect

Antisite-disorder driven large exchange bias effect in phase separated La1.5Ca0.5CoMnO6 double perovskite

2017 ◽  
Vol 428 ◽  
pp. 86-91 ◽  
Author(s):  
R.C. Sahoo ◽  
D. Paladhi ◽  
Papri Dasgupta ◽  
A. Poddar ◽  
Ripandeep Singh ◽  
...  
Keyword(s):  
Exchange Bias ◽  
Double Perovskite ◽  
Bias Effect ◽  
Exchange Bias Effect ◽  
Antisite Disorder

Analysis of exchange bias effect of NiO+NiFe2O4 composites

2010 ◽  
Vol 322 (1) ◽  
pp. 79-83 ◽  
Author(s):  
J.H. He ◽  
S.L. Yuan ◽  
S.Y. Yin ◽  
K.L. Liu ◽  
P. Li ◽  
...  
Keyword(s):  
Exchange Bias ◽  
Bias Effect ◽  
Exchange Bias Effect

Exchange bias effect in nickel zinc ferrite–mesoporous silica nanocomposites

2013 ◽  
Vol 332 ◽  
pp. 98-102 ◽  
Author(s):  
Shilpi Banerjee ◽  
Partha Hajra ◽  
Mykanth Reddy Mada ◽  
Asim Bhaumik ◽  
Sri Bandyopadhyay ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Exchange Bias ◽  
Zinc Ferrite ◽  
Bias Effect ◽  
Exchange Bias Effect ◽  
Silica Nanocomposites ◽  
Nickel Zinc
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