Tuning exchange bias through zero field cooling from different remanent states above blocking temperature in Ni50 Mn36 Sb14 alloy

2012 ◽  
Vol 6 (11) ◽  
pp. 448-450 ◽  
Author(s):  
R. L. Wang ◽  
L. S. Xu ◽  
Z. G. Sun ◽  
V. V. Marchenkov ◽  
H. B. Xiao ◽  
...  
Keyword(s):  
Exchange Bias ◽  
Blocking Temperature ◽  
Zero Field ◽  
Zero Field Cooling ◽  
Field Cooling

Exchange bias induced after zero-field cooling in antiperovskite compounds Ga1-x NMn3+x

2014 ◽  
Vol 252 (3) ◽  
pp. 582-588 ◽  
Author(s):  
J. C. Lin ◽  
P. Tong ◽  
D. P. Cui ◽  
C. Yang ◽  
S. Lin ◽  
...  
Keyword(s):  
Exchange Bias ◽  
Zero Field ◽  
Zero Field Cooling ◽  
Field Cooling

Microstructural and Magnetic Properties on Graphitic Encapsulated Ni Nanocrystals and Pure Ni Nanoparticles with NiO Layer

1999 ◽  
Vol 581 ◽  
Author(s):  
Xiangcheng Suns ◽  
M. Jose Yacamana ◽  
F. Morales
Keyword(s):  
Magnetic Properties ◽  
Room Temperature ◽  
Nickel Nanoparticles ◽  
Blocking Temperature ◽  
Morphological Properties ◽  
Zero Field ◽  
Ni Nanoparticles ◽  
Ferromagnetic Interaction ◽  
Zero Field Cooling ◽  
Field Cooling

ABSTRACTTwo kinds of different nickel nanoparticles with distinct morphological properties, Ni(C) and Ni(O), are studied. Magnetization measurements for the assembly of two kinds of Ni nanoparticles show, a larger coercivity and remanence as well as the deviation between the zero field cooling (ZFC) and the field cooling (FC) magnetization have been observed in the Ni(O) particles. This deviation may be explained as a typical cluster glass-like behavior due to ferromagnetic interaction among the assembly of Ni(O) particles. However, Ni(C) particles exhibit superparamagnetism at room temperature. The average blocking temperature (TB) is determined to around 115K. We also observe gradual decrease in saturation magnetization, which is attributed to the nanocrystalline nature of the encapsulated particles.

Unusual Positive Exchange Bias after Zero-Field Cooling at Room Temperature in the Co-CoO film Composed of Amorphous Co+CoO and Crystallized Co/CoO

2021 ◽  
pp. 129631
Author(s):  
Fanghua Tian ◽  
Jiale Guo ◽  
Qizhong Zhao ◽  
Kaili Li ◽  
Kaiyan Cao ◽  
...  
Keyword(s):  
Exchange Bias ◽  
Room Temperature ◽  
Zero Field ◽  
Zero Field Cooling ◽  
Field Cooling

scholarly journals Zero-field cooling exchange bias induced by spin metastable state in MnNiGa system

2021 ◽  
Vol 51 (6) ◽  
pp. 067514
Author(s):  
Jie LI ◽  
Lin GAO ◽  
JiaoJiao DENG ◽  
Yi WANG ◽  
DeWei ZHAO ◽  
...  
Keyword(s):  
Metastable State ◽  
Exchange Bias ◽  
Zero Field ◽  
Zero Field Cooling ◽  
Field Cooling

scholarly journals Large exchange bias obtainable through zero-field cooling from an unmagnetized state in Ni-Mn-Sn alloys

2012 ◽  
Vol 111 (4) ◽  
pp. 043912 ◽  
Author(s):  
B. M. Wang ◽  
Y. Liu ◽  
B. Xia ◽  
P. Ren ◽  
L. Wang
Keyword(s):  
Exchange Bias ◽  
Zero Field ◽  
Zero Field Cooling ◽  
Field Cooling

scholarly journals Spontaneous Zero-Field Cooling Exchange Bias in Ni–Co–Mn–Sn Metamagnetic Heusler Sputtered Film

Nanomaterials ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 2188
Author(s):  
Vasileios Alexandrakis ◽  
Iván Rodríguez-Aseguinolaza ◽  
Dimitrios Anastasakos-Paraskevopoulos ◽  
Jose Manuel Barandiarán ◽  
Volodymyr Chernenko ◽  
...  
Keyword(s):  
Exchange Bias ◽  
Ac Susceptibility ◽  
Heusler Alloys ◽  
Exchange Interactions ◽  
Careful Study ◽  
Zero Field ◽  
Magnetic Clusters ◽  
Magnetocaloric Materials ◽  
Zero Field Cooling ◽  
Field Cooling

Metamagnetic off-stoichiometric Heusler alloys are actively being investigated because of their great potential as magnetocaloric materials. These properties are intimately related to the nanoscale homogeneity of their magnetic properties, mainly due to a strong influence of the nature of the exchange interactions between Mn atoms on the magnetism of the alloys. In this work, a spontaneous exchange bias phenomenon on a Ni–Co–Mn–Sn metamagnetic Heusler sputtered film is presented and studied in detail. More particularly, a series of DC magnetization curves measured as a function of the temperature demonstrates that the system exhibits canonical spin glass-like features. After a careful study of the field-cooling and zero-field-cooling curves measured on this system, the existence of magnetic inhomogeneities is inferred, as a consequence of the competition between ferromagnetic and antiferromagnetic exchange interactions between Mn atoms. Further AC susceptibility measurements on this system demonstrate that the underlying exchange bias phenomenon can be attributed to a magnetic clusters model based on superferromagnetic-like interactions present in the film. These findings suggest that the spontaneous exchange bias exhibited by the studied system is a consequence of the formation of this superferromagnetic-like state.

scholarly journals Особенности релаксации остаточной намагниченности антиферромагнитных наночастиц на примере ферригидрита

2020 ◽  
Vol 62 (7) ◽  
pp. 1043
Author(s):  
Д.А. Балаев ◽  
А.А. Красиков ◽  
А.Д. Балаев ◽  
С.В. Столяр ◽  
В.П. Ладыгина ◽  
...  
Keyword(s):  
Exchange Bias ◽  
Exchange Coupling ◽  
Remanent Magnetization ◽  
Zero Field ◽  
Bias Effect ◽  
Exchange Bias Effect ◽  
Magnetization Relaxation ◽  
Potential Barriers ◽  
Zero Field Cooling ◽  
Field Cooling

In this work, we studied the relaxation of the remanent magnetization of antiferromagnetically ordered ferrihydrite nanoparticles under the conditions of realization of the exchange bias effect for these systems. Magnetization relaxation is characterized by a logarithmic dependence on time, which is typical for thermo-activation processes of the hopping of the magnetic moment of particles through potential barriers caused by magnetic anisotropy. The energy of the barriers obtained from processing the data on relaxation of the remanent magnetization (under the conditions of field cooling) significantly exceeds that for ordinary conditions (zero field cooling). The observed difference indicates the possibility of using the residual magnetization relaxation process to analyze the mechanisms responsible for the effect of exchange bias in antiferromagnetic nanoparticles and obtain the parameters characterizing the exchange coupling of magnetic subsystems in such objects.

scholarly journals Large Exchange Bias after Zero-Field Cooling from an Unmagnetized State

2011 ◽  
Vol 106 (7) ◽  
Author(s):  
B. M. Wang ◽  
Y. Liu ◽  
P. Ren ◽  
B. Xia ◽  
K. B. Ruan ◽  
...  
Keyword(s):  
Exchange Bias ◽  
Zero Field ◽  
Zero Field Cooling ◽  
Field Cooling

Giant zero-field cooling exchange-bias-like behavior in antiperovskite Mn3Co0.61Mn0.39N compound

2019 ◽  
Vol 3 (2) ◽  
Author(s):  
Ying Sun ◽  
Pengwei Hu ◽  
Kewen Shi ◽  
Hui Wu ◽  
Sihao Deng ◽  
...  
Keyword(s):  
Exchange Bias ◽  
Zero Field ◽  
Zero Field Cooling ◽  
Field Cooling
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