Suppression of Barkhausen noise due to exchange biasing in Fe-FeMn bilalayers

2013 ◽  
Author(s):  
Arnab Roy ◽  
P. S. Anil Kumar
Keyword(s):  
Barkhausen Noise ◽  
Exchange Biasing

FRACTAL DIMENSION ANALYSIS OF THE BARKHAUSEN NOISE IN Fe-Si AND PERMALLOY

1988 ◽  
Vol 49 (C8) ◽  
pp. C8-1929-C8-1930
Author(s):  
H. Yamazaki ◽  
Y. Iwamoto ◽  
H. Maruyama
Keyword(s):  
Fractal Dimension ◽  
Barkhausen Noise ◽  
Dimension Analysis ◽  
Fractal Dimension Analysis

RELATION BETWEEN MECHANICAL BARKHAUSEN NOISE AND MAGNETOMECHANICAL INTERNAL FRICTION

1987 ◽  
Vol 48 (C8) ◽  
pp. C8-407-C8-412 ◽  
Author(s):  
B. AUGUSTYNIAK ◽  
A. VANNES
Keyword(s):  
Internal Friction ◽  
Barkhausen Noise

Exchange-Biasing in a Dinuclear Dysprosium(III) Single-Molecule Magnet with a Large Energy Barrier for Magnetization Reversal

2019 ◽  
Author(s):  
Tian Han ◽  
Marcus J. Giansiracusa ◽  
Zi-Han Li ◽  
You-Song Ding ◽  
Nicholas F. Chilton ◽  
...  
Keyword(s):  
Single Molecule ◽  
Magnetization Reversal ◽  
Energy Barrier ◽  
Magnetic Hysteresis ◽  
Large Energy ◽  
Magnetic Studies ◽  
Bridging Ligands ◽  
Single Molecule Magnet ◽  
Exchange Biasing

A dichlorido-bridged dinuclear dysprosium(III) single-molecule magnet [Dy<sub>2</sub>L<sub>2</sub>(<i>µ</i>-Cl)<sub>2</sub>(THF)<sub>2</sub>] has been made using a diamine-bis(phenolate) ligand, H<sub>2</sub>L. Magnetic studies show an energy barrier for magnetization reversal (<i>U</i><sub>eff</sub>) around 1000 K. Exchange-biasing effect is clearly seen in magnetic hysteresis with steps up to 4 K. <i>Ab</i> initio calculations exclude the possibility of pure dipolar origin of this effect leading to the conclusion that super-exchange <i>via</i> the chloride bridging ligands is important.

scholarly journals Time-Response-Histogram-Based Feature of Magnetic Barkhausen Noise for Material Characterization Considering Influences of Grain and Grain Boundary under In Situ Tensile Test

Sensors ◽  
2021 ◽  
Vol 21 (7) ◽  
pp. 2350
Author(s):  
Jia Liu ◽  
Guiyun Tian ◽  
Bin Gao ◽  
Kun Zeng ◽  
Yongbing Xu ◽  
...  
Keyword(s):  
Grain Boundary ◽  
Tensile Stress ◽  
Material Properties ◽  
Ferromagnetic Material ◽  
Silicon Steel ◽  
Time Response ◽  
Barkhausen Noise ◽  
Time Interval ◽  
Magnetic Barkhausen Noise

Stress is the crucial factor of ferromagnetic material failure origin. However, the nondestructive test methods to analyze the ferromagnetic material properties’ inhomogeneity on the microscopic scale with stress have not been obtained so far. In this study, magnetic Barkhausen noise (MBN) signals on different silicon steel sheet locations under in situ tensile tests were detected by a high-spatial-resolution magnetic probe. The domain-wall (DW) motion, grain, and grain boundary were detected using a magneto-optical Kerr (MOKE) image. The time characteristic of DW motion and MBN signals on different locations was varied during elastic deformation. Therefore, a time-response histogram is proposed in this work to show different DW motions inside the grain and around the grain boundary under low tensile stress. In order to separate the variation of magnetic properties affected by the grain and grain boundary under low tensile stress corresponding to MBN excitation, time-division was carried out to extract the root-mean-square (RMS), mean, and peak in the optimized time interval. The time-response histogram of MBN evaluated the silicon steel sheet’s inhomogeneous material properties, and provided a theoretical and experimental reference for ferromagnetic material properties under stress.

Barkhausen noise and thermoelectric power applied to study microstructural evolutions in metallic alloys

2001 ◽  
Vol 98 (2) ◽  
pp. 201-213 ◽  
Author(s):  
X. Kléber ◽  
R. Borrelly ◽  
A. Vincent
Keyword(s):  
Thermoelectric Power ◽  
Metallic Alloys ◽  
Barkhausen Noise

Kit demonstrates Barkhausen noise

2011 ◽  
Vol 46 (6) ◽  
pp. 651-653
Author(s):  
Mark Harrison
Keyword(s):  
Barkhausen Noise
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