The Domain Structure of Die-Upset Anisotropic Magnet Based On Nd-(Fe, Co)-B Alloy

2011 ◽  
Vol 56 (1) ◽  
pp. 159-161 ◽  
Author(s):  
D. Płusa ◽  
M. Dośpial ◽  
D. Derewnicka-Krawczyńska ◽  
P. Wieczorek ◽  
U. Kotlarczyk
Keyword(s):  
Domain Structure ◽  
Magnetic Force Microscopy ◽  
Magnetic Force ◽  
Magnetic Domain ◽  
Magnetic Interaction ◽  
Dipolar Interaction ◽  
Vibrating Sample Magnetometer ◽  
Force Microscopy ◽  
Interaction Domains ◽  
Anisotropic Magnet

The Domain Structure of Die-Upset Anisotropic Magnet Based On Nd-(Fe, Co)-B Alloy The measurements of the recoil curves for the die-upset Nd-(Fe, Co)-B based magnets from different points on the magnetization and demagnetization curves have been carried out by means of the LakeShore vibrating sample magnetometer in an applied magnetic fields up to 2 T. From the recoil curves the so-called Wohlfarth's remanence relationship has been derived. From this it was deduced that the magnetic interaction existing between the magnet grains has a dipolar nature. The existence of the magnetic interaction has been confirmed by magnetic domain observations by using the magnetic force microscopy (MFM). In the area of interaction domains there is the fine scale magnetic contrast resulting from the dipolar interaction between neighboring grains.

Plate domain structure of sintered NdFeB magnets and dependence on compacting mode

2001 ◽  
Vol 16 (10) ◽  
pp. 2992-2995 ◽  
Author(s):  
Zhen Rong Zhang ◽  
Bao Shan Han ◽  
Ye Qing He ◽  
Shou Zeng Zhou
Keyword(s):  
Domain Structure ◽  
Applied Field ◽  
Magnetic Force Microscopy ◽  
Magnetic Force ◽  
Magnetic Domain ◽  
Nonmagnetic Metal ◽  
Isostatic Pressing ◽  
Force Microscopy ◽  
Die Pressing ◽  
Better Than

The alignment degree of sintered Nd–Fe–B magnets and its dependence on applied field and compacting mode were studied by magnetic force microscopy. By analyzing the magnetic force images to illustrate the magnetic-domain structure, an experimental method for quantitatively evaluating the alignment degree of sintered Nd–Fe–B magnets was given. The results show that if the compacting mode is the same, the alignment of magnets will be better as field increases. Under the same field, the alignment degree for rubber isostatic pressing with vibration is better than that for nonmagnetic metal die pressing. However, if the sample is compacted by rubber isostatic pressing without vibration, the alignment degree decreases significantly.

A Magnetic Force Microscopy Study of Magnetic Domain Structure in Maraging Steel

2013 ◽  
Vol 203-204 ◽  
pp. 315-318 ◽  
Author(s):  
Miroslaw Bramowicz ◽  
Slawomir Kulesza
Keyword(s):  
Numerical Analysis ◽  
Resonant Frequency ◽  
Domain Structure ◽  
Maraging Steel ◽  
Magnetic Force Microscopy ◽  
Magnetic Force ◽  
Magnetic Domain ◽  
Microscopy Study ◽  
Force Microscopy ◽  
Microscopy Method

This study presents the results of an analysis of the domain structure of supersaturated X2CoCrMoAl20-15-3 maraging steel. The analyses was carried out using the magnetic force microscopy method in a two pass mode. Obtained magnetic results were subjected to numerical analysis. The dimensions of spontaneously magnetized regions and their orientation were determined by analyzing the autocorrelation function of changes in the resonant frequency of the MFM probe. The use of fractal analysis was proposed to describe the domain structure.

scholarly journals Imaging of Magnetic Domain Structure in FeSi/Mn_{0.8}Zn_{0.2}Fe_2O_4 Composite using Magnetic Force Microscopy

2017 ◽  
Vol 131 (4) ◽  
pp. 714-716 ◽  
Author(s):  
M. Streckova ◽  
I. Batko ◽  
M. Batkova ◽  
R. Bures ◽  
M. Faberova ◽  
...  
Keyword(s):  
Domain Structure ◽  
Magnetic Force Microscopy ◽  
Magnetic Force ◽  
Magnetic Domain ◽  
Magnetic Domain Structure ◽  
Force Microscopy

Magnetic Domain Structure and Magnetic Reversal Process of (R,Zr)(Co,Cu,Fe)z Heterogeneous Nanocrystalline Alloys

2010 ◽  
Vol 168-169 ◽  
pp. 400-403 ◽  
Author(s):  
M.B. Lyakhova ◽  
E.M. Semenova ◽  
Yury G. Pastushenkov ◽  
A.G. Pastushenkov ◽  
V.I. Sinekop ◽  
...  
Keyword(s):  
Domain Structure ◽  
Magnetic Force Microscopy ◽  
Magnetic Force ◽  
Magnetic Domain ◽  
Nanocrystalline Alloys ◽  
Magnetic Domain Structure ◽  
Magnetic Reversal ◽  
Force Microscopy ◽  
Atomic Force ◽  
Mixed Mechanism

This work is devoted to the study of the magnetic domain structure (DS) in heterogeneous nanocrystalline alloys (R,Zr)(Co,Cu,Fe)z (R = Sm; z = 6.0-6.7). The methods of optical and atomic force microscopy were used to determine the parameters of micro- and nanostructure («cells») of the alloys. The method of magnetic force microscopy was used to obtain the images of the domain structure of these samples. A comparative analysis of the parameters of the domain and "cellular" structure of the alloys was performed. The dependence of the DS parameters on the parameters of the nanostructure is shown. The mixed mechanism of the magnetic reversal realized in these alloys is discussed.

Sign in / Sign up

Export Citation Format

Share Document