scholarly journals Influence of the dipolar interactions in the magnetization reversal asymmetry of hard–soft magnetic ribbons

2005 ◽  
Vol 97 (2) ◽  
pp. 023903 ◽  
Author(s):  
M. Rivas ◽  
J. A. García ◽  
M. Tejedor ◽  
E. Bertrán ◽  
J. G. Céspedes
Keyword(s):  
Magnetization Reversal ◽  
Dipolar Interactions ◽  
Soft Magnetic

scholarly journals Structure, Magnetic Properties and Magnetization Reversal Processes in Nanocrystalline Pr8Dy1Fe60Co7Mn6B14Zr1Ti3 Bulk Alloy

2019 ◽  
Vol 70 (11) ◽  
pp. 4086-4088
Keyword(s):  
Magnetic Properties ◽  
Magnetization Reversal ◽  
Exchange Interactions ◽  
Soft Magnetic ◽  
Bulk Alloy ◽  
Saturation Ratio ◽  
Pinning Mechanism ◽  
Strong Exchange ◽  
Xrd Studies ◽  
Bulk Alloys

The present paper presents results concerning on structure, magnetic properties and magnetization reversal processes in the as-cast Pr8Dy1Fe60Co7Mn6B14Zr1Ti3 alloy in the form of 1 mm plate. The XRD studies revealed coexistence of three phases dominant Pr2(Fe,Co)14B and minor á-Fe and Fe3B. The remanence-to-saturation ratio Jr/Js equaled 0.66 and indicated on existence of strong exchange interactions between hard and soft magnetic phases. The analysis of Mrev vs. Mirr dependences, the pinning mechanism was detected in studied alloy. Keywords: bulk alloys, magnetic properties, magnetization reversal processes

scholarly journals Micromagnetic Simulations of Chaotic Ferromagnetic Nanofiber Networks

Nanomaterials ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 738 ◽  
Author(s):  
Tomasz Blachowicz ◽  
Christoph Döpke ◽  
Andrea Ehrmann
Keyword(s):  
Polymer Blends ◽  
Magnetization Reversal ◽  
Research Area ◽  
Diameter Distribution ◽  
Spatial Distributions ◽  
Dipolar Interactions ◽  
Micromagnetic Simulations ◽  
Small Parts ◽  
First Time

Electrospinning can be used to create nanofibers with diameters of typically a few tens to a few hundred nanometers. While pure polymers are often electrospun, it is also possible to use polymer blends or to include nanoparticles. In this way, e.g., magnetic nanofiber networks can be created with a certain diameter distribution, random fiber orientations, and random crossing positions and angles. Here we present for the first time micromagnetic simulations of small parts of stochastically oriented nanofiber networks. Magnetization reversal mechanisms are investigated for different local spatial distributions; mutual influences of neighboring magnetic fibers due to dipolar interactions are depicted. This study serves as a base for the possible use of such stochastic nanofiber networks in the research area of neuro-inspired materials.

Magnetization reversal of hard/soft magnetic bilayer

2019 ◽  
Vol 785 ◽  
pp. 1253-1256 ◽  
Author(s):  
T.A. Taaev ◽  
K.Sh. Khizriev ◽  
A.K. Murtazaev
Keyword(s):  
Magnetization Reversal ◽  
Soft Magnetic

Magnetic Structure and Magnetization Reversal in Nanocomposite Pr2Fe14B/α-Fe Ribbons

2005 ◽  
Vol 475-479 ◽  
pp. 2127-2130
Author(s):  
Xiaoqian Bao ◽  
Mao Cai Zhang ◽  
Yi Qiao ◽  
Shouzeng Zhou
Keyword(s):  
Magnetization Reversal ◽  
Exchange Coupling ◽  
Melt Spinning ◽  
Magnetic Force ◽  
Permanent Magnets ◽  
Soft Magnetic ◽  
Force Microscopy ◽  
Interaction Domains ◽  
Strong Exchange ◽  
Pinning Field

Nanocomposite Pr7.5Dy1Fe71Co15Nb1B4.5 ribbons were prepared by melt-spinning and subsequent annealing. Interaction domains were imaged using magnetic force microscopy (MFM) because of strong exchange coupling between hard and soft magnetic grains. Coercivity was determined by exchange coupling pinning field. But the magnetization reversal of nanocomposite magnets were different from that of traditional single phase permanent magnets.

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