Magnetic Domains Observation from Bitter Patterns of NdFeB Alloy

Raphael Lemos; Kaio Sérgio T. de Souza; Fernanda A. Sampaio da Silva; Daniel Rodrigues; José Adilson de Castro; Marcos Flavio de Campos

doi:10.4028/www.scientific.net/MSF.802.569

Paper Titles

Influence of the Grain Size on the Dysprosium Diffusion in NdFeB Magnets
p.546

Frequency Characterization of Ferrite Beads in the Microwave Range for Nonlinear Applications
p.552

Relation between Initial Magnetization Curve and Grain Size of Nanocrystalline NdFeB Magnets
p.558

Coercivity Mechanism in Hard and Soft Sintered Magnetic Materials
p.563

Magnetic Domains Observation from Bitter Patterns of NdFeB Alloy
p.569

Feasibility Study for Feedstock Recycling on PIM Nd-Fe-B Permanent Magnets
p.574

A Simple Device for Measuring Losses in Soft Magnetic Materials
p.579

NdFeB Type Magnets Produced by Spark Plasma Sintering
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Thermal Analysis Investigation of NdFeB Bonded Magnets
p.590

HomeMaterials Science ForumMaterials Science Forum Vol. 802Magnetic Domains Observation from Bitter Patterns...

Magnetic Domains Observation from Bitter Patterns of NdFeB Alloy

Abstract:

The Bitter method is an adequate method for domains observation, and depends on careful metallographic preparation and also on a proper magnetic colloid solution. In this study, Bitter patterns were obtained for a Nd-Fe-B as-cast alloy. The Nd₂Fe₁₄B grains show strong anisotropy during growing, and are larger for the direction perpendicular to the easy magnetization axis. The equilibrium distance between domain walls allows an estimate of intrinsic parameters of ferromagnetic phases as the domain wall energy and the single domain particle size.

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Periodical:

Materials Science Forum (Volume 802)

Pages:

569-573

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.802.569

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Online since:

December 2014

Authors:

Raphael Lemos, Kaio Sérgio T. de Souza, Fernanda A. Sampaio da Silva, Daniel Rodrigues, José Adilson de Castro, Marcos Flavio de Campos

Keywords:

Bitter Method, Magnetic Domains, Magnets, NdFeB

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