Magnetism and magnetic field reflector

Click For Summary
SUMMARY

The discussion focuses on effective methods to reflect, block, or neutralize magnetic fields, particularly emphasizing the use of hollow soft magnetic iron tubes to reduce magnetic field strength from 100 Gauss to approximately 1 Gauss. The geometry and direction of the magnetic field play crucial roles in the effectiveness of shielding. Participants highlight the importance of understanding the specifics of the unshielded field, including whether it is AC or DC, the volume requiring shielding, and the desired field strength within the shielded area. A physics-based design approach is recommended over the use of costly Mu-metal materials.

PREREQUISITES
  • Understanding of magnetic field concepts
  • Knowledge of AC and DC magnetic fields
  • Familiarity with soft magnetic materials
  • Basic principles of magnetic shielding design
NEXT STEPS
  • Research the properties and applications of soft magnetic iron tubes
  • Learn about the physics of magnetic field geometry
  • Study the differences between AC and DC magnetic fields
  • Explore cost-effective alternatives to Mu-metal for magnetic shielding
USEFUL FOR

Physicists, electrical engineers, and anyone involved in designing magnetic shielding solutions or studying magnetic field interactions.

sameev29
Messages
27
Reaction score
0
What can reflect,block or neutralize magnetism and magnetic field of a magnet?
 
Engineering news on Phys.org
Very often, just a hollow soft magnetic iron tube is sufficient to reduce the field from say 100 Gauss to about 1 Gauss, but the geometry and direction of the field is very important. Tell us details of the unshielded field, is it ac or dc, the volume you need to shield, and what field you need to achieve inside the shielded volume. It is usually much better and cheaper to approach the design from the physics standpoint than by buying expensive Mu-metal shielding material.

Bob S

[added] read this,

http://argus.phys.uregina.ca/gluex/DocDB/0008/000843/004/bshield.pdf

up to equation (15). There are some caveats to applying this result, so tell me about your application. RS
 
Last edited by a moderator:

Similar threads

Does Rolling a Magnetic Core on a Magnet Affect Its Properties?
  • · Replies 2 ·
Replies
2
Views
2K
Multipole ring magnet generator
  • · Replies 9 ·
Replies
9
Views
4K
AC gaussmeter in static magnetic field
  • · Replies 21 ·
Replies
21
Views
2K
Magnets with Halbach array in an AC generator
  • · Replies 6 ·
Replies
6
Views
3K
What Is the Combined Magnetic Force When Parallel Magnets Align?
  • · Replies 3 ·
Replies
3
Views
3K
Calculating the force that a permanent magnet exerts on a particle
  • · Replies 14 ·
Replies
14
Views
4K
What Causes the Non-Circular Distribution of Magnetic Fields in Steel Ducts?
  • · Replies 8 ·
Replies
8
Views
2K
How can I detect magnetic fields which are weaker than the Earth's?
  • · Replies 17 ·
Replies
17
Views
2K
Increasing magnetic field above the surface in a resonator
  • · Replies 1 ·
Replies
1
Views
955
COMSOL simulation of a 3D Ferrite Bar Numerical Model For Magnetic Flux
  • · Replies 5 ·
Replies
5
Views
4K