The strongest magnetic material is the Sintered Neodymium Magnets, which is available commercially today. The chemical formula is Nd2Fe14B as it is largely made of alloy of boron, iron and neodymium. Sintered NdFeB neodymium magnet in small size offers high magnetic energy product with high coercive forces.
Examples of applications include MRI devices, loudspeakers, permanent magnet motors, wind power generators, magnetic separators, and computer hard drive.
A magnet, electric current or traveling charged particle have a magnet around them, which is an area having a magnetic force that can act on electric current, traveling charged particle or another magnet. When around the magnet, you drop iron filings this field is quite evident and along the lines of this field, you will see a certain pattern forming.
There are instances when an object has to be protected from this field when a magnetic field is used in a practical application, and this is done by a procedure called shielding. Altering the lines of magnet, a shielding material is used.
Therefore, in its literal meaning, shielding is not to be taken as lines of the Industrial Magnet are not stopped or blocked, and only their path is altered. For field lines to travel, the shielding material is better conductor as compared to air and offers a low energy pathway.
Shielding is not a tough method; however, to get the best results, one has to consider various factors. Firstly, sharp corners should not be there in the shape of the shield, as to make sharp turns, lines of the magnet will be resistant. Therefore, most effective are shields in spherical and cylindrical shapes.
The shield size is the next aspect to consider. To more lines of the magnet, a large shield will be exposed obviously; however to travel through the shield, these lines will not be induced. Usually, for shielding the space that is beyond two to three feet from the magnetic source, a shield measuring six foot square would be sufficient in a practical home setting.
With layering the material and increasing its thickness, the efficacy of the shield is maximized. Lastly, a difference will also be made by proper alignment of the shield surface. The orientation of magnetic field is affected by the way the shield is placed as the shield's surface is encountered.
To maximum of the edge area is exposed to the field, is aligning shield surface to be parallel as much as possible is the best placement.
Magnetic materials
According to the magnetic field’s strength, the shielding material will also differ. For strong fields, materials like Magnet Shield, Paper Shield and Grion are quite effective, and they provide high saturation and good permeability.
Good shielding materials are MetGlass, Magnetic Shielding Foils, and Mag-Stop Plates, in applications having weak to moderate fields. Finement and CobalTex are effective in high frequency applications.
Conclusion
On shielding the field, before you start your project consider all factors, determine the level of attenuation required, and measure the magnetic field of magnets from Magnet Manufacturer.
The strongest magnetic material is Sintered neodymium magnet that is commercially available today.
The chemical formula is Nd2Fe14B and it is largely made of alloy of boron, iron and neodymium.Sintered NdFeB neodymium magnet from Magnet Manufacturer in small size exhibits high magnetic energy product with high coercive forces.Sticking magnets together just means that you are creating a stronger magnetic field by combining the power of two magnets.
The combined magnets’ powers will double definitely but to how much power can be acquired by doubling, there are limitations.Know what neodymium magnets areIn commercial applications, these magnets are most commonly used and from a special mix of boron, iron and neodymium alloys they are made.
In areas where strong are required like cordless phones etc these magnets are usually used.
As they have higher coercivity and higher energy, Neodymium magnets are preferred.Why the power does get doubled?Using two Neodymium Magnets on the whole can increase the power of the magnet.
For example, this magnet will eventually be working as a 10mm diameter by 4mm powered version by adding another with 10mm diameter and 2mm width and using a magnet with 10mm diameter and 2mm width.In arrange of commercial applications, this property is successfully used and it has proved to be very effective.
