Mu-metal English permalloy) is a soft-magnetic nickel iron alloy (approx. 75-80% nickel) of high magnetic permeability, which is used for the screen of magnetic fields. If Mu-metal is bent or deformed, it should again be glowed, in order to receive by healing completely lattice defects the high permeability.

Mumetall gives it in the form of sheet metals begun from a thickness from 0.5 mm to 5.0 mm in standard masses, as well as in addition in slab mould. It is a registered registered trade mark of the company VAC Vacuumschmelze, Hanau.

Characteristics

| components 

| saturation magnetization 

| resistance 

| MR coefficient 

| temperature dependence 

Production

The alloy is warmed up to above the temperature (200-400"°C). Afterwards it is again cooled down. The temperature range is thereby with approx. 250"°C for several hours. At the same time to specify a magnetic field put on around the preferential axle (magnetization axle of the individual atoms in the material). The field strength put on is in the mT-range.

Areas of application

• As magnetoresitives element with non removable disk heads. The resistance of the element can be affected by change of the surrounded magnetic field. (See hall effect)

Articles in category "MU-metal"

We found here 32 articles.

Related Websites

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• About the Mu-Metal
  At room temperature if you surround a region with mu-metal any external magnetic ... Mu metal's main characteristic is that it is very magnetically soft ...


• Definition of MuMetal
  Glossary of metal industry terminology and definitions from your About.com Guide.


• Magnetic Field Shielding Materials
  Another format of MuMetal


• Mu-metal - Wikipedia, the free encyclopedia
  The high permeability makes mu-metal very effective at screening static or low-frequency ... Mu-metal is used to shield equipment from magnetic fields. ...


• mu-metal: Information From Answers.com
  mu-metal Mu-metal is a nickel - iron alloy (77% nickel , 15% iron , plus copper and molybdenum ) that has a very high magnetic permeability.


• MuShield Magnetic Shielding / MuMetal Home Page, the leader in ...
  MuShield Magnetic Shielding. A leader in MuMetal Suppliers and information about magnetic shield permeability properties.