 |
Magnetoresistance
Effect |
 |
|
|
When a magnetic
field is applied in a direction perpendicular to the InSb plate
surface, the resistance will be raised. This is called the
magnetoresistance effect, and depends on the electron mobility of the
material. |
|
 How to Calculate the Magnetoresistance Effect |
|
 |
|
| Magnetoresistance Effect Models |
|
|
| <Current mode under
non-magnetic field> |
<Current mode under
magnetic field> |
|
 |
 |
|
- If magnetic flux (magnetic field) is not applied, the
current flows straight through the InSb plate. However, if magnetic
flux is applied, a Lorentz force proportional to the magnetic flux
density will deflect the current path.
- As the current path is deflected, the current flows
through the plate for a longer distance, causing the resistance to be
increased.
|
|
| Lorentz force (F) = qV x B |
| q |
: |
Electric charge (Coulombs) |
| V |
: |
Rate vector (m/s) |
| B |
: |
Magnetic flux density (Wb/m2) |
|
|
|
|
"When charged
particles travel through a magnetic flux, a force proportional to the
traveling rate and magnetic flux density is applied to the particles in
a direction perpendicular to both the rate vector and direction of the
magnetic flux." |
|
|
