ppt on Hall effect

1. NAME: ARPITA BANERJEE
DEPT.: ECE
YEAR: 2ND
MAKAUT ROLL: 23000318026
PPT ON HALL EFFECT

2. INTRODUCTION
• This effect discovered by Edwin Hall is the
production of a voltage difference across an
electrical conductor, transverse to an electric
current in the conductor and a magnetic field
perpendicular to the current.

3. DEFINATION
• The buildup of the charges at the sides of the
sample will eventually balance the magnetic
influence, resulting in a measurable voltage
difference between the two sides of the
conductor. This is called the Hall Effect.

4. HALL EFFECT COEFFICIENT
The unit of RH is expressed as m3/C. This concludes
that the type of charge carrier and its density can be
estimated from the sign and the value of Hall co-
efficient RH. It can be obtained by studying the
variation of VH as a function of I for a given B.
The above equation also concludes that Hall effect
differentiates between positive charges moving in one
direction and negative charges moving in the opposite.

5. APPLICATIONS
• The measurement of large magnetic fields on
the order of a Tesla in most of the
magnetometers such as vibrating sample
magnetometer, squid magnetometer is often
done by making use of the Hall effect.
• the Hall effect has been used in portable
electronics

6. PLANAR HALL EFFECT
SENSOR:
• Planar Hall's Sensor is based on the planar hall
effect of ferromagnetic materials. It measures
the change in anisotropic magnetoresistance
caused by an external magnetic field in the
Hall geometry.