SUMMARY

YMP-6110 is for the university teaching of the Giant Magnetoresistance (GMR) Effect and its applications. GMR Effect is a phenomenon in which the resistivity of a magnetic material varies significantly in applied external magnetic fields ofdifferent magnitudes. It is a quantum mechanical effect arising from the thin magnetic film structure, in which thin layers ofalternating ferromagnetic and nonferromagnetic materials stack on top of each other. When the magnetic moments of theferromagnetic layers are parallel, the spin-related scattering of carriers is minimized, and the material resistance is minimal. When the magnetic moments are antiparallel, the material resistance is maximal. YMP-6110 contains four experimentalunits: the GMR basic characteristics unit, GMR sensor measuring current unit, GMR sensor measuring angular unit, andGMR sensor reading magnetic card unit.

APPLICATIONS

Familiarize the principle of the GMR effect.

Measure the Magnetoelectric (ME) conversion characteristics curve of the GMR analog sensor.

Measure the magnetoresistive characteristics curve of GMR.

Measure the ME conversion characteristics of GMR digital sensors.

Study the calibration and calculate the sensitivity of GMR sensors.

Map the magnetic field distribution of solenoids with a GMR sensor.

Measure the wire current with a GMR sensor.

Measure the angular displacement of gears with a GMR sensorand familiarize its principles.

Familiarize the principles of recording and writing a magnetic card.

FEATURES

• Modular experimental setup

  The experimental equipment consists of 4 modules：

  1、GMR basic characteristics unit

  2、GMR sensor measuring current unit

  3、GMR sensor measuring angular unit

  4、GMR sensor reading magnetic card unit

• Abundant experimental content

  There were 8 quantitatively measurable experiments：

  1、GMR Sensor Characteristic Measurement

  2、GMR Sensor Sensitivity

  3、GMR Magnetic Field Distribution

  4、GMR Digit Sensor Characteristic Measurement

  5、GMR Characteristic Measurement

  6、GMR Measuring Wire Current

  7、GMR Senor Measuring Angular

  8、GMR Sensor Measuring Digital Signal

• Universal experimental power supply

  This experiment uses 1 DC adjustable voltage source, 1 DC adjustable constant current source, 1 tap adjustable voltmeter and 1 tap adjustable ammeter, which has strong versatility and simple operation.

• Expandable to digital experiments

  Digital experiment: the instrument can be equipped with 2-way data acquisition interface and voltage sensor, which can be upgraded to a computer-based digital data acquisition and analysis experiment system.

EXPERIMENTS

Experiment 1：GMR Sensor Characteristic Measurement

Experiment 2：GMR   Sensor Sensitivity

Experiment 3：GMR Magnetic Field Distribution

Experiment 4：GMR Digit Sensor Characteristic Measurement

Experiment 5：GMR Characteristic Measurement

Experiment 6：GMR Measuring Wire Current

Experiment 7：GMR   Senor Measuring Angular

Experiment 8：GMR Sensor Measuring Digital Signal