INTRODUCTION

YMP-6118 Curie Temperature Experiment is an experimental instrument specially used to measure the Curie point of magnetic materials. For ferromagnetic materials, due to the existence of magnetic domains, hysteresis will occur under the action of an external alternating magnetic field. The hysteresis loop is the main manifestation of hysteresis. If the ferromagnetic material is heated to a certain temperature, due to the intensification of thermal motion in the metal lattice and the destruction of the magnetic domain, the ferromagnetic material will transform into a paramagnetic material, and the hysteresis phenomenon will disappear. This transition temperature of ferromagnetic materials is called the Curie point. There are two coils N1 and N2 on the ring-shaped ferromagnetic material in this experiment. N1 is the excitation coil. By passing an alternating current through it, it can provide a magnetic field to magnetize the ring sample. After placing the ring-shaped sample with a coil in a temperature-controlled temperature control device to change the temperature of the sample, the disappearance of the ferromagnetism can be judged by observing whether the hysteresis loop of the sample disappears. Or by measuring the curve of the induced electromotive force of the secondary integrating circuit as it changes with temperature, we can infer whether the ferromagnetism disappears and thereby determine the Curie temperature of the sample.

EXPERIMENTS

• Understand the principles of hysteresis loops and magnetization curves of magnetic materials.

• Understand the microscopic mechanism of the transformation of ferromagnetic materials from ferromagnetic to paramagnetic.

• Learn the principles and methods of measuring the Curie temperature.

• Determine the Curie temperature of ferromagnetic samples.

• Understand the principles of hysteresis loops and magnetization curves of magnetic materials.

FEATURES

• Adopt high stability and accuracy DDS signal generator

• Use durable digital encoder to adjust frequency

• Provide a variety of experimental samples

• The temperature control system uses semiconductor refrigeration chips for heating and cooling, which can quickly heat up and cool down

• The open structure provides multiple universal temperature jacks, which can be used by users to measure a variety of temperature sensors with excellent scalability

  
  

TYPICAL DATA