Principle and Application Fields of Magnetic Field Probe Station

Magnetic field probe stations are instruments used to measure the strength and direction of magnetic fields. Their principles and structural compositions are relatively complex. Below, we will delve into the principles, structural components, and application fields of magnetic field probe stations.

I. Principle of Magnetic Field Probe Station

The principle of the magnetic field probe station is based on magnetic field sensors and measurement techniques. A magnetic field sensor is a device that can sense magnetic fields and convert them into electrical signals. Common magnetic field sensors include Hall sensors and magnetoresistive sensors. When placed in a magnetic field to be measured, the sensor is influenced by the magnetic field and generates a corresponding electrical signal output. By measuring this electrical signal, one can infer the strength and direction of the magnetic field.

In a magnetic field probe station, the magnetic field sensor is typically fixed on a bracket and precisely controlled to measure in three-dimensional space. By measuring the strength and direction of the magnetic field at different positions, a three-dimensional distribution map of the magnetic field can be plotted, revealing its spatial characteristics.

II. Structural Components of Magnetic Field Probe Station

Magnetic field probe stations mainly consist of the following components:

Magnetic Field Components: Including one-dimensional, two-dimensional, and three-dimensional coils and electromagnets, used to generate the desired magnetic field environment. These coils and electromagnets can be cooled using air or water cooling structures to ensure stable, long-term operation. Additionally, to protect equipment safety, overheating protection devices are equipped.
Probe Station Platform Components: Serve as the supporting platform for the entire device, used to install and fix magnetic field sensors, probes, and other components.
Probe Holder and Probe Components: The probe holder is used to fix the probe, which then contacts the sample under test to transmit electrical signals.
Microscope Components: Used to observe the microstructure and morphology of the sample under test, aiding in precise positioning and testing.
Optical Platform Components: Provide a stable optical environment, ensuring the normal operation of optical equipment such as microscopes.
Displacement Stage Components: Used to achieve two-dimensional horizontal movement and 360-degree rotation of the sample, facilitating sample installation and testing.
Test Line Components: Used to connect various components, transmitting electrical signals and data.
External Test Instruments: Used to display and record measurement data, facilitating user analysis and processing.
III. Application Fields of Magnetic Field Probe Station

Magnetic field probe stations have a wide range of applications in scientific research and industrial applications, mainly including the following aspects:

Astronomical Research: Used to study interstellar magnetic fields and the magnetic fields of stars and galaxies in the universe, contributing to understanding the formation and evolution of celestial bodies.
Geophysical Research: Used to measure the distribution and intensity changes of the Earth's magnetic field, exploring the interrelationships between the Earth's magnetic field and geological, meteorological, and spatial environmental phenomena. This provides important support for earthquake prediction, mineral exploration, and geophysical prospecting.
Materials Science Research: By measuring magnetic field sensors, changes in small magnetic moments within materials can be captured, enabling research on the magnetic properties, magnetic phase transitions, and applications of magnetic materials. Additionally, magnetic field probe stations can be used in fields such as biological molecules, organic synthetic chemistry, and nanomaterials.
Semiconductor Industry: Primarily used in the CP testing phase after wafer processing and before packaging processes, ensuring more stable signal transmission from the wafer surface to precision instruments for more accurate data testing and measurement. Additionally, magnetic field probe stations can be used to study spintronic devices, magnetic sensors, and more.
In conclusion, the magnetic field probe station is a powerful instrument that plays a crucial role in scientific research and technological innovation. With continuous advancements in technology and the expansion of application fields, the magnetic field probe station will find applications in more domains, making significant contributions to the advancement of science and the development of human society.