I. Significance to materials research and development

1. 1In-depth understanding of material properties

By accurately measuring the magnetic parameters of amorphous nanocrystalline materials, such as magnetization curves, hysteresis loops, magnetic permeability, coercive force, etc., we can gain an in-depth understanding of the intrinsic magnetic nature of the materials. This helps researchers understand the magnetic properties of materials. For example, the saturation magnetization of a material reflects the maximum magnetic flux that the material can carry, the magnetic permeability reflects the material's ability to conduct magnetic fields, and the coercivity represents the material's resistance to demagnetization. capabilities, etc. These properties are the basis for material application.

2.Guide material design and optimization

Based on the measured magnetic data, guidance can be provided for material design and optimization. For example, when developing new amorphous nanocrystalline magnetic materials, materials with specific magnetic properties can be obtained by adjusting the material composition, preparation process and other factors according to the magnetic performance requirements of different application scenarios. For example, in order to improve the performance of materials in high-frequency applications, it may be necessary to reduce the coercive force of the material to reduce magnetic losses; and for applications that require high magnetic storage capacity, the saturation magnetization of the material may need to be increased.

3. Evaluate material quality and stability

Magnetic measurements can be used as an effective means to evaluate the quality and stability of amorphous nanocrystalline materials. Factors such as impurities, defects or inhomogeneities in materials may have a significant impact on magnetism. Magnetic measurements can detect these problems to control the quality of materials. At the same time, measuring the changes in the magnetic properties of materials under different environmental conditions (such as temperature, humidity, magnetic field, etc.) can evaluate the stability of the material and provide a basis for the storage and use conditions of the material.

II. Expansion of application fields:

1. Power electronics field

In power electronic devices such as transformers and inductors, the magnetic properties of amorphous nanocrystalline materials are crucial. Accurately measuring its magnetism can optimize device design, improve power conversion efficiency, and reduce energy loss. For example, choosing amorphous nanocrystalline materials with suitable magnetic permeability and low coercivity to make transformer cores can reduce the hysteresis loss and eddy current loss of the core, improve the efficiency and power density of the transformer, and achieve energy conservation and emission reduction.

2. Electronic information field

For magnetic storage devices (such as hard drives, magnetic tapes, etc.), the high magnetic permeability and good magnetic stability of amorphous nanocrystalline materials help increase storage density and data reading and writing speeds. Screening and optimizing materials through magnetic measurements can meet the needs of electronic information equipment for high-performance magnetic storage media. In addition, in high-frequency electronic devices (such as radio frequency filters, antennas, etc.), magnetic measurement results of amorphous nanocrystalline materials can guide material selection and device design to achieve better signal transmission and processing performance.

3. Sensor field

Magnetic sensors based on amorphous nanocrystalline materials are widely used in industrial automation, automotive electronics, smart homes and other fields. Magnetic measurements can help determine the magnetic response of materials under different operating conditions, thereby improving sensor sensitivity, accuracy and reliability. For example, in automobile tire pressure monitoring systems, magnetic changes in amorphous nanocrystalline materials are used to detect changes in tire pressure. Accurate magnetic measurement helps improve the sensor's ability to sense small pressure changes and ensure driving safety.

4. New energy field

In equipment such as motors, generators, and solar photovoltaic inverters for new energy vehicles, the excellent magnetic properties of amorphous nanocrystalline materials can improve energy conversion efficiency and system performance. Evaluating and selecting appropriate materials through magnetic measurements can help optimize the design and operation of new energy systems. For example, using amorphous nanocrystalline materials with high saturation magnetization and low coercivity in motors can improve the output power and efficiency of the motor while reducing the size and weight of the motor.

III.Significance to the value of academic research

Provide experimental data support for the study of magnetic physics theory and help verify and improve related magnetic theoretical models. Through precise measurement and in-depth analysis of the magnetism of amorphous nanocrystalline materials, new magnetic phenomena and laws can be discovered and promote the development of magnetic physics. For example, studying the magnetic changes of amorphous nanocrystalline materials at different temperatures and magnetic field strengths can help reveal the magnetic phase transition mechanism, spin dynamics and other microphysical processes of the material, and provide a theoretical basis for the development of new magnetic functional materials and devices.