Amorphous and nanocrystalline magnetic materials, as a kind of soft magnetic materials developed rapidly in recent years, have shown a wide range of applications in many fields, such as electric power, information, machinery and so on, because of their unique physical and chemical properties.

# Amorphous and Nanocrystalline Magnetics: Characteristics and Applications

 

## Introduction

 

Amorphous and nanocrystalline magnetic materials, as a kind of soft magnetic materials developed rapidly in recent years, have shown a wide range of applications in many fields, such as electric power, information, machinery and so on, because of their unique physical and chemical properties. This article will start from the characteristics of amorphous and nanocrystalline magnets to explore its application in different fields, in order to provide readers with a comprehensive and in-depth understanding.

 

## Characteristics of amorphous and nanocrystalline magnets

 

### High permeability

 

One of the greatest characteristics of amorphous and nanocrystalline magnetic materials is their high permeability. Compared with traditional magnetic materials, amorphous and nanocrystalline magnets show better performance in high frequency applications. This high permeability makes the application of amorphous nanocrystalline magnetic materials in high-frequency inductors and transformers particularly prominent, which can significantly improve the efficiency and performance of electrical equipment.

 

### Low hysteresis loss

 

Hysteresis loss is the loss of magnetic materials due to energy conversion during magnetization. Amorphous and nanocrystalline magnets have very low hysteresis loss during magnetization due to their unique amorphous microstructure. This feature helps to reduce heat loss and improve energy efficiency, making amorphous and nanocrystalline magnets have a wide range of applications in power transmission, power conversion and other fields.

 

### Excellent soft magnetic properties

 

Amorphous and nanocrystalline magnets have excellent soft magnetic properties, that is, less energy is consumed in the process of magnetization and demagnetization. This feature enables amorphous and nanocrystalline magnets to respond quickly to external magnetic fields and convert them into electrical energy, thermal energy or mechanical energy. Therefore, in power equipment such as power transformers, motors, and governors, the amorphous and nanocrystalline magnetic materials can significantly improve the operating efficiency of the equipment.

 

### Corrosion resistance, wear resistance and high strength

 

Amorphous and nanocrystalline magnets have excellent corrosion resistance, wear resistance, and high strength in addition to the above magnetic properties. These characteristics make the amorphous and nanocrystalline magnets maintain stable performance in harsh environments and broaden their application range. For example, in the field of oil and gas exploration, amorphous and nanocrystalline magnetic materials are used to assist the magnetic core part of sensors, workover devices, and magnetic flow meters.

 

## Application of amorphous and nanocrystalline magnetic materials

 

### Power Industry

 

In the power industry, amorphous and nanocrystalline magnets are widely used in power transformers, inductive components, motors, governors and so on. Especially in the field of high-power transformers, amorphous and nanocrystalline magnets effectively improve the efficiency of transformers due to their good permeability and low iron loss. For example, the thickness of the iron-based amorphous alloy strip is only about 0.03mm, which is widely used in the iron core of medium and low frequency transformers, such as distribution transformers, intermediate frequency transformers, high-power inductors, reactors, etc.

 

### Information field

 

In the field of information, the high permeability of amorphous and nanocrystalline magnets makes it widely used in ultrasonic equipment, digital transformers, power converters, signal processors and so on. Its high magnetic permeability can improve the working efficiency of the equipment, and the combination of superconducting and ferromagnetic properties also makes it widely used in high frequency electronic components. In addition, amorphous and nanocrystalline magnetic materials are also used in magnetic storage devices, such as magnetic disks and magnetic tapes, and their excellent magnetic composite properties greatly improve the data reading and writing speed.

 

### Mechanical Equipment

 

Amorphous and nanocrystalline magnets also have important applications in the field of mechanical equipment. Amorphous and nanocrystalline magnets have been widely used in high-precision robots and machine tool motors due to their excellent coercivity and saturation magnetic induction. For example, amorphous and nanocrystalline magnetic materials are widely used in mechanical equipment such as electric vehicle drivers to improve the operating efficiency and stability of the equipment.

 

### Other areas

 

In addition to the above fields, amorphous and nanocrystalline magnets have been widely used in energy, aerospace, rail transportation and other fields. In the field of energy, amorphous and nanocrystalline magnetic materials are used to manufacture solar cells, wind turbines and other equipment to improve the conversion efficiency and power density of the equipment. In the field of aerospace, amorphous and nanocrystalline magnets have become one of the key materials for manufacturing high-performance aircraft because of their high strength and high toughness.

 

## Conclusion

 

Amorphous and nanocrystalline magnets have shown broad application prospects in many fields because of their unique physical and chemical properties. With the continuous progress of science and technology and the continuous improvement of preparation technology, the performance of amorphous and nanocrystalline magnets will be further optimized and improved, and its application range will continue to expand. In the future, amorphous and nanocrystalline magnets are expected to play an important role in more fields and promote the rapid development of related industries.