Fe-Ga Magnetostrictive Alloy Single Crystal
(R&D)

The Fe-Ga magnetostrictive alloy single crystals offer the following features:

High-Quality Single Crystal
Minimizes variation in
Ga concentration

Stable Magnetostriction at 300 ppm
Achieved through special post-processing

High Processability
and Flexibility for
Available in shapes beyond
rectangular and cylindrical

Note: These values are representative of our development products. For more specific product details, please inquire.

Fe-Ga magnetostrictive alloy single crystals are a key material for vibration power generation (energy harvesting) that powers IoT sensors, as well as for actuators and sensors. Using the Vertical Bridgman (VB) method, we grow high-quality single crystals with minimal variation in Ga concentration.
We can grow them as rectangular prisms up to 66 mm × 66 mm and cylinders up to φ52 mm. These crystals reach a high magnetostriction of about 300 ppm with very little variation, giving them excellent properties for vibration-power-harvesting devices.

Learn more: [What are Magnetostrictive Materials?]

Superior Properties as Magnetostrictive Materials for
Vibration Energy Harvesting Devices in IoT

Because our magnetostrictive materials enable consistent vibration energy harvesting, they are suitable for use as standalone power sources in maintenance-free wireless sensor networks. We aim to develop products that contribute to society through collaboration with device manufacturers and universities.

Sumitomo Metal Mining's Fe-Ga magnetostrictive alloy single crystals can be processed into various sizes and shapes, mainly sheet materials.
Sumitomo Metal Mining works with device manufacturers and universities to advance high-performance materials through open innovation.

For detailed product information and specifications, download the data sheet below.

Magnetostrictive vibration power generation offers many applications and potential uses. For example, the crystals can serve as an independent power supply for the following IoT systems:

• Infrastructure monitoring
• Disaster prediction and prevention
• Livestock industry
• Mobility
• Logistics management
• Plant maintenance

In materials with magnetostrictive effects, magnetic moments align with the external magnetic field, causing slight changes in shape. The Fe-Ga magnetostrictive alloy single crystal is an iron-based magnetostrictive material that combines a strong magnetostrictive effect with high mechanical strength.
It is drawing attention for vibration power generation, and it also works in magnetostrictive sensors and actuators.

Reference: Vibration Power Generation Research Laboratory,Kanazawa University
— Magnetostrictive Vibration Power Generation Device (V-GENERATOR)

In what applications are magnetostrictive materials used?

A: Magnetostrictive materials are used in actuators, sensors, and power generation devices. In recent years, the use of vibration power generation as a micro power source for the IoT has been attracting attention, and the use of magnetostrictive materials in vibration power generation devices is expected to expand.

What is vibration power generation?

A: Vibration power generation is a technology that generates energy from vibration by using the piezoelectric effect, the electromagnetic induction effect, the electrostatic induction effect, and the inverse magnetostriction effect. This technology is attracting attention as a micro power source for the IoT.
Our Fe-Ga magnetostrictive alloy single crystals are characterized by low variation in magnetostrictive properties. They exhibit excellent characteristics as magnetostrictive materials for vibration power generation devices that utilize the inverse magnetostriction effect.

What is Fe-Ga alloy?

A: The Fe-Ga magnetostrictive alloy single crystal is an iron-based magnetostrictive material. It is drawing attention for vibration power generation thanks to its high magnetostriction coefficient (about 300 ppm) and strong mechanical properties. We have established technology to produce high-quality Fe-Ga magnetostrictive single crystals with little variation in magnetostrictive properties.