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

High-quality single crystal
with minimal variation in
Ga concentration

High and stable
magnetostriction
properties of 300ppm
through special post-processing.

High Processability
and Flexibility for
Various Shapes Beyond
Rectangular & Cylindrical

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

Fe-Ga magnetostrictive alloy single crystal is a key material for vibration power generation (energy harvesting) used in independent power supply for IoT.
We have established a technique for growing high-quality single crystals with minimal Ga concentration variation within the crystal by employing the Vertical Bridgman (VB) method.
It is possible to grow single crystals with rectangular prism shapes up to 66mm×66mm and cylindrical shapes up to φ52mm. The produced crystal has a high magnetostriction of approximately 300ppm and minimal variation in its magnetostriction value, demonstrating excellent properties as a magnetostrictive material for IoT vibration power generation devices.

Learn more: [What are Magnetostrictive Materials?]

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

Our magnetostrictive materials enable consistent magnetostrictive vibration energy harvesting, making them 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 crystal development product series.
We can process these single crystals into various sizes and shapes centered on sheet materials. Aiming to contribute to society with high-performance materials through open innovation with device manufacturers and universities.

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Applications and potential of magnetostrictive vibration power generation. Independent power supply for various IoT systems.

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

Materials with magnetostrictive effects, where magnetic moments align in the direction of the external magnetic field, causing slight changes in shape.
Fe-Ga magnetostrictive alloy is one such iron-based magnetostrictive material, combining significant magnetostrictive effects and high mechanical properties. It is attracting attention for vibration power generation applications. Additionally, it can be applied as magnetostrictive sensors or actuators.

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

In what applications are magnetostrictive materials used?

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 IoT has been attracting attention, and the use of magnetostrictive materials as a material for vibration power generation devices is expected to expand.

What is vibration power generation?

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

What is Fe-Ga alloy?

Fe-Ga alloy is one of the iron-based magnetostrictive materials, which is attracting attention for vibration power generation applications because of its high magnetostriction coefficient (about 300ppm) and high mechanical properties. We have established a technology to fabricate high-quality Fe-Ga Magnetostrictive Alloy Single Crystal with low variation in magnetostrictive properties.