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Product Information

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Magnetic Parts
- Amorphous magnetic parts
- Magnetic materials for cryogenic regenerator matrices
- Rare-earth cobalt magnets
Amorphous magnetic parts
Last resort to make advanced high-frequency circuits

Amorphous ribbon
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Outline
Amorphous alloys, with a non-crystalline structure, have a variety of characteristic properties and excel in magnetic properties.
Toshiba Materials manufactures a cobalt-based amorphous alloy. We take advantage of the excellent magnetic properties of the alloy in high-frequency circuits and merchandize it in the field of magnetic parts for electronics.
Advantages
Excellent magnetic properties in high-frequency circuits.
- Low loss
- High magnetic permeability (high inductance)
- High rectangularity (saturability)
FAQ
FAQ on amorphous magnetic parts
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Magnetic materials for cryogenic regenerator matrices
Magnetic regenerator material -Guide material to the ultra-low-temperature world-

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Outline
Magnetic regenerator material is a rare-earth metallic compound, and has large specific heat in the region of ultra-low temperature. Conventionally, lead was used for this purpose with insufficient performance because the specific heat of lead drops abruptly in the working region. Our material maintains sufficient specific heat under 4 K without liquid helium.
Advantages
- Our material is an environmentally friendly product because it is a substitute for lead.
- Our material has a large change in specific heat that is produced by magnetic phase transformation under 15 K.
- Our material is spherical-shaped powder, whose diameter is 100 to 300 μm on average, which reduces loss in gas pressure.
- Our spherical-shaped powder material is free from deformation or disintegration even after a long period of service.
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Applications
Ultra-low-temperature refrigerator for superconductivity devices
- Gifford McMahon (GM) refrigerator
- Pulse-tube refrigerator
Example of superconductive facilities
- MRI
- Magnetically suspended vehicle
- Cryopumps
- Superconductive filters for communication facilities
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Rare-earth cobalt magnets
TOSREX® Most reliable magnets used under high temperature

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Outline
Rare-earth cobalt magnets (TOSREX®) can be used at high temperature because they have a higher Curie point and stable magnetic properties. We offer various types of magnets in a series including those with high magnetic flux density and those with high coercive force. We also offer cost-effective magnets.
Advantages
High heat resistance
- Curie point 780 860 °C
- Temperature coefficient of residual magnetic flux density -0.036% / °C
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Applications
- Magnet couplings
- Electric motors
- Magnets for sputtering equipment
- Actuators
- Automobile magnets (Antilock brake system (ABS), ignition magnets, etc.)
- Assembly parts, magnetic circuit design
- Magnetization system (Magnetization power source design, Magnetization yoke design and manufacturing)
FAQ
FAQ on rare-earth cobalt magnets
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