- #1
ashare
- 3
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I am in search of an electromagnet which has high magnetic remanence (or retentivity) even when the current through the electromagnet is zero. Can someone provide information about such a material?
Really? Do you want micrometer-sized electromagnets?ashare said:The smaller the better.
An electromagnet with high remanence is a type of electromagnet that retains a high level of magnetism even when the external magnetic field is removed. This is due to the use of materials with high magnetic permeability, such as iron or steel, in the core of the electromagnet.
An electromagnet with high remanence differs from a regular electromagnet in that it has a stronger magnetic field and can retain its magnetism for a longer period of time. This makes it more suitable for applications that require a strong and long-lasting magnetic field, such as in electric motors or generators.
An electromagnet with high remanence can be used in a variety of applications, including electric motors, generators, MRI machines, and magnetic separators. It is also commonly used in research and development for its strong and persistent magnetic field.
The remanence of an electromagnet is typically measured by the strength of its residual magnetic field after the external magnetic field is removed. This can be measured using a gaussmeter, which detects the strength of a magnetic field in units of gauss or tesla.
One advantage of using an electromagnet with high remanence is its ability to produce a strong and persistent magnetic field, which is necessary for many industrial and scientific applications. Additionally, these electromagnets can be turned on and off easily by controlling the electric current, making them more versatile and efficient than permanent magnets.