What is the coercive force of disc magnets?

Yo! As a supplier of disc magnets, I get a ton of questions about these little but powerful things. One of the most frequently asked questions is about the coercive force of disc magnets. So, let's dig into it.

First off, what's coercive force anyway? Coercive force, often written as Hc, is a measure of the ability of a magnetic material to resist demagnetization. Think of it like a magnet's "stubbornness." A magnet with a high coercive force is like that super - determined person who doesn't easily change their mind. It takes a significant external magnetic field to reverse its magnetization.

For disc magnets, coercive force is crucial. Disc magnets are those circular, flat magnets that you can find in all sorts of applications. Here at our place, we've got all kinds of them, from tiny Disc Shaped Magnet to larger ones.

The coercive force of a disc magnet depends on several factors. The type of material it's made from is a biggie. We have different materials like neodymium, ferrite, and samarium - cobalt. Neodymium disc magnets, for example, are known for their high coercive force. They can hold their magnetic field really well even when they're placed near other magnets or in environments where there's a lot of magnetic interference.

Let's take a look at some of our popular products. The 4mm X 2mm Disc Magnet is a tiny but mighty one. Despite its small size, if it's made of neodymium, it has a pretty good coercive force. This makes it great for use in small electronic devices where you don't want the magnet to lose its magnetism easily. It can be used in things like sensors, small motors, and even some jewelry clasps.

Another one is the 6x2mm Disc Magnet. It's a bit larger, and usually, the larger the magnet, the more magnetic material there is, which can potentially increase its coercive force. These are often used in more heavy - duty applications, like in some industrial equipment or in more complex electronic assemblies.

Now, how do we measure the coercive force of these disc magnets? Well, it's not something you can just eyeball. Specialized equipment is used to measure the magnetic field strength required to reduce the magnetization of the magnet to zero. This measurement is done in units of oersted (Oe) or ampere per meter (A/m).

When you're choosing a disc magnet for your project, the coercive force should be one of the top considerations. If your application involves a lot of movement, vibration, or exposure to other magnetic fields, you'll want a magnet with a high coercive force. For example, in a motor that runs continuously, you don't want the magnets inside it to demagnetize over time. A high - coercivity disc magnet will ensure a longer - lasting and more reliable performance.

On the flip side, if your project doesn't require the magnet to maintain its magnetization under extreme conditions, you might be able to get away with a magnet with a lower coercive force. This can sometimes save you money, as magnets with higher coercive forces are often more expensive to manufacture.

We've seen all kinds of projects come through our doors that use disc magnets. From DIY hobbyists making small robotic toys to large - scale industrial manufacturers looking for magnets for their production lines. Every application has its own unique requirements when it comes to the coercive force of the disc magnets.

So, if you're in the market for disc magnets, keep in mind the importance of coercive force. Don't just go for the cheapest option without considering how well it'll hold up in your specific application. And if you're not sure which magnet is the best fit for your needs, reach out to us! We're here to help you make the right choice. Whether you need a high - coercivity magnet for a demanding industrial application or a more budget - friendly option for a simple DIY project, we've got you covered.

If you're interested in purchasing disc magnets, we'd love to talk to you about your requirements. We can offer you advice on the right coercive force for your project and provide you with high - quality disc magnets that meet your needs. Get in touch with us, and let's start a great business relationship.

References:

• Principles of Magnetism and Magnetic Materials by David Jiles
• Handbook of Magnetic Materials by Klaus H. J. Buschow