Neodymium Magnet vs Ferrite Magnet: What is the Difference

Neodymium Magnet Vs Ferrite Magnet

Deciding whether to choose neodymium magnet vs ferrite magnet can be an uphill task.

However, knowing the difference between these two magnets can simplify the whole process.

For that reason, this guide will compare the two magnets side-by-side for a clear understanding.

Let’s dive right in:

Magnetic Features or Properties to Compare Neodymium Magnet Ferrite Magnets
Chemical composition
  • It consists of boron, neodymium, and iron mainly referred to as Nd2 Fe14 B
  • They are made from ferrite compounds which are mainly iron oxide (Fe2O3)
  • Their chemical composition is SrO-6(Fe2O3)
Cost
  • More expensive than ferrite magnets
  • More affordable
Magnetic strength (comparing magnets of the same size)
  • Stronger magnetic strength than Ferritic magnets.
  • The magnetic strength varies from 1.4 tesla
  • Although the magnetic strength is high, it is lower than neodymium magnets

 

Required space
  • Best choice where space is limited but high magnetic strength is required.
  • As a result, it is easier to miniaturize components
  • May require a larger space, but the magnetic strength is lower
Price Fluctuations
  • Fluctuates since it is made from rare earth metals
  • Stable price since the magnet is not made from rare earth metals
Remanence
  • Very high than
  • Slightly lower
Working temperature
  • At temperatures greater than 80 degrees Celsius, neodymium will begin to lose its magnetic properties
  • It implies they have low Curie temperature (Tc).
  • Additionally, the temperature characteristics are also poor
  • Working temperature ranges between -40 and 250 degrees Celsius
  • They have high curie temperature (Tc)
Resistance to Corrosion
  • Not resistant to chemicals, therefore may not be suitable for outdoor use without proper protection mechanism.
  • Exhibit excellent resistance to corrosion more so by chemicals. Generally, it is a perfect choice for most outdoor applications.
Resistance to breakage
  • Easily breaks
  • Can resist breakage
Ability to retain magnetic properties
  • Can retain magnetic properties for a long time.
  • They can retain magnetic properties for a long time.
Decoration applications
  • Due to their silver colors, these magnets can be adapted to most decorative applications
  • Not suitable for decorative applications due to their dark gray color.
  • Most of these magnets are not easily coated.
Coating
  • Requires coating since oxidation can quickly erode the surface.
  • Passivation is usually the best surface treatment.
  • The surface does not require coating
Ability to withstand external magnetic field (Coercivity)
  • Very high compared to Ferrite Magnets
  • Comparatively low compared to neodymium
Application
  • Suitable where there are weight and space constraints
  • Applications include motors, audio devices, lifting equipment, etc.
  • When circumstances allow, they can replace rare earth magnets.
  • Common applications include sweeper magnets, instruments, etc.
  • They are brittle, so you may not use them for many applications

Neodymium Magnet

Neodymium Magnet

With the detailed comparison of neodymium magnet and ferrite magnet, it is easier to choose a permanent magnet for your applications.

Quick FAQs

How does Neodymium Magnet vs Ferrite Magnet Speakers Compare?

Let’s look at some features that will help you choose the best magnet speakers.

Speaker Design Requirements based on the Magnet Proposed Magnet Type
Efficiency per unit volume
  • Neodymium magnets
Speaker size
  • Small require neodymium while big speakers use may use ferrite magnets
High magnetic strength
  • Choose Neodymium
Cost is a concerned
  • Choose ferrite magnets for speakers
Speakers that may work at slightly elevated temperature
  • Ferritic magnets are the best solution

Remember, you can use both neodymium magnets and ceramic ferrite magnets to make high-quality speakers.

Is Iron Nitride Magnet Stronger than Neodymium?

Theoretically, iron nitride magnets tend to be stronger than neodymium magnets. It does not require any rare earth metal.

Will Ferritic Magnets Lose their Magnetism?

Ferritic magnets can retain their magnetism for a long time. It can only lose a small percentage of its initial magnetism after 100 years.

Magnetize magnets

Magnetize Magnets – Source: Bunting

Can Heat Damage Neodymium Magnet?

Above 80 degrees Celsius neodymium magnet will be damaged. It has a maximum working temperature of 80 degrees Celsius.

Can Neodymium Magnets Chip or Peel?

Yes.

Remember, this permanent magnet is brittle and it can crack, chip, or shatter. Such scenarios are possible even though they are made from metals and can be coated.

Conclusion

The difference between neodymium magnets and ferrite magnets is mainly in the material composition and performance. With the information in the table above, it is easier to decide whether to choose rare earth magnets or ferrite magnets.

For all your quality magnets from China, contact us now.

More Resources:

Types of Ferrite Magnets – Source: BMAGNET

Magnet Material Comparison – Source: First 4 Magnates

Rare Earth Magnets vs. Ferrite Magnets – Source: FISHER & PAYKEL

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