Magnetic Questions and Answers

Magnet Questions & Answers, Magnetic Strength, Magnetic Field, Magnetic Poles, Magnetic Flux,  Magnetic Orientation, Magnetic Characteristics, Magnetic Properties, Magnet Operating Temperatures, Machining Magnets, Magnetic Assemblies, Magnetic Resources, Magnet questions, questions about magnets, magnet question. Frequently asked magnet questions, magnet, magnets, magnetism

Magnosphere can help to answer many of these commonly asked questions about magnets and magnetism. If you have additional questions, please contact us.

What is a magnet?

At its most basic level, a magnet is an object that is made of materials that create a magnetic field. Magnets have poles, at least one north pole and one south pole.

What is a magnetic field?

A magnetic field is the region in space where a magnetic force can be detected. The magnetic field strength and direction can be measured in terms of strength and direction.

What is magnetism?

Magnetism is the force of attraction or repulsion between substances made of certain materials, such as iron, nickel, cobalt, and steel. The force of magnetism, simply put, is due to the motion of electric charges.

What can magnets do?

Magnets have several useful functions. Based on experience with household magnets, most people know that magnets attract materials, including iron, nickel, cobalt, and steel. Many people also know that magnets attract magnets at opposite poles and repel magnets at like poles. But magnets do much more.

Magnets effect electrically charged particles and electrical conductors. Magnets have the ability transform electrical energy without losing their own energy. These effects can perform useful functions, for example:

  • Electrical-to-mechanical effects are key in the function of motors, loudspeakers, and equipment that requires charged particle deflection.
  • Mechanical-to-electrical effects are useful in generators and microphones.
  • Mechanical-to-heat effects facilitate eddy current and hysteresis torque devices.
  • Mechanical-to-mechanical effects attract or repulse objects.
  • Other effects of magnets include magneto-resistance and magnetic resonance.

What are rare earth magnets?

The term Rare Earth Magnets is used to refer to a group of magnetic materials whose alloys consist of one or more of the Rare Earth elements. These materials are characterized by exceptionally strong magnetic properties.

What are alnico magnets?

Alnico magnets are aluminum-nickel-cobalt magnets. They are ideal for high-temperature use, At Adams, we stock most types of Alnico materials, and they are commonhttly supplied as long rods or bars. A long magnetic path length to pole surface ratio (usually 4:1 or greater) assists in providing good magnetic performance.

What are flexible magnets?

Flexible magnets have multi-pole magnetization patterns for maximum holding power. They are easily cut with scissors, knives, or die cut. They are available with adhesive or colored vinyl coating.

What are ceramic magnets?

Ceramic magnets are made from strontium and iron oxide powders. They are generally harder, more brittle and lighter than metal alloy magnets. Ceramic magnets have a high electrical resistance.

What soft ferrite magnets?

Soft ferrite is a nonmetallic magnetic material. Soft ferrite cores are used in computers, telecommunication equipment, TVs, and a variety of industrial equipment. Magnosphere is an authorized distributor of Soft Ferrite cores and accessories manufactured by Ferroxcube (formerly Philips), EPCOS (formerly Siemens), Magnetics Inc., Neosid, and Steward.

What are soft ferrite cores?

Magnetic assemblies are up to 32 times stronger than regular magnets and are typically made with ceramic magnets. At Magnosphere, we create magnetic assemblies in custom sizes, designs, and coatings.

What are permanent magnets made of?

Today's permanent magnets are made of alloys. Alloy materials include

  • Aluminum-Nickel-Cobalt (Alnico)
  • Neodymium-Iron-Boron (Neo magnets or "super magnets", a member of the rare earth category)
  • Samarium-Cobalt (a member of the rare earth category)
  • Strontium-Iron (Ferrite or Ceramic)

How are magnets made?

Magnets are made using the following manufacturing methods:

  • Calendering
  • Casting
  • Compression bonding
  • Extruding
  • Injection molding
  • Pressing and sintering

What are magnetic poles?

All magnets have points, or poles, where their magnetic strength is concentrated. Those points are called poles. We label them north and south because suspended magnets orient along north-south planes. On different magnets, like poles repel each other, opposite poles attract.

What is the difference between the north and south poles of a magnet?

When suspended or allowed to rotate freely, magnets orient themselves in a north-south direction. The end of a magnet that points to the north is called the north pole. The point that seeks the south is called the south pole.

Is there a simple way to tell which end of a magnet is the north pole?

Both poles of a magnet look the same. However, if you place a compass near a magnet, the needle that normally points toward the north pole of the earth moves in the direction of the magnet's south pole.

What does 'orientation direction' mean?

Some magnets, called oriented or anisotropic magnets, have a preferred direction in which they should be magnetized. The orientation direction, also known as an easy axis or axis, is the direction that achieves its maximum magnetism. Other magnets, called unoriented or isotropic magnets, can be magnetized in any direction.

Is it true that magnetic fields are stronger closer to the magnets themselves?

Yes. The strength of magnetic fields diminishes with distance. This phenomenon can be measured with exponential equations.

What is the difference between permanent magnets and electromagnets?

Permanent magnets emit a magnetic field without the need for any external source of power. An electromagnet emits a magnetic field only when an electrical current runs through it.

Are permanent magnets really permanent?

Magnets generally retain their magnetism unless they are stored near power lines, other magnets, and high temperatures. Over time, magnet materials lose a very small amount of magnetism. For example, Samarium Cobalt magnets may lose about 1% of their magnetism in ten years.

Do magnets get weaker? How?

Several factors can weaken the magnetism in a magnet. If a magnet is stored close to heat, strong electrical currents, other magnets, or radiation, it can lose its strength. Additionally, high humidity can corrode neodymium magnets.

Can magnets that have lost their magnetism be re-magnetized?

That depends on how the magnetism was lost. Usually magnets can regain their original strength unless they've been exposed to extreme heat.

Can magnets be made stronger?

Once a magnet is fully magnetized, it cannot be made any stronger.

How is magnetic strength measured?

A number of devices measure the strength of magnets. Here are a few common devices.

  • Permeameters measure the magnetic characteristics of a specimen.
  • Gaussmeters measure the strength of a magnet in units called Gauss units.
  • Magnetometers measure in Gauss or arbitrary units for comparing magnets.
  • Pull Testers measure the strength of a magnet's pulling power in pounds, kilograms, or other force units.

Neodymium Magnets, Neo magnets, Neodymium Iron Boron magnets, Neodymium-Iron-Boron magnets, NdBFe magnets, NdFeB magnets, NIB magnets, Super Strength magnets and Rare Earth magnets What kind of magnets are the strongest?

Rare earth magnets are the strongest.


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What types of magnets does Magnosphere specialize in?

We specialize in several types of magnets.

  • Flexible magnets are made of thermoplastic materials and can be bent without affecting their performance.
  • Ceramic magnets, or hard ferrite magnets, are rigid and brittle provide good magnetic performance, and are generally economical.
  • Alnico, or aluminum-nickel-cobalt, magnets are ideal for high-temperature use.
  • Rare earth magnets deliver incredible strength in a small package.
  • Magnetic assemblies, which are up to 32 times stronger than magnets alone.
  • We also distribute of soft ferrite cores and accessories that are used in transformers and power supplies.

How do I contact Magnosphere?

Just call +49.2241.959450, fax +49.2241.9594520, or email info(at)

What information should I provide when ordering?

We will help you with your order. Usually we ask for the following information.

  • Size limitations of the magnet or, if available, a sketch or drawing with dimensions and tolerances.
  • Holding power or pounds pull required.
  • Degree of heat involved, if extreme.
  • Type of magnetic material.
  • Quantities required.
  • Information on what you want to use the magnet for.

Does Magnosphere have a catalog?

We have an online catalog

- Download Magnets & Magnetic Materials Catalog

Catalog Quick View

It appears you don't have a PDF plugin for this browser. No biggie... you can click here to download the PDF Magnets & Magnetic Materials Catalog.

How to Safely Seperate Your Magnosphere Magnets?

How to safely seperate Neodymium Magnets


  1. Slide one magnet off the top of the stack.
  2. Once off thestack,carefully start lifting the magnet.
  3. Lift the magnet to free it from the stack.


  1. DO NOT attempt to pull, lift, or pry amagnet from the stack before sliding it to the side.
  2. DO NOT throw away the white storage spacers.
  3. DO NOT allow the magnets to snap to each other or any magnetic surface. doing so may cause magnets to break!

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Our magnetic product assortment includes: disc magnets, ring magnets, magnetic spheres, block magnets, pot magnets, clamping magnets, car roof magnets, ceiling magnets, switching magnets, lifting magnets, flexible rubber magnets, sheet magnets, tape magnets, steel tape, notice boards, notice board magnets, magnetic paper, fridge magnets, business card conversions, magnetic sweepers, magnetic separation rod magnets, separator grids, compasses, gaussmeters, magnetic viewing film, iron filings, experiment kits, generator magnets, reed switch magnets, educational magnets.

Wholesale prices: Click here to request quote

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We ship our Magnets worldwid via Sea or Air Shipment

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Buy Neodymium Rectangular Magnets at Magnosphere and get a better deal!

Magnosphere produces magnets at great prices, produced and delivered on time for all areas of industry, automotive, aerospace, electronics as well as in the design sector, trade fair construction, offices and for the home.

We are an ISO certified shop and carry the Trusted Shops seal. We have successfully completed more than 300,000 orders and offer our ever-growing customer base 24/7 customer service.

All items are available for immediate delivery in large numbers with daily dispatch. Our selection is your win! Thousands of satisfied customers! Buy from a company with the highest quality standards and customer service with flexible and diverse payment options and conditions.

We can also custom manufacture these to fit your exact specifications using our in-house global manufacturing facilities and team of experienced engineers. Need high quantities of magnets at the lowest and fairest price possible? Just let us know what you are looking for and contact our Customer Care Team by sending us a request for quote! We'll work with you to determine the most economical way of providing you with what you need.

Trust in our experience and convince yourself of our service and our products and we look forward to welcoming you to our magnet shop at Magnosphere. You are welcome to contact us by eMail: info(at) Available 24/7 x 365 and we are also there for you on public holidays! Or just give us a call.


ROHS-Directive Magnosphere conforms to the RoHs directive and the Reach and PFOS regulations. Directive 2002/96 / EC of the European Parliament and of the Council, of January 27, 2003, on waste electrical and electronic equipment (WEEE).

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We are very proud to offer excellent customer service. We know that without our clients, we would not be here. If you have any questions about your order or something else, please call or email us!: info(at)
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