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Magnetism Ceramic/Ferrite Block Magnets

Magnetism Ceramic/Ferrite Block Magnets

Country/Region china

Company Main Rich International LimitedJiangxi YG Magnet Co.,Ltd

Categories Ferrite Block Magnet

Update 2016-07-19 16:52:53

ICP License Issued by the Chinese Ministry

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  • Product Name:Ceramic/Ferrite Block Magnets

  • Category:Ferrite

  • Clicks:2
  • Release date:2016/06/04
  • Request Samples Inquiry
Details

Ceramic/Ferrite Block Magnets

Shape: Block

Material: Fe203

Dimension: Customization

Magnetization direction: Through Thickness

Tolerances: '+/-0.1mm

Coating: No need Coating.

A ferrite is a type of ceramic compound composed of iron oxide (Fe2O3) combined chemically with one or more additional metallic elements.They are both electrically nonconductive and ferrimagnetic, meaning they can be magnetized or attracted to a magnet. Ferrites can be divided into two families based on their magnetic coercivity, their resistance to being demagnetized. Hard ferrites have high coercivity; Hence they are difficult to demagnetize. They are used to make magnets, for devices such as refrigerator magnets, loudspeakers and small electric motors. Soft ferrites have low coercivity. They are used in the electronics industry to make ferrite cores for inductors and transformers.

Characteristic of Sintered Ferrite Mangets

Ferrite Magnet Grade B.png

Soft Ferrites

Various ferrite cores used to make small transformers and inductors Ferrites that are used in transformer or electromagneticcores contain nickel, zinc, and/or manganese compounds. They have a low coercivity and are called soft ferrites. The low coercivity means the material's magnetization can easily reverse direction without dissipating much energy (hysteresis losses), while the material's high resistivity prevents eddy currents in the core, another source of energy loss. Because of their comparatively low losses at high frequencies, they are extensively used in the cores of RF transformers and inductors in applications such as switched-mode power supplies and loopstick antennas used in AM radios.permanent ferrite magnets are made of hard ferrites, which have a high coercivity and highremanence after magnetization. Iron oxide and barium or strontium carbonate are used in manufacturing of hard ferrite magnets.The high coercivity means the materials are very resistant to becoming demagnetized, an essential characteristic for a permanent magnet. They also have high magnetic permeability. These so-calledceramic magnets are cheap, and are widely used in household products such as refrigerator magnets.

Hard Ferrites

Strontium ferrite, SrFe12O19 (SrO6Fe2O3), used in small electric motors, micro-wave devices, recording media, magneto-optic media, telecommunication and electronic industry.

Barium ferrite, BaFe12O19 (BaO6Fe2O3), a common material for permanent magnet applicati


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