霓虹灯和铁氧体磁铁之间的差异

Thekey differencebetween neodymium and ferrite magnets is thatneodymium magnet contains neodymium, iron and硼as the major components whereas ferrite magnets have iron as the major component.

Rare earth magnets are strong, permanent magnets. Ferrite magnets are not that much strong. Ceramic magnets and regular magnets are two other names for ferrite magnets.

内容

1.Overview and Key Difference
2.什么are Neodymium Magnets
3.什么are Ferrite Magnets
4.Side by Side Comparison – Neodymium vs Ferrite Magnets in Tabular Form
5.概括

什么are Neodymium Magnets?

霓虹灯磁铁是一种具有新生山，铁和硼的稀土磁铁。有两种类型的稀土磁铁。一种是霓虹灯磁铁，另一个是samarium-cobalt磁铁。这些是永久磁铁。另外，该磁铁具有ND形式的上述金属合金₂铁₁₄B tetragonal crystalline structure. Further, it is the strongest commercial grade magnet that is available now. Therefore, these magnets can replace many other forms of magnets in modern products such as motors in cordless tools.

Neodymium is a ferromagnetic material; thus, we can magnetize it to become a magnet. However, the Curie temperature (the material at which the magnet loses its magnetism) of this element is very low. Therefore, in its pure form, it shows magnetism at very low temperatures. But, if we make an alloy of neodymium with sometransition metals例如铁，我们可以改善这种材料的磁性。改进的形式是我们所谓的“霓虹灯磁铁”。

什么是铁氧体磁铁？

铁rrite magnets are ceramic materials havingferromagneticproperties. Therefore, we call them ceramic magnets. regular magnets is another name for ferrite magnets since these magnets are used mainly for regular purposes. The major component in these magnets is ferrite. Ferrite is a ceramic material. It mainly consists of iron(III) oxide. We blend this compound with some other metals such as barium, manganese, nickel and zinc. These components are ferromagnetic and electrically non-conductive.

Additionally, these magnets have low remanence (strength of the magnetic field), coercivity (material’s resistance to becoming demagnetized) comparatively. But, there are two types of ferrite magnets as hard ferrites and soft ferrites according to the coercivity (high and low respectively). Apart from that, the energy product (density of magnetic energy) is also very low comparatively. However, the Curie temperature is comparatively high.

什么is the Difference Between Neodymium and Ferrite Magnets?

Neodymium magnets are a type of rare-earth magnets having neodymium, iron and boron while ferrite magnets are ceramic materials having ferromagnetic properties. So, the key difference between neodymium and ferrite magnets is that neodymium magnet contains neodymium, iron and boron as the major contents whereas ferrite magnets have iron as the major component.

Moreover, neodymium magnets have comparatively very high remanence, coercivity and energy product while in the ferrite magnets, these are very low. Besides, a further difference between neodymium and ferrite magnets is that the curie temperature of neodymium magnets is very low but in ferrite magnets, it is very high.

概括– Neodymium vs Ferrite Magnets

霓虹灯磁铁是一种具有新生山，铁和硼的稀土磁铁。铁rrite magnets are ceramic materials having ferromagnetic properties. The key difference between neodymium and ferrite magnets is that neodymium magnet contains neodymium, iron and boron as the major contents whereas ferrite magnets have iron as the major component.

Reference:

1. “Rare-Earth Magnet.”Wikipedia, Wikimedia Foundation, 8 June 2019,Available here.

Image Courtesy:

1.通过布雷特·乔丹（CC由2.0）通过Flickr
2. “2 Ferrite ring magnets” By Magnequench – Own work(CC BY-SA 3.0)通过Commons Wikimedia