What is the isotropy and anisotropy of ferrite magnets?

There are two types of ferrite permanent magnets, isotropic and anisotropic, and two manufacturing methods, dry pressing and wet pressing. Due to the low cost of raw materials and easy mass production, they are the most demanded and widely used material in the market.
The so-called isotropic magnets are made of fine particles in the form of powdered gold, but without any magnetic field alignment, and are directly pressed into shape. However, the disadvantage is that the magnetic separation is weak and some applications may not be able to meet the magnetic requirements set by the customer.

The so-called anisotropic magnets are the opposite of isotropic magnets. They are made of fine powders that are arranged in a fixed axial or radial direction using a high pressure magnetic field during the molding process.
The main differences between isotropic and anisotropic ferrite magnets
Isotropic: 1) The raw material is granular, about 3 or 4 um in size. 2) The raw material is not magnetized and arranged. 3) The magnetization can be done in any direction. 4) The magnetic force is about 500 ~ 800 gauss when magnetized in the thickness direction.
Anisotropy: 1. The raw material is in powder form, about 0.85 to 0.1 um in size. 2. The powder is arranged by magnetization when forming. 3. etc. 4. The magnetic force is about 800 ~ 1,400 gauss when magnetized according to the thickness direction.
Ferrite isotropic molded magnets: mostly single-sided magnetic force, widely used as refrigerator magnets, as one of the complimentary components. Ferrite isotropic molded magnets: two-sided magnetic force, slightly stronger, widely used in electronics, toys, industry, furniture, stationery, gifts... All can be applied, such as micro motor, generator, inverter motor, iron separator, buzzer, magnetic tools, fastener components, induction components, DY image adjustment, health magnetic therapy, speaker, door gear, sinker gangpu, automatic components, movement, magnetic suction seat, others, etc.