y35 ferrite magnet for 3C

y35 ferrite magnet for 3C：

Ferrites that are used in transformer or electromagnetic cores contain nickel, zinc, and/or manganese,compounds. Soft ferrites are not permanent magnets. They have magnetism (much like mild steel), but when the magnetic field is removed, the magnetism decreases. Soft ferrites are commonly used as transformers (to change the voltage from primary to secondary windings). As a result, soft ferrites are also called transformer ferrites.They have a low coercivity. 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.

Isotropic magnet can be magnetized from any direction,but the magnetism is less powerful because the crystal direction is varied.On the contrary,the crystal direction of an anisotropic magnet is unidirectional,so the magnetizing direction is on one direction,and the magnetic force is stronger because the crystals are oriented.

The most common Anisotropic Ferrite Magnets are:

Strontium ferrite, SrFe12O19 (SrO·6Fe2O3), used in small electric motors, micro-wave devices, recording media, magneto-optic media, telecommunication and electronic industry. Strontium hexaferrite (SrFe12O19) is well known for its high coercivity due to its magnetocrystalline anisotropy. It has been widely used in industrial applications as permanent magnets and, because they can be powdered and formed easily, they are finding their applications into micro and nano-types systems such as biomarkers, bio diagnostics and biosensors.

Barium ferrite, BaFe12O19 (BaO·6Fe2O3), a common material for Permanent Magnet applications. Barium ferrites are robust ceramics that are generally stable to moisture and corrosion-resistant. They are used in e.g. loudspeaker magnets and as a medium for magnetic recording, e.g. on magnetic stripe cards.   

Hard ferrites have high coercivity, so are difficult to demagnetize. They are used to make permanent magnets for applications such as refrigerator magnets, loudspeakers, and small electric motors.

Isotropic Magnets:

Isotropic magnets include bond magnets using quick-cooled thin alloy as the raw material and Isotropic Ferrite Magnets, but their magnetic characteristics are inferior to those of anisotropic magnets. Rare earth sintered magnets can not be made isotropic.

The main performance and grade parameters of Isotropic Ferrite Magnet and Anisotropic Ferrite Magnet