iron oxide powder magnetic, What is iron oxide powder magnetism?

What is iron oxide powder magnetism?

.

The magnetism of iron oxide powder refers to the magnetic properties of iron oxide powder under the applied magnetic field. Iron oxide powder has good magnetic properties, so it is widely used in many fields.

.

Magnetic application of iron oxide powder

.

Iron oxide powder magnetism has a wide range of applications in many fields, such as:

.

.

The preparation of magnetic fluid: the magnetic properties of iron oxide powder can make the fluid have magnetic properties, which is widely used in medicine, environmental protection and other fields.

The preparation of magnetic materials: the magnetic properties of iron oxide powder can make the material have magnetic properties, which are widely used in the fields of electronics, communications and so on.

The preparation of magnetic recording materials: the magnetic properties of iron oxide powder can make the recording materials have magnetic properties, so that it is widely used in the fields of information storage and transmission.

.

iron oxide powder magnetic preparation method

.

The preparation methods of iron oxide powder magnetism are mainly as follows:

.

.

Chemical coprecipitation: Fe2+ and Fe3+ solution mixed with sodium hydroxide solution, after the reaction to obtain iron oxide powder.

Hydrothermal method: The solution of FeCl3 and aOH is mixed and reacted under high temperature and pressure to obtain iron oxide powder.

Physical vapor deposition: The preparation of iron oxide powder by chemical reaction under high temperature and pressure.

.

iron oxide powder magnetic properties

.

The magnetic properties of iron oxide powder mainly have the following aspects:

.

.

Saturation magnetization: The saturation magnetization of iron oxide powder is high, which can reach 400kA/m.

Remanence: The remanence of iron oxide powder is small, generally below 0.2T.

Coercivity: The coercivity of iron oxide powder is small, generally below 100A/m.

Permeability: The permeability of iron oxide powder is high, generally more than 2000.

.

iron oxide powder magnetic precautions

.

When using iron oxide powder magnetism, the following matters need to be noted:

.

.

Avoid contact with water: iron oxide powder is easy to react with water to produce iron hydroxide, affecting its magnetism.

Avoid high temperature and high pressure: iron oxide powder at high temperature and high pressure is easy to phase change, affecting its magnetic properties.

Avoid moisture: iron oxide powder is susceptible to moisture, affecting its magnetism.

.

The magnetism of iron oxide powder is an important physical property and has been widely used in many fields. When using iron oxide powder magnetism, it is necessary to pay attention to its preparation method, properties, precautions and other aspects to ensure its good magnetic properties.

.