Temperature characteristics and temperature coefficient of ferrite magnets

    Ferrite magnets have a positive endogenous coercivity temperature coefficient (+0.27% / degree Celsius relative to the environment), and only ferrite expresses this property so much. However, the magnetic output decreases with increasing temperature (it has a negative induced temperature coefficient of -0.2% / degree Celsius. The end result is that ferrite magnets can be used at high temperatures with little or no problems.

    Ferrite magnets can be used at temperatures up to+250 degrees Celsius (in some cases up to+300 degrees Celsius), making them highly suitable for motors and most high-temperature applications. At temperatures below zero, such as -10 to -20 degrees Celsius, ferrite magnets may begin to exhibit reduced tensile strength. That is to say, the temperature and degree of attenuation depend on the shape of the magnet and are specific to the application. In most applicationsThe temperature characteristics of a magnet refer to the trend and characteristics of magnetic properties changing with temperature. Generally speaking, ferrite magnets have higher magnetic properties at low temperatures, and their magnetic properties gradually decrease as the temperature increases. When the temperature reaches a certain value, the magnetic properties will rapidly decrease and enter the critical temperature region. The magnetic properties show a very sensitive response near the critical temperature, which is called the "Critical exponent".
    The temperature coefficient refers to the numerical value of the magnetic properties of a magnet as a function of temperature. The temperature coefficient is usually expressed as the percentage of magnetic change when the temperature changes by 1 ℃. The size of the temperature coefficient depends on the type and quality of the magnetic material. For ferrite magnets, their temperature coefficient is usually small, ranging from 0.01% to 0.05%, which allows their magnetic properties to maintain a relatively stable level over a wide temperature range.
    In practical applications, the influence of temperature on ferrite magnets needs to be fully considered. For example, in the field of power transmission and transformation, ferrite magnets are often used as the core of transformers. In high-temperature environments, the magnetic properties of ferrite magnets may be adversely affected, leading to transformer damage. Therefore, temperature parameters must be taken into account in the design and manufacturing process, and corresponding measures must be taken to ensure that ferrite magnets can operate normally at various temperatures.
    Overall, the temperature characteristics and temperature coefficient of ferrite magnets are very important parameters in magnetic materials. Their research and mastery are of great significance for optimizing magnetic performance and improving the application effect of magnetic materials at various temperatures., the operating temperature is not sufficient to produce this effect.