ferritové

Ferritové is a term that generally refers to materials containing ferrite, which are ceramic compounds of iron and one or more other metallic elements. These materials are widely used in various technological applications due to their magnetic properties. Ferrite can be broadly categorized into two main types: soft ferrites and hard ferrites.

Soft ferrites are characterized by their low magnetic coercivity and high electrical resistivity. They are easily magnetized and demagnetized, making them ideal for applications where alternating magnetic fields are present. Common examples include manganese-zinc ferrite and nickel-zinc ferrite. These are extensively utilized in inductors, transformers, read/write heads for magnetic storage devices, and radio frequency components. Their ability to minimize energy losses in AC applications is crucial for efficient operation.

Hard ferrites, also known as permanent magnets, exhibit high coercivity and remanence, meaning they retain their magnetism even after the external magnetic field is removed. Barium ferrite and strontium ferrite are typical examples. They are less expensive than other permanent magnet materials like neodymium magnets but offer lower magnetic strength. Hard ferrites find applications in loudspeakers, electric motors, magnetic separators, and refrigerator door seals. Their cost-effectiveness and reasonable magnetic performance make them a popular choice for many everyday devices. The production of ferrites involves sintering powdered metal oxides at high temperatures.