Remanenttisella

Remanenttisella is a Finnish term used in science to describe a state in which a material retains part of its magnetization after an external magnetic field has been removed. The word is formed from remanentti (remanent) and is commonly encountered in discussions of magnetism and magnetic materials, where it appears in phrases such as remanenttisella magnetismilla.

In physics, remanent magnetization is the portion of magnetic moment that remains in a ferromagnetic material after the applied magnetic field is reduced to zero. The remanent component, often denoted Mr, reflects how many magnetic domains remain aligned once external influence is removed. The magnitude of remanence depends on material properties such as crystal structure, grain size, temperature, and the history of the magnetic field exposure. Materials with high remanence include certain iron-nickel alloys and hard ferrites, which are commonly used in permanent magnets.

Measurement and relevance: remanent magnetization is typically studied using hysteresis loops, where the remanence corresponds to the magnetization value at zero applied field after saturation. This property is essential for applications that require long-term magnetic memory, such as permanent magnets and magnetic storage devices. It also influences the design and performance of magnetic sensors and actuators.

See also: remanence, magnetic hysteresis, coercivity, ferromagnetism.