Magnetoinnen

Magnetoinnen is a term used to describe the internal magnetic state of a magnet or magnetic material. It refers to the region inside the material where magnetization occurs, characterized by the magnetization vector field M(r) and internal magnetic fields B_int and H_int. The magnetoinnen is distinct from external magnetic fields acting on the sample and from the surrounding space.

Within the magnetoinnen, the microscopic structure of the material governs how magnetic moments align. Exchange interactions favor parallel alignment of moments, while magnetocrystalline anisotropy and magnetostatic energy shape the arrangement of magnetic domains and domain walls. In single-domain particles, the magnetoinnen can be nearly uniform; in bulk materials, multiple domains form to minimize the total energy.

The state of the magnetoinnen changes with temperature, applied stress, and magnetic history, influencing properties such as coercivity, remanent magnetization, and energy products. Demagnetization, annealing, or mechanical processing can alter defect structures and microstructure, thereby modifying the internal magnetization distribution and magnetic behavior of the material.

Study and modeling of the magnetoinnen rely on experimental and theoretical approaches. Micromagnetic simulations provide insight into domain patterns and dynamics, while techniques such as neutron scattering, magnetic force microscopy, and Kerr microscopy probe the internal magnetization and domain structure. Although not universally standardized as a separate term, magnetoinnen serves as a descriptive label for the interior magnetic state that governs a material’s macroscopic properties.