Magnetism is a fundamental physical phenomenon arising from the motion of electric charges and the intrinsic quantum mechanical property of particles known as spin. It manifests as forces of attraction or repulsion between materials and is described by magnetic fields, which are generated by moving charges (electric currents) or by the magnetic moments of electrons within atoms. At the atomic scale, magnetism originates primarily from two sources: the orbital motion of electrons around the nucleus and the electron’s intrinsic spin angular momentum. The collective alignment of these microscopic magnetic moments determines the macroscopic magnetic behavior of a material — whether it is diamagnetic, paramagnetic, ferromagnetic, ferrimagnetic, or antiferromagnetic.
A foundational walkthrough of magnetic fields, north-south poles, and how magnetic forces act on moving charges. Read more about Magnetism Basics: Definition, Types, & Temperature Dependence
Spintronics is where the story of tiny electron spins meets real-world technology. In this blog, I talk about… Read more about Spin-Orbit Coupling Explained: Electron Moments, the Nucleus & Spintronics Applications
From lodestones to modern spintronics, this note traces how magnetism became a central physics idea. Read more about History of Magnetism: A Complete Guide from Ancient Lodestones to Modern Science