This course is the result of several years of research conducted as part of a Doctoral thesis within the ab-initio team at the LPCMIA laboratory, as well as years of teaching experience. The use of the Crystal computational program has allowed us to gain insights into various aspects, whether in research or pedagogy.

Given the language barriers and the challenges our students face in understanding the physical aspects of phenomena, particularly magnetic properties, we conceived this work as a course summarizing the essential elements of the magnetic properties of materials.

This course is intended for Bachelor's and Master's students in fundamental physics, general physics, or materials physics, as well as for PhD candidates in physics. It serves as a foundational element in their training.

The development of this course relied on a rich library of documentation published by specialists in the field of magnetism. Notable examples include Ashcroft & Mermin [ref1] and the works on magnetism by the Louis Néel Laboratory (Nobel Prize in Physics) [ref2, ref3] in Grenoble, which serve as fundamental references on the topic of magnetism.