A Msc thesis titled (Modeling and Simulation of Magnetic Hysteresis loop for Ferromagnet Used in Spintronic Applications) was defended at College of Science, Department of Physics on (Mar 7, 2024), for the Msc Candidate Mohammed Hassan Abbas. The aim of the thesis is: Synthesis and characterization of ferromagnet NPs. materials  and study its magnetic behavior with the use of the appropriate mathematical model to simulate the hysteresis loop