This book delves into the fascinating world of iron-based magnetic nanoparticles and focuses primarily on their synthesis. The synthesis of iron-based MNPs is a complex and intricate process that requires a deep understanding of materials science, chemistry, and nanotechnology. Over the years, various methods have been explored and developed to fabricate iron-based MNPs with different sizes, shapes, and compositions. The chapters within this book explore the diverse synthesis methods employed in the creation of iron-based MNPs. From traditional precipitation techniques to sophisticated approaches such as thermal, pyrolysis, vapor deposition, and sonochemical methods, each method is thoroughly examined and discussed. I am profoundly grateful to Dr. N.M. Abdul Khader Jailani, my beloved teacher and well-wisher, for his invaluable guidance and unwavering support throughout my academic journey. His passion for science and dedication to teaching has been a constant source of inspiration for me. It is with great honor and gratitude that I dedicate this book to him, as a testament to his influence on my pursuit of knowledge.

Mookkandi Palsamy Kesavan, professeur adjoint de chimie, Hajee Karutha Rowther Howdia College, Uthamapalayam.Nagarathinam Nagarjun, chercheur associé au Centre national pour la catalyse et la recherche, département de chimie, IIT-Madras.R. Rajan, professeur associé de chimie, Excel Engineering College, Komarapalayam.