Mn-Zn ferrites are a type of magnetic material with a wide range of applications due to their high permeability, high electrical resistivity, and low eddy current losses. This paper provides an overview of the synthesis methods, characterization techniques, properties, and applications of Mn-Zn ferrites. Various synthesis methods such as sol-gel, co-precipitation, and ceramic techniques are discussed, along with their advantages and disadvantages. Structural characterization techniques such as X-ray diffraction and transmission electron microscopy are also covered. The properties of Mn-Zn ferrites, including their magnetic, electrical, and thermal properties, are discussed in detail. The applications of Mn-Zn ferrites in various fields such as electronics, telecommunications, and biomedical engineering are also presented. Finally, the challenges and future directions in Mn-Zn ferrite research are discussed, including the need for more efficient synthesis methods, improved structural characterization, and the optimization of properties for specific applications. Overall, Mn-Zn ferrites are an important class of magnetic materials with significant potential for future applications.