Not my particular field, but were they fabricated identically and how high is the qualification level of the process? For many parameters, impurities apart from the dopant, air inclusions in the material and many other hidden parameters may have an influence.

Hai As

*The reason for random variation of saturation magnetization of rare earth (Dy) doped Ni-Zn ferrites is due to the formation of a wide distribution of grain size and secondary phases, which can cause a variation in the anisotropy field and hence the saturation magnetization.

*Different synthesis parameters, such as precursor concentration, temperature, time, pH, etc., can have an effect on the saturation magnetization. Additionally, the addition of other elements to the ferrite matrix can also have an impact on the saturation magnetization.

*The nature of the dopants used to dope the ferrite can also affect the saturation magnetization. The kind of dopants used, their concentrations and combination with other elements can all play a role in influencing the saturation magnetization.

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