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Lanthanum substitution on spinel Nano particles has a significant repercussion on the several features of materials. Sol–gel (auto-ignition) allowed for the substitution of the rare earth lanthanum ion (La 3+ ) for spinel ferrite with composition SrLa x Fe 2-x O 4  (where 0.00x0.10). As a result of the base’s presence, the systems structural, magnetic, electrical, and magnetic properties are all modified. X-ray diffraction (XRD) assessed the structural characteristics. Using X-ray diffraction, we could determine that each sample had cubic structures. Based on electrical investigation, it can be concluded that the synthesized ferrites are semiconductors, as their direct current (dc) resistivity reduces with increasing temperature. The Curie temperature ( T c) was lowered from 532 K to 462 K with the substitution of lanthanum ions. The values for activation energy increased from 0.24 eV to 0.38 eV when lanthanum is used as a substitute. The values of magnetization decreased from 50 eV to 27 eV as lanthanum content rose. We could see the gentleness of the material in M-H loops. All these parameters show that the prepared sample is a potential material for use in high-frequency applications.

journal of taibah university for science

The structural and dielectric properties of lanthanum substituted strontium based spinel ferrites nano-materials for high frequency device applications