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Increasing interests in real-time applications involving delay and loss critical data, routing protocols that consider QoS have become more important for Wireless Sensor Networks (WSNs). Moreover, these applications may also have to deliver non-critical periodic data packets and thus, the mixture of periodic and aperiodic traffic types imposes new challenges in designing communication protocols for WSNs. Our endeavor in this work is to address the QoS provisioning challenges in large-scale WSNs.

Cobalt ferrite (CoFe2O4) is a promising material due to its exceptional ferrelectric, optical, electronic and magnetic properties that are most important for device applications. The oxides with spinel structure are interesting materials responsible for useful device applications due to their promising chemical and physical properties achievable in accommodation of foreign citations. Partial substitution of iron with transition metals might play an important role to improve its different properties useful in various applications. Degree of crystallinity, particle size, electrical...