Microwave assisted cobalt nickel ferrite as exhaust thrust sensor and EMI shield

Abstract

Spinel ferrites have garnered an increasing share of attention in recent decades. The fact that these substances are employed in a wide range of applications, such as electromagnetic interference interference (EMI) shielding and sensor technology. Exhaust thrust sensors have an increasing demand in exhaust air circulator of automobile engine. In the present article Co0.5Ni0.5Fe2O4 (CNF) is synthesized by ceramic route and are sintered using microwaves. The structural, optical, magnetic and morphology are studied using X-ray diffraction, Ultraviolet (UV) visible, Vibrating sample magnetometer (VSM) and scanning electron microscopy (SEM). The magnetic initial permeability as a function of temperature has exhibited quasi single domain grain behaviour. Large stress response and exhaust pressure sensitivity are noticed for the bulk as well as micro inductor fabricated suggesting a plausible application as exhaust thrust sensor applications. The CNF exhibits a high total shielding effectiveness of 55.96 dB, suggesting that almost 99.999% of incoming electromagnetic radiation is effectively reduced by this material. Spinel ferrite CNF have excellent electromagnetic shielding in microwave region and making it very useful for military (radar and stealth) and electronic industries.