Abstract
•In this study, x Co0.3Mn0.7Fe2O4- methylcellulose composites (x = 0.2, 0.4, 0.6, and 0.8 wt%) were prepared.•The coercivity of composite samples is greater than that of pure Co0.3Mn0.7Fe2O4.•The incorporating Co0.3Mn0.7Fe2O4 into methylcellulose is a promising tool for increasing coercivity.•This promising effect is expected to be applicable to many magnetic particles.
In this study, x Co0.3Mn0.7Fe2O4- methylcellulose composites (x = 0.2, 0.4, 0.6, and 0.8 wt%) were prepared. The results show that the spinel structure of Co0.3Mn0.7Fe2O4is well preserved in all samples after incorporation into methylcellulose, indicating that no intermediate phase is formed during composite synthesis. Although the saturation magnetization and remanent magnetization of composite samples are significantly lower than those of pure Co0.3Mn0.7Fe2O4, the coercivity of composite samples is greater than that of pure Co0.3Mn0.7Fe2O4. The coercivity of both 0.6 wt% Co0.3Mn0.7Fe2O4- methylcellulose and 0.8 wt% Co0.3Mn0.7Fe2O4- methylcellulose composites is approximately 35 % higher than the corresponding value of pure Co0.3Mn0.7Fe2O4. As a result, incorporating Co0.3Mn0.7Fe2O4 into methylcellulose is a promising tool for increasing coercivity. This promising effect is expected to be applicable to many magnetic particles. Furthermore, the knowledge gained by attempting to control coercivity in magnetic oxides opens the door to applications that require non-volatility through spintronic devices.