Title : Interdependence of morphological electrical and magnetic properties of cu-substituted ni-zn-mg nano-crystalline ferrite
Abstract:
Ferrites having chemical formula, Ni0.5-xCuxZn0.3Mg0.2Fe2O4 with x = 0, 0.1, 0.2, 0.3, 0.4 and 0.5 have been prepared by auto-combustion route. Field emission scanning electron microscopy (FE-SEM) micrographs show that samples have nano-crystalline behavior and show spherical shape. Selected area electron diffraction (SAD) patterns confirm the spinel structure of the ferrite. Transmission electron microscopy (TEM) images show a well defined nano-crystallite state with an average particle size of around 28 to 39 nm. The electric properties have been studied by means of DC electrical resistivity. The increase in AC conductivity is observed with increase in Cu-content, indicates dispersion with frequency at room temperature. The magnetic hysteresis were done using vibrating sample magnetometer (VSM) which show that saturation magnetization (Ms), remanent magnetization (Mr) and coercivity (Hc) decrease with increasing Cu-content exhibiting super paramagnetism characteristic at room temperature. The frequency dependence initial permeability was studied in the range of 100Hz to 5MHz. This shows high frequency stability after dispersion occurred. The graph of magnetic loss tan (δμ/μi) supports dispersion. Variation of loss tan (δμ/μi) against frequency exhibit resonating behavior.
Keywords: Spinel ferrites; DC resistivity; AC conductivity; M-H loop; Initial Permeability.
Audience Take Away Notes:
- There are several commonly used methods; each offers its own insights into your target audience. You should eliminate any information that has already been found by other researchers as part of your primary research phase, since this will allow you to start from scratch. You might choose to use qualitative or quantitative research methods during this process, but all information should come from your own work and findings
- Ferrite nano-particles (FNPs) belong to a broad group of magnetic nano-particles (MNPs) and have received a considerable amount of attention due to their wide applications in various fields, which ranges from biomedical to industrial
- Yes, this research that other faculty could be used to expand their research or teaching. Probably the most conventional argument for how research supports teaching is that faculty with active research programs bring their research into the classroom and use it to inform their teaching
