Preparation and magnetic properties of the Sr-hexaferrite with foam structure

Guerrero, A. Lobo; Espericueta, D.; Palomares-Sánchez, S.A.; Galindo, José Trinidad Elizalde; Watts, Bernard Enrico; Mirabal‐García, M.

doi:10.1016/j.jmmm.2016.06.064

Cited by 8 publications

(1 citation statement)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This occurrence led to a reduction of the distance between CIPs, hence the magnetic field aligned easily, and thus a higher value of permeability was obtained. In fact, these findings are consistent with Guerrero et al [18] but do not support the previous research by Igarashi and Okazaki [19], who identified that the permeability decreased with the increase in porosity of polycrystalline ferrite.…”

Section: Samplessupporting

confidence: 48%

Relationship between the response of microscopic and magnetic properties with highly uniform dispersion of carbonyl iron particles in magnetorheological polyurethane foam

Norhaniza

Mazlan

Aziz

et al. 2020

Smart Mater. Struct.

View full text Add to dashboard Cite

Magnetorheological (MR) foam, which is comprised of magnetic particles inside the matrix phase, is capable of changing its physical and rheological properties corresponding to the applied magnetic field. However, the performance of this material seems unsatisfactory due to the nonuniform distribution of magnetic particles throughout the composite area resulting in uneven magnetic properties. Since uniform magnetic properties are significant regarding MR foam, in situ fabrication using a polyvinyl chloride mould can be used to achieve the targetted improvement. MR foam was prepared with various amounts of carbonyl iron particles (CIPs), 0, 35, 45 and 55 wt%, and investigated at three different positions (top, middle and bottom parts) with a vibration sample magnetometer. The results showed that the hysteresis loop at all CIP concentrations of 35, 45 and 55 wt% exhibited superparamagnetic properties with magnetic saturation. The M s of the top, middle and bottom positions were almost the same with a small standard deviation below 2 Am2 kg–1. Moreover, it is observed that the effect of porosity results in the enhancement of the magnetic saturation and remanence values. These results reveal the promising uniform magnetic properties of MR foam, which can benefit the industry by helping produce a consistent MR foam.

show abstract

Section: Samplessupporting

confidence: 48%