abstract

• This paper presents the study of the magnetic properties exhibited by a highly porous strontium ferrite with a copper metal cover. The analyzed samples consisted of a mix of the M − and X-type ferrimagnetic phases. The characterization included optical microscopy, X-ray diffraction, and the Rietveld refinement method. Microstructural characteristics and magnetic properties were studied at different amounts of electrodeposited copper. Results show the emergence of strong ferrimagnetic coupling between the M and the X phases, whereas the copper layer enhances the squareness remanence (Mr/Ms). A reduction in the width of the switching field distribution (SFD) curves observed in the porous structures indicates an intense competition between the exchange and magnetostatic interactions, which results in the emergence of a cooperative switching of the particles. This interesting phenomenon is a product of a conjunction of the porous structure together with the ferrimagnetic coupling of the ferrimagnetic phases. © 2019 Elsevier B.V.

authors

• Aranda Espinoza Said Eduardo
• Cabal-Velarde J.G.
• Espericueta D.L.
• García-Serrano J.
• Herrera-González A.M.
• Lobo-Guerrero A.
• Mirabal García Manuel
• Santos-López F.J.
• Saucedo-Anaya S.

publication date

• 2020-01-01

funding provided via

• Universidad Autónoma de Zacatecas, UAZ  Grant

published in

• Physica B: Condensed Matter  Journal

keywords

• Copper metal electrodeposition; Exchange interaction; Hexagonal ferrites; Porous ceramics Electrodeposition; Electrodes; Exchange interactions; Ferrimagnetism; Ferrite; Magnetic properties; Magnetostatics; Porosity; Rietveld refinement; Copper metal; Electrodeposited copper; Hexagonal ferrite; Magnetostatic interactions; Micro-structural characteristics; Porous ceramics; Rietveld refinement method; Switching field distribution; Copper

Digital Object Identifier (DOI)

• 10.1016/j.physb.2019.411800

start page

end page

volume

• 579