Exploring the magnetic properties and magnetic coupling in SrFe12O19/ Co1-XZnXFe2O4 nanocomposites

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

卷:535

Article

Maltoni, P.¹  Sarkar, T.¹  Barucca, G.²  Varvaro, G.³  Peddis, D.^3,4  Mathieu, R.¹ 

[1] Uppsala Univ, Dept Mat Sci & Engn, Box 35, SE-75103 Uppsala, Sweden

[2] Univ Politecn Marche SIMAU, Via Brecce Bianche 12, I-60131 Ancona, Italy

[3] Italian Natl Res Council CNR, Inst Struct Matter, I-00015 Rome, Italy

[4] Univ Genoa, Dipartimento Chim & Chim Ind, Via Dodecaneso 31, I-16146 Genoa, Italy

关键词: Ferrites;    Magnetic nanocomposites;    Nanostructures;   

DOI  :  10.1016/j.jmmm.2021.168095

来源: Elsevier

【 摘 要 】

Among hard/soft nanocomposites (NCs), ferrite-based materials are potentially promising for developing exchange-coupled systems, thus leading to enhanced magnetic properties. In this regard, we investigate the role of the synthesis approach in the development of SrFe12O19/CoFe2O4 (SFO/CFO) NCs, with special focus on tuning the magnetic features of the softer phase (CFO) by introducing Zn2+ in the spinel structure. X-ray powder diffraction (XRPD), transmission electron microscopy (TEM) and squid magnetometry were employed to clarify the relationship between morphology, size, and magnetic properties of the NCs, pointing out the feasibility of this method in obtaining successfully exchange-coupled systems. This work shows how optimizing the intrinsic magnetic properties of the CFO may be used to tune the extrinsic ones of the NCs. Despite the promising results in magnetic coupling, our study clearly confirms/strengthens that an enhancement of remanent magnetization is the most important factor for improving the magnetic performance.

【 授权许可】

Free