Decoding magnetization and magnetic anisotropy in core@shell ferrite nanoparticles: interplay between cation distribution and spin disorder

Nanoscale 2026 Open access

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Authors: Rafael C Gomes, Vanessa Pilati, Fernando H Martins, Franciscarlos Gomes da Silva, Guilherme Gomide, Bárbara C C Pereira, Priscilla Coppola, Fabio Luis Oliveira Paula, Alex Fabiano Cortez Campos, Cynara Kern Barreto, Gerardo F. Goya, Florence Porcher
+4 more Renata Aquino, Emmanuelle Dubois, Regine Perzynski, Jerome Depeyrot
DOI: 10.1039/d6nr00200e
Cited by: 3
References: 68

Abstract

ions does not follow a monotonous trend with increasing Zinc content. We demonstrate that this specific cationic arrangement directly governs the saturation magnetization and magnetic anisotropy constants. By proposing a theoretical model based on the experimental cation distribution, we successfully predicted the saturation magnetization and magnetocrystalline anisotropy of the cores, finding excellent agreement with macroscopic magnetic measurements at 5 K. Furthermore, the discrepancy between the intrinsic core anisotropy and the effective anisotropy highlights the critical role of surface spin disorder and symmetry breaking in these confined nanostructures. These findings provide a robust pathway for decoding and tuning the magnetic performance of complex core@shell nanoarchitectures through structural design.

Fields of Study & Subjects

Magnetic Properties and Synthesis of Ferrites Nanoparticle-Based Drug Delivery Electromagnetic wave absorption materials

Publication details

Journal / source
Nanoscale
Publisher
Royal Society of Chemistry (RSC)
Volume
18
Issue
20
Pages
10711–10723
Publication date
1 January 2026
Language
EN