Titre :

Effect of low amount Mn doping on structural and magnetic properties of SrFe12O19: Effective magnetic anisotropy study by Stoner - Wohlfarth model

Auteur(s) :

Omari, L.H. [Auteur]
University Hassan II [Casablanca]
Lekdadri, A. [Auteur]
University Hassan II [Casablanca]
Lassri, H. [Auteur]
University Hassan II [Casablanca]
Mentre, Olivier [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Minaud, C. [Auteur]
Institut Michel Eugène Chevreul - FR 2638 [IMEC]
Dhahri, E. [Auteur]
Université de Sfax
Jama, Charafeddine [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Unité Matériaux et Transformations (UMET) - UMR 8207

Titre de la revue :

Materials Today Communications

Pagination :

102257

Éditeur :

Elsevier BV

Date de publication :

2021-03-18

ISSN :

2352-4928

Mot(s)-clé(s) en anglais :

Strontium Hexaferrite
Sol-Gel Process
Magnetic and Structural Properties
Stoner-Wohlfarth Model
Effective Magnetic Anisotropy

Discipline(s) HAL :

Chimie/Matériaux
Chimie/Polymères

Résumé en anglais : [en]

A series of strontium hexaferrites (Sr-HF) compounds, doped with a low amount of manganese SrFe12-xMnxO19 (where x = 0.00, 0.03 and 0.05), were prepared by a sol-gel method. Structural and microstructural characterizations ...
Lire la suite >A series of strontium hexaferrites (Sr-HF) compounds, doped with a low amount of manganese SrFe12-xMnxO19 (where x = 0.00, 0.03 and 0.05), were prepared by a sol-gel method. Structural and microstructural characterizations were performed by X-ray diffraction (XRD) and scanning electronic microscopy (SEM) in order to determine some basic properties such as lattice parameters and particles size. Moreover, magnetic properties of the samples were measured in a temperature range from 2 to 900 K. The results show that the transition temperature (TC) decreases from 764 to 721 K with Mn doping at x = 0.05 content. Also, temperature and doping effects on the coercivity (Hc), the remanent magnetization (Mr) and the magnetization of saturation (MS) were discussed considering the Stoner - Wohlfarth model. A slight improvement of the magnetic properties (Hc =5.56 kOe, Mr =49.99 emu/g, MS =101.9 emu/g (i.e. 19.37 µB/u.f)) for low content (x = 0.03) is evidenced, yielding to promising material for permanent magnet devices. This improvement was explained by the relationship between the microstructure and to the effective magnetic anisotropy.Lire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Internationale

Vulgarisation :

Non

Établissement(s) :

Université de Lille
CNRS
INRA
ENSCL

Collections :

• Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
• Unité Matériaux et Transformations (UMET) - UMR 8207

Équipe(s) de recherche :

Ingénierie des Systèmes Polymères

Date de dépôt :

2021-03-22T15:35:34Z
2021-03-24T11:46:26Z