Effect of low amount Mn doping on structural ...
Document type :
Article dans une revue scientifique
Permalink :
Title :
Effect of low amount Mn doping on structural and magnetic properties of SrFe12O19: Effective magnetic anisotropy study by Stoner - Wohlfarth model
Author(s) :
Omari, L.H. [Auteur]
Lekdadri, A. [Auteur]
Lassri, H. [Auteur]
Mentre, Olivier [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Minaud, C. [Auteur]
Institut Michel Eugène Chevreul - FR 2638 [IMEC]
Dhahri, E. [Auteur]
Université de Sfax
Jama, Charafeddine [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207
Unité Matériaux et Transformations - UMR 8207 [UMET]
Lekdadri, A. [Auteur]
Lassri, H. [Auteur]
Mentre, Olivier [Auteur]

Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Minaud, C. [Auteur]
Institut Michel Eugène Chevreul - FR 2638 [IMEC]
Dhahri, E. [Auteur]
Université de Sfax
Jama, Charafeddine [Auteur]

Unité Matériaux et Transformations (UMET) - UMR 8207
Unité Matériaux et Transformations - UMR 8207 [UMET]
Journal title :
Materials Today Communications
Pages :
102257
Publisher :
Elsevier BV
Publication date :
2021-03-18
ISSN :
2352-4928
English keyword(s) :
Strontium Hexaferrite
Sol-Gel Process
Magnetic and Structural Properties
Stoner-Wohlfarth Model
Effective Magnetic Anisotropy
Sol-Gel Process
Magnetic and Structural Properties
Stoner-Wohlfarth Model
Effective Magnetic Anisotropy
HAL domain(s) :
Chimie/Matériaux
Chimie/Polymères
Chimie/Polymères
English abstract : [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 ...
Show more >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.Show less >
Show more >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.Show less >
Language :
Anglais
Peer reviewed article :
Oui
Audience :
Internationale
Popular science :
Non
Administrative institution(s) :
Université de Lille
CNRS
INRA
ENSCL
CNRS
INRA
ENSCL
Collections :
Research team(s) :
Ingénierie des Systèmes Polymères
Submission date :
2021-03-22T15:35:34Z
2021-03-24T11:46:26Z
2021-03-24T11:46:26Z