Article (Scientific journals)
Experimental and theoretical investigation of SrFe12O19 nanopowder for permanent magnet application
Abraime, Brahim; Ait tamerd, Mohamed; Mahmoud, Abdelfattah et al.
2017In Ceramics International
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Keywords :
strontium M-type hexagonal ferrites; Permanent magnet; Magnetic properties; Ab-initio calculations; Mossbauer spectroscopy
Abstract :
[en] Strontium M-type hexagonal ferrites were synthesized at different calcination temperatures (800 °C, 1000 °C and 1100 °C) using sol-gel autocombustion method. Thermogravimetric analysis (TGA), X-ray diffraction (XRD), scanning electron microscopy (SEM), Mössbauer spectroscopy (MS) and superconducting quantum interference device magnetometer (SQUID) techniques were used to characterize crystal structure, phase composition, morphology and magnetic properties. TGA gives T = 800 °C as beginning of suitable calcination. Hexaferrite structure of single phase is obtained according to XRD results for all samples with crystallite size between 28 nm and 35 nm. SEM images show the growth of grain size with increasing of annealing temperature. (BH)max is calculated based on SQUID results and shows an enhancement between T = 800 °C and T = 1000 °C of 25%. The magnetic properties observed at low temperature are explained and confirmed by ab-initio calculations
Disciplines :
Physics
Author, co-author :
Abraime, Brahim;  Materials and Nanomaterials Center, MAScIR (Moroccan Foundation for Advanced Science, Innovation and Research),
Ait tamerd, Mohamed;  Université Mohamed V, Rabat, Maroc
Mahmoud, Abdelfattah  ;  Université de Liège > Département de chimie (sciences) > LCIS - GreenMAT
Boschini, Frédéric ;  Université de Liège > Plateforme APTIS
Abdelilah, Benyoussef;  Materials and Nanomaterials Center, MAScIR (Moroccan Foundation for Advanced Science, Innovation and Research),
Hamedoun, Mohammed;  Materials and Nanomaterials Center, MAScIR (Moroccan Foundation for Advanced Science, Innovation and Research),
Xiao, Yinguo
El Kenz, Abdallah;  Université Mohamed V, Rabat, Maroc
Mounkachi, Omar;  Materials and Nanomaterials Center, MAScIR (Moroccan Foundation for Advanced Science, Innovation and Research),
Language :
English
Title :
Experimental and theoretical investigation of SrFe12O19 nanopowder for permanent magnet application
Publication date :
28 August 2017
Journal title :
Ceramics International
ISSN :
0272-8842
Publisher :
Elsevier, United Kingdom
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
RESIBAT n° 1510399
Funders :
Service public de Wallonie : Direction générale opérationnelle de l'économie, de l'emploi et de la recherche - DG06
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since 14 September 2017

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