Experimental and theoretical investigation of SrFe12O19 nanopowder for permanent magnet application

被引：27

作者：

Abraime, B. ^{[1
,2
]}

Tamerd, M. Ait ^{[2
]}

Mahmoud, A. ^{[3
]}

Boschini, F. ^{[3
]}

Benyoussef, A. ^{[1
,2
]}

Hamedoun, M. ^{[1
]}

Xiao, Y. ^{[4
,5
]}

El Kenz, A. ^{[2
]}

Mounkachi, O. ^{[1
]}

机构：

[1] MAScIR Moroccan Fdn Adv Sci Innovat & Res, Mat & Nanomat Ctr, BP 10100, Rabat, Morocco

[2] Mohammed V Univ, Fac Sci, Lab Condensed Matter & Interdisciplinary Sci LaMC, BP 1014, Rabat, Morocco

[3] Univ Liege, Inst Chem B6, CESAM, GREENMAT, B-4000 Liege, Belgium

[4] Streumethoden Forschungszentrum Julich GmbH, JCNS, Frankfurt, Germany

[5] Streumethoden Forschungszentrum Julich GmbH, PGI JCNS 2, PGI 4, Frankfurt, Germany

来源：

CERAMICS INTERNATIONAL | 2017年 / 43卷 / 17期

关键词：

Strontium M-type hexagonal ferrites; Permanent magnet; Magnetic properties; Ab-initio calculations; ANNEALING TEMPERATURE; ELECTRICAL-PROPERTIES; PARTICLES; COPRECIPITATION; NANOPARTICLES;

D O I：

10.1016/j.ceramint.2017.08.187

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Strontium M-type hexagonal ferrites were synthesized at different calcination temperatures (800 degrees C, 1000 degrees C and 1100 degrees C) using sol-gel autocombustion method. Thermogravimetric analysis (TGA), X-ray diffraction (XRD), scanning electron microscopy (SEM), Mossbauer 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 degrees 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 degrees C and T = 1000 degrees C of 25%. The magnetic properties observed at low temperature are explained and confirmed by ab-initio calculations.

引用

页码：15999 / 16006

页数：8

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