Microstructure and magnetic properties of commercial barium ferrite powders

• Autorzy: Nowosielski R. , Babilas R. , Wrona J.
• Konferencja: 12th International Scientific Conference CAM3S'2006, 27-30th November 2006, Gliwice-Zakopane
• Języki publikacji: EN

Abstrakty

EN

Purpose: Microstructural and magnetic properties analysis of commercial barium ferrite powder BaFe12O19. Design/methodology/approach: The X-ray diffraction methods were utilized not only for qualitative and quantitative phase analysis of studied powder sample, but also for the determination of lattice parameters, crystallite size and the lattice distortion. The Rietveld method was used in the verification of the qualitative phase composition and in the determination of phase abundance. Hill and Howard procedure was applied for quantitative phase analysis. The parameters of the individual diffraction line profiles were determined by PRO-FIT Toraya procedure. The morphology of barium ferrite powders was analyzed using the scanning electron microscopy (SEM) method. The distribution of powder particles was determined by a laser particle analyzer. Moreover, the magnetic hysteresis loop of examined powder material were measured by resonance vibrating sample magnetometer (R-VSM). Findings: The X-ray diffraction analysis revealed the presence of hexagonal BaFe12O19 and rhombohedral Fe2O3 phases in examined powder samples. The barium ferrite phase appeared to be the main component of the samples (97.8 wt.%). The crystallite size of BaFe12O19 phase is above 100 nm. The size of studied powders is in the range from 0.2 to 40.5 micrometres. The arithmetic mean diameter of BaFe12O19 powders population is 10.335 micrometres. The SEM images showed irregular shape and size of powder particles. The coercive force (HC) obtained from hysteresis loop has a value about 159 kA/m. Practical implications: Structure analysis of commercial barium ferrite powder is helpful to prepare this material by laboratory methods. Originality/value: The obtained results of investigations by different methods of structure characterization confirm their utility in the microstructure analysis of powder materials.

Słowa kluczowe

EN

X-ray phase analysis; Rietveld method; SEM; R-VSM; powder; magnetic properties

PL

analiza fazowa; promieniowanie rentgenowskie; metoda Rietvelda; SEM; scanning electron microscopy; R-VSM; proszek; właściwości magnetyczne

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2007
• Tom: Vol. 20, nr 1-2
• Strony: 307--310
• Opis fizyczny: Bibliogr. 15 poz., fot., rys., tab.

Twórcy

autor

Nowosielski R.

autor

Babilas R.

autor

Wrona J.

• Division of Nanocrystalline and Functional Materials and Sustainable Pro-ecological Technologies, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Konarskiego 18 a, 44-100 Gliwice, Poland,

Bibliografia

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