Magnetic NanomaterialsNo Access

EFFECTS OF PROCESS CONTROL AGENTS ON THE SYNTHESIS OF NANO-CRYSTALLINE BARIUM HEXAFERRITE

Corrections for this article
- Erratum: “Effects of process control agents on the synthesis of nano-crystalline barium hexaferrite”

S. JAHANGIR

School of Metallurgy and Materials Engineering, University of Tehran, Tehran, Iran

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A. ATAIE

School of Metallurgy and Materials Engineering, University of Tehran, Tehran, Iran

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, and

R. NIKKHAH-MOSHAEE

School of Metallurgy and Materials Engineering, University of Tehran, Tehran, Iran

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https://doi.org/10.1142/S0217979208047985Cited by:1 (Source: Crossref)

Abstract

Nano size particles of barium hexaferrite were produced by conventional mixed oxide ceramic method from BaCO₃ and αFe₂O₃ as starting materials with a Fe/Ba molar ratio of 11. The mixture of precursors was intensively milled by high energy ball mill and the The influence of various process control agents (PCA) on the process has been investigated. Analysis of the XRD patterns indicates that PCA can strongly alter the morphology and phase composition of ball milled powder particles. In all milled samples, BaCO₃ completely decomposed and slight displacement of reflections of hematite phase due to the dissolving of various ions like Ba or C in its lattice is observed. Nano size particles exhibiting angular shape together with some amorphous structure were observed in the sample processed in the presence of NaCl. Barium hexaferrite magnetic phase was partially formed in sample milled in the presence of stearic acid.

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