Effect of the heat treatment conditions on the synthesis of Sr-hexaferrite

被引：6

作者：

Martinez Garcia, R. ^{[1
]}

Bilovol, V. ^{[1
]}

Socolovsky, L. M. ^{[1
]}

机构：

[1] Univ Buenos Aires, Fac Ingn, Lab Solidos Amorfos INTECIN, Buenos Aires, DF, Argentina

来源：

PHYSICA B-CONDENSED MATTER | 2012年 / 407卷 / 16期

关键词：

Strontium hexaferrite; Heat treatment; Oxygen atmosphere; LOW-TEMPERATURE COMBUSTION; STRONTIUM HEXAFERRITE; BARIUM FERRITE; MAGNETIC-PROPERTIES; PARTICLES; SRFE12O19; POWDER;

D O I：

10.1016/j.physb.2011.12.038

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The effect of heat treatment conditions under oxygen atmosphere on the SrFe12O19 synthesis is analyzed. Effect of partial evacuation of decomposition gases of the organometallic precursor on the phase composition of different samples is studied. An accurate structural analysis of samples obtained between 250 degrees C and 600 degrees C is reported. From the structural analysis several secondary phases are identified. The amount of secondary phases can be manipulated through the control of the heat treatment conditions, and therefore, this constitutes a methodology to manipulate the composition and the magnetic properties of the obtained nanopowders. The quantitative determination of phases is performed by structural refinement of X-ray powder patterns, using Rietveld analysis. Magnetic study is done by magnetization vs. applied magnetic field at room temperature. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：3109 / 3112

页数：4

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