Topochemical growth of textured polycrystalline barium hexaferrite from oriented antiferromagnetic α-FeOOH nanorods

被引：13

作者：

Chen, Yajie ^{[1
,2
]}

Fitchorov, Trifon ^{[1
,2
]}

Gao, Jinsheng ^{[1
,2
]}

Koblischka-Veneva, A. ^{[3
]}

Koblischka, M. R. ^{[4
]}

Vittoria, C. ^{[1
,2
]}

Harris, V. G. ^{[1
,2
]}

机构：

[1] Northeastern Univ, Dept Elect & Comp Engn, Boston, MA 02115 USA

[2] Northeastern Univ, Ctr Microwave Magnet Mat & Integrated Circuits, Boston, MA 02115 USA

[3] Univ Saarland, Inst Funct Mat, D-66123 Saarbrucken, Germany

[4] Univ Saarland, Inst Expt Phys, D-66123 Saarbrucken, Germany

来源：

NANOTECHNOLOGY | 2009年 / 20卷 / 44期

关键词：

D O I：

10.1088/0957-4484/20/44/445606

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Nanorods of goethite, i.e. alpha-FeOOH, were mixed with BaCO3, dispersed in a polymer solution, and oriented under a 90 kOe magnetic field during polymerization. The orientation arose principally from the interaction of the magnetic field with the anisotropic antiferromagnetism of the goethite particles. The oriented antiferromagnetic particles act as seeds for the topochemical growth of BaFe12O19 ferrite grains along the [0001] direction. The degree of grain orientation was determined using magnetic measurements and orientation distribution functions and pole figures determined by electron backscatter diffraction analysis.

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页数：6

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