Magnetic, electronic, and structural characterization of nonstoichiometric iron oxides at the nanoscale

被引：342
|
作者：
Redl, FX
Black, CT
Papaefthymiou, GC
Sandstrom, RL
Yin, M
Zeng, H
Murray, CB
O'Brien, SP
机构：
[1] IBM Corp, Thomas J Watson Res Ctr, Nanoscale Mat & Devices, Yorktown Hts, NY 10598 USA
[2] Villanova Univ, Villanova, PA 19085 USA
[3] Columbia Univ, Dept Appl Phys & Appl Math, New York, NY 10027 USA
来源：
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2004年 / 126卷 / 44期
关键词：
D O I：
10.1021/ja046808r
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
We have investigated the structural, magnetic, and electronic properties of nonstoichiometric iron oxide nanocrystals prepared by decomposition of iron(II) and iron(0) precursors in the presence of organic solvents and capping groups. The highly uniform, crystalline, and monodisperse nanocrystals that were produced enabled a full structural and compositional survey by electron microscopy and X-ray diffraction. The complex and metastable behavior of nonstoichiometric iron oxide (wustite) at the nanoscale was studied by a combination of Mossbauer spectroscopy and magnetic characterization. Deposition from hydrocarbon solvents with subsequent self-assembly of iron oxide nanocrystals into superlattices allowed the preparation of continuous thin films suitable for electronic transport measurements.
引用
收藏
页码：14583 / 14599
页数：17
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