Fine Fe16N2 powder prepared by low-temperature nitridation

被引：45

作者：

Kikkawa, Shinichi ^{[1
]}

Yamada, Atushi ^{[1
]}

Masubuchi, Yuji ^{[1
]}

Takeda, Takashi ^{[1
]}

机构：

[1] Hokkaido Univ, Grad Sch Engn, Sapporo, Hokkaido 0608628, Japan

来源：

MATERIALS RESEARCH BULLETIN | 2008年 / 43卷 / 12期

基金：

日本学术振兴会;

关键词：

Nitrides; Chemical synthesis; Mossbauer spectroscopy; X-ray diffraction; Magnetic properties;

D O I：

10.1016/j.materresbull.2008.02.008

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

alpha-Fe was prepared by reduction of a fine gamma-Fe2O3 powder under hydrogen at 500 degrees C for 8 h. The alpha-Fe fine powder, about 100 nm in crystallite size, was then nitrided under an ammonia flow at 130 degrees C for 100 h. X-ray single-phase Fe16N2 was obtained with a magnetization value of 225 emu/g at room temperature under a magnetic field of 15 kOe. The Mossbauer spectrum at room temperature could be resolved into three sets of hyperfine fields with an average magnetic moment of 2.52 mu(B). An additional paramagnetic component was present in the spectrum with an area ratio of 19%. (c) 2008 Elsevier Ltd. All rights reserved.

引用

页码：3352 / 3357

页数：6

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