Comment on “High-temperature soft magnetic properties of antiperovskite nitrides ZnNFe3 and AlNFe3” by Yankun Fu, Shuai Lin, and Bosen Wang, J. Magn. Magn. Mater. 378 (2015) 54–58
Comment on “High-temperature soft magnetic properties of antiperovskite nitrides ZnNFe3 and AlNFe3” by Yankun Fu, Shuai Lin, and Bosen Wang, J. Magn. Magn. Mater. 378 (2015) 54–58
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DOI：
10.1016/j.jmmm.2015.05.021
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发表时间：
2016-10
影响因子：
2.7
通讯作者：
T. Scholz;A. Leineweber;R. Dronskowski
中科院分区：
文献类型：
--
作者：
T. Scholz;A. Leineweber;R. Dronskowski
上述手稿的作者最近要求合成三元氮化物ZnNFe 3（= ZnFe 3 N）和AlNFe 3（= AlFe 3 N），二元相α ′-Fe 4 N的有序取代变体[1]。虽然这种类型的软铁磁体目前吸引了大量的关注，但它们的历史可以追溯到半个多世纪。特别地，Al取代的AlFe 3 N在1961年已经被提及[2]，并且AlFe 3 N的存在也在2009年被声称[3]来自结合高温烧结步骤和低温氮化反应的两步氨解反应[4]。尽管如此，我们中的一个人不得不撤回后一种说法，通过扫描电子显微镜和元素图谱，发现所有的“AlFe 3 N”样品都是由α '-Fe 4 N和无定形Al 2 O3的紧密固体混合物组成[5]。由此我们有充分的理由相信，文献[1]的作者忽略了我们的发现[5]，也没有合成ZnFe_3 N和AlFe_3 N。
The authors of the aforementioned manuscript have recently claimed the synthesis of the ternary nitrides ZnNFe3(=ZnFe3N) and AlNFe3(=AlFe3N), ordered substituted variants of the binary phase γ‘-Fe4N [1]. While soft ferromagnets of such kind are presently attracting lots of attention, their history dates back for more than half a century. In particular, Al-substituted γ‘-Fe4N has already been mentioned in 1961 [2], and the existence of AlFe3N has also been claimed in 2009 [3] from a two-step ammonolysis reaction combining a high-temperature sintering step and a low-temperature nitriding reaction [4]. Nonetheless, one of us had to withdraw the latter claim after finding out, by means of scanning-electron microscopy and elemental mapping, that all samples of “AlFe3N” consisted of an intimate solid mixture of γ‘-Fe4N and amorphous Al2O3[5]. From what follows, we have strong reasons to believe that the authors of Ref. [1] overlooked our findings [5] and also did not synthesize ZnFe3N and AlFe3N.