HIP synthesis of η-carbide-type nitrides Fe_3W_3N and Fe_6W_6N and their magnetic properties
HIP synthesis of η-carbide-type nitrides Fe_3W_3N and Fe_6W_6N and their magnetic properties
复制标题
HIP合成η-碳化物型氮化物Fe_3W_3N和Fe_6W_6N及其磁性能
DOI：
10.1016/j.jallcom.2011.07.025
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发表时间：
2011
影响因子：
6.2
通讯作者：
T.Waki
中科院分区：
文献类型：
--
作者：
Yasuto Hoshikawa;Eiichi Yasuda;Takashi Akatsu;Toru Onoda;Naota Sugiyama;Nobuhiro Matsushita;Takamasa Onoki;Masaru Akao;Yasuhiro Tanabe;Masahiro Yoshimura;Shengli Zhu;Xinmin Wang;Akihisa Inoue;瀬川浩代;T.Waki
我们已经成功地合成了铁钨氮化物使用热等静压（HIP）方法，并测量了它们的磁性能。在高压氮气气氛下，由金属元素直接合成了晶格常数分别为a=11.043（1）和10.937（2）的两种η-碳化物型铁钨氮化物。与其它η-碳化物型化合物类似，它们的组成可能是Fe_3W_3N和Fe_6W_6N。Fe_3 W_3 N是铁磁体，居里温度TC= 110 K，饱和磁矩PS=0.78μB/Fe; Fe_6 W_6 N是反铁磁体，Néel温度TN= 75 K，在25 T附近发生变磁转变。
We have succeeded in synthesising iron–tungsten nitrides using the hot isostatic pressing (HIP) method and have measured their magnetic properties. Two η-carbide-type iron–tungsten nitrides with lattice constants a=11.043(1) and 10.937(2)Å were synthesised directly from metal elements under high-pressure nitrogen gas. Their compositions are expected to be Fe3W3N and Fe6W6N in analogy with other η-carbide-type compounds. Fe3W3N is a ferromagnet with a Curie temperature TC=110K and a saturation moment PS=0.78μB/Fe, whereas Fe6W6N is an antiferromagnet with a Néel temperature TN=75K and shows a metamagnetic transition at around 25T.