Abstract Two Fe–Ga alloys with 27 and 29% Ga additionally alloyed with boron (B) were studied using neutron diffraction, scanning electron microscopy with energy dispersive spectroscopy, and magnetostriction measurements. Neutron diffraction experiments demonstrated that the preponderant phase is the cubic Fe3Ga with structure D03. The lattice parameter of the Fe3Ga phase is much larger than the expected if the Ga composition of this phase is considered. The conclusion is that boron enters in the interstitial octahedral sites of the D03 lattice causing the lattice expansion, whose result is supported by ab initio calculations. Consequently, an increase on the magnetostriction is attributed to B located at the interstices that introduces local strains in the lattice. It is also suggested that the expansion of the lattice may increase Ga solubility in the D03 phase.

中文翻译：

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Fe-(27-29)Ga 合金中硼与 D03 相的相互作用

摘要 使用中子衍射、具有能量色散谱的扫描电子显微镜和磁致伸缩测量研究了两种具有 27% 和 29% Ga 合金的 Fe-Ga 合金（B）。中子衍射实验表明，优势相是具有 D03 结构的立方 Fe3Ga。如果考虑该相的 Ga 成分，则 Fe3Ga 相的晶格参数远大于预期。结论是硼进入 D03 晶格的间隙八面体位点导致晶格膨​​胀，其结果得到了 ab initio 计算的支持。因此，磁致伸缩的增加归因于位于空隙处的 B，它在晶格中引入了局部应变。