The magnetic order in ${\mathrm{BaFe}}_2{\mathrm{Se}}_3$, an iron-based spin ladder that is superconducting under pressure, is intensely studied due to the intimate relation between magnetism and superconductivity. In the present paper, we have performed a comprehensive study of structural, magnetic, and electronic properties on $\mathrm{Ba}{\left({\mathrm{Fe}}_{1-x}{\mathrm{Ni}}_x\right)}_2{\mathrm{Se}}_3$ ($0\le x\le 0.2)$ and ${\mathrm{BaFe}}_2{\left({\mathrm{Se}}_{1-y}{\mathrm{Te}}_y\right)}_3$ $(0\le y\le 0.15)$. Neutron powder diffraction measurements were performed on the Ni-doped sample up to $x=0.1$ and ${\mathrm{BaFe}}_2{\left({\mathrm{Se}}_{0.85}{\mathrm{Te}}_{0.15}\right)}_3$. Our results show that the block magnetic order remains as the ground state for $x\le 0.05$ in $\mathrm{Ba}{\left({\mathrm{Fe}}_{1-x}{\mathrm{Ni}}_x\right)}_2{\mathrm{Se}}_3$. Additionally, for ${\mathrm{BaFe}}_2{\left({\mathrm{Se}}_{0.85}{\mathrm{Te}}_{0.15}\right)}_3$, the block magnetic structure is even more robust. As for the resistivity, it decreases with increasing Ni content while it barely changes with Te doping. The observed negligible change of the magnetic propagation wave vector as a function of Ni content seems to contradict the orbital selective Mott Phase proposed previously.

中文翻译：

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取代Ba(Fe1−xNix)2(Se1−yTey)3的输运和磁性能研究

磁序为${\mathrm{钡铁矿}}_2{硒}_3$，一种在压力下具有超导性的铁基自旋梯，由于磁性和超导性之间的密切关系而受到深入研究。在本文中，我们对结构、磁性和电子特性进行了全面的研究$巴{（{铁}_{1-X}{你}_X）}_2{硒}_3$($0\le X\le 0.2）$和${\mathrm{钡铁矿}}_2{（{硒}_{1-y}{碲}_y）}_3$ $（0\le y\le 0.15）$。对 Ni 掺杂样品进行中子粉末衍射测量，直至$X=0.1$和${\mathrm{钡铁矿}}_2{（{硒}_{0.85}{碲}_{0.15}）}_3$。我们的结果表明，块磁序仍然是基态$X\le 0.05$在$巴{（{铁}_{1-X}{你}_X）}_2{硒}_3$。另外，对于${\mathrm{钡铁矿}}_2{（{硒}_{0.85}{碲}_{0.15}）}_3$，块磁结构更加坚固。至于电阻率，随着Ni含量的增加而降低，而随着Te掺杂的增加几乎没有变化。观察到的磁传播波矢量随 Ni 含量变化的可忽略不计的变化似乎与先前提出的轨道选择性莫特相相矛盾。