论文标题
在SR $ _2 $ CRREO $ _6 $中，反相域边界之间的强大远程磁相关
Robust Long Range Magnetic Correlation across Anti-phase Domain Boundaries in Sr$_2$CrReO$_6$
论文作者
论文摘要
抗位点疾病是合成双钙钛矿用于旋转器应用的最重要问题之一。尽管众所周知，抗部位疾病会导致结构缺陷的增殖，即样品中分离有序的反相结构域分离有序的反相结构域的反相边界，但对于微观水平上这些反相边界的磁相关知识知之甚少。在此激励的情况下，我们报告了在SR $ _2 $ _2 $ crreo $ _6 $的薄膜样本中室温磁性和结构相关性的共振弹性X射线散射研究，该样本在双perovskites中具有最高的$ \ mathrm {t_c} $之一。从结构上讲，我们发现了样本中$ \ sim $ 15〜nm的抗相纳米域的存在。从磁性上讲，订购的矩显示出垂直于$ c $方向的位置。最值得注意的是，我们发现磁相关长度远远超过了单个抗相纳米构域的大小。因此，我们的结果为在SR $ _2 $ crreo $ _6 $中的反相边界上存在强大的磁相关性提供了结论性的证明。
Anti-site disorder is one of the most important issues that arises in synthesis of double perovskite for spintronic applications. Although it is known that anti-site disorder leads to a proliferation of structural defects, known as the anti-phase boundaries that separate ordered anti-phase domains in the sample, little is known about the magnetic correlation across these anti-phase boundaries on a microscopic level. Motivated by this, we report resonant elastic X-ray scattering study of room temperature magnetic and structural correlation in a thin-film sample of Sr$_2$CrReO$_6$, which has one of the highest $\mathrm{T_C}$ among double perovskites. Structurally, we discovered existence of anti-phase nanodomains of $\sim$15~nm in the sample. Magnetically, the ordered moments are shown to lie perpendicular to the $c$ direction. Most remarkably, we found that the magnetic correlation length far exceeds the size of individual anti-phase nanodomains. Our results therefore provide conclusive proof for existence of robust magnetic correlation across the anti-phase boundaries in Sr$_2$CrReO$_6$.
