论文标题
金属间ERPD $ _2 $ SI $ _2 $单晶的温度依赖性结构：合并的同步加速器和内部X射线衍射研究
Temperature-dependent structure of an intermetallic ErPd$_2$Si$_2$ single crystal: A combined synchrotron and in-house X-ray diffraction study
论文作者
论文摘要
我们已经种植了金属间的ERPD $ _2 $ si $ _2 $单晶使用浮动区方法的激光二极管。使用同步加速器和内部X射线粉末衍射测量值从20至500 K确定了温度依赖性的晶体学。衍射图与四方$ i $ 4/$ mmm $ $ $ $ $ $太空群（第139号）非常适合一个单位蜂窝。 Our synchrotron X-ray powder diffraction study shows that the refined lattice constants are $a$ = 4.10320(2) Å, $c$ = 9.88393(5) Å at 298 K and $a$ = 4.11737(2) Å, $c$ = 9.88143(5) Å at 500 K, resulting in the unit-cell volume $V$ = 166.408(1) Å$^3 $（298 K）和167.517（2）Å$^3 $（500 K）。在整个研究的温度范围内，我们找不到任何结构相变。冷却后，晶格常数A和C分别缩短和伸长。
We have grown intermetallic ErPd$_2$Si$_2$ single crystals employing laser-diodes with the floating-zone method. The temperature-dependent crystallography was determined using synchrotron and in-house X-ray powder diffraction measurements from 20 to 500 K. The diffraction patterns fit well with the tetragonal $I$4/$mmm$ space group (No. 139) with two chemical formulas within one unit cell. Our synchrotron X-ray powder diffraction study shows that the refined lattice constants are $a$ = 4.10320(2) Å, $c$ = 9.88393(5) Å at 298 K and $a$ = 4.11737(2) Å, $c$ = 9.88143(5) Å at 500 K, resulting in the unit-cell volume $V$ = 166.408(1) Å$^3$ (298 K) and 167.517(2) Å$^3$ (500 K). In the whole studied temperature range, we did not find any structural phase transition. Upon cooling, the lattice constants a and c are shortened and elongated, respectively.
