کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1792554 | 1023649 | 2010 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Lu5Ir4Si10 whiskers: Morphology, crystal structure, superconducting and charge density wave transition studies Lu5Ir4Si10 whiskers: Morphology, crystal structure, superconducting and charge density wave transition studies](/preview/png/1792554.png)
Highly perfect single crystal whiskers of Lu5Ir4Si10 were successfully grown out of the melt. Details of the surface and morphology of the whiskers are presented. X-ray diffraction data confirmed that the whisker structure has the same tetragonal P4/mbm space group symmetry as bulk single crystals with lattice parameters a=12.484(1) and c=4.190(2) Å. By means of field emission scanning electron microscopy, the morphology of the whiskers has been studied. Using a 4-circle X-ray diffractometer we found that whiskers grow along the c-axis direction and all side faces are oriented along the [1 1 0] direction. The mosaicity has been measured and is found to be almost perfect: below 0.15° along the c-axis. According to our transport measurements performed along the c-axis, the whiskers present a sharp superconducting transition at Tc=4.1 K and show a charge density wave (CDW) transition at 77 K. From the hysteresis of the temperature dependance of the electrical resistivity study, the CDW transition is found to be of first order.
Journal: Journal of Crystal Growth - Volume 312, Issue 21, 15 October 2010, Pages 3204–3208