Single-Crystal Growth of a Perovskite Ruthenate SrRuO3 by the Floating-Zone Method
Single-Crystal Growth of a Perovskite Ruthenate SrRuO3 by the Floating-Zone Method
复制标题
浮区法单晶生长钙钛矿钌酸盐 SrRuO3
DOI：
--
复制
发表时间：
2015
期刊：
影响因子：
--
通讯作者：
Y. Maeno
中科院分区：
文献类型：
--
作者：
N. Kikugawa;R. Baumbach;J. Brooks;T. Terashima;S. Uji;Y. Maeno
本文报道了一种钙钛矿钌酸盐SrRuO3在红外成像炉上的单晶生长。通过使用冷阱进行生长，我们阻止了蒸发的RuO2覆盖在石英管的内表面，从而能够在生长过程中保持稳定的熔融区。粉末x射线和劳厄衍射测量证实了生长单晶的质量。晶体被切割成1.4 mm × 1.4 mm × 3.0 mm的矩形，通过磁化率、磁化率和比热测量来表征。晶体呈现铁磁转变，居里温度为163.5 K，矫顽力场低至0.004 t，剩余电阻率为1.05 μΩ cm，对应的剩余电阻率为192。这些结果表明生长的晶体是高质量的。电阻率测量显示温度平方行为，揭示费米液体类电子-电子散射占主导地位。在去……
We report single-crystal growth of a perovskite ruthenate SrRuO3 by the floating-zone method using an infrared image furnace. By employing a cold trap for the growth, we prevented the evaporated RuO2 from coating the inner surface of a quartz tube and were thereby able to maintain a stable molten zone during the growth. Powder X-ray and Laue diffraction measurements confirmed the quality of the grown single crystal. The crystal was cut into a 1.4 mm × 1.4 mm × 3.0 mm rectangle that was characterized by magnetic susceptibility, magnetization, and specific heat measurements. The crystal showed a ferromagnetic transition with a Curie temperature of 163.5 K, and the coercive field was as low as 0.004 T. The residual resistivity was 1.05 μΩ cm, corresponding to a residual resistivity ratio of 192. These results indicate that the grown crystal is high-quality. Electrical resistivity measurements show temperature-squared behavior, revealing that a Fermi-liquid-like electron–electron scattering is dominant. Toget...