论文标题
Sr（n+1）ir（n）o（3n+1）[n = 1，2，无穷大]晶体的通量生长
Flux growth of Sr(n+1)Ir(n)O(3n+1) [n=1, 2, infinity] crystals
论文作者
论文摘要
虹膜液的单晶通常是通过磁通量方法生长的，该方法远高于SRCL2溶剂的沸点。这导致非平衡生长条件，并大大缩短了昂贵的PT坩埚的寿命。在这里，我们通过在其沸点以下的无水SRCL2通量，以可重现的方式报告SR2IRO4，SR3IR2O7和SRIRO3单晶的生长。我们表明，不同阶段的产量在很大程度上取决于固定浸泡温度和冷却速率的营养/溶剂比。使用这种低温生长方法通常会导致对磁敏感性的温度独立贡献低于先前报道的磁化率。 SRIRO3的晶体表现出一种顺磁行为，与先前的报道相比，可以非常适合居里 - 韦斯法律产生物理合理的参数。因此，与先前报道的生长方案相比，将浸泡温度降低到溶剂沸点以下不仅提供了更稳定和可控的生长条件，而且还大大延长了昂贵的铂金坩埚的寿命，并降低了标准炉的加热和热量的腐蚀，从而降低了生长成本。
Single crystals of iridates are usually grown by a flux method well above the boiling point of the SrCl2 solvent. This leads to non-equilibrium growth conditions and dramatically shortens the lifetime of expensive Pt crucibles. Here, we report the growth of Sr2IrO4, Sr3Ir2O7 and SrIrO3 single crystals in a reproducible way by using anhydrous SrCl2 flux well below its boiling point. We show that the yield of the different phases strongly depends on the nutrient/solvent ratio for fixed soak temperature and cooling rate. Using this low-temperature growth approach generally leads to a lower temperature-independent contribution to the magnetic susceptibility than previously reported. Crystals of SrIrO3 exhibit a paramagnetic behavior that can be remarkably well fitted with a Curie-Weiss law yielding physically reasonable parameters, in contrast to previous reports. Hence, reducing the soak temperature below the solvent boiling point not only provides more stable and controllable growth conditions in contrast to previously reported growth protocols, but also extends considerably the lifetime of expensive platinum crucibles and reduces the corrosion of heating and thermoelements of standard furnaces, thereby reducing growth costs.
