论文标题
la $ _ {1-x}的合成和属性
Synthesis and Properties of La$_{1-x}$Sr$_x$NiO$_3$ and La$_{1-x}$Sr$_x$NiO$_2$
论文作者
论文摘要
超导性已在la $ _ {1-x} $ sr $ _x $ nio $ _2 $的电影中实现。在这里，我们报告LA $ _ {1-x} $ sr $ _x $ nio $ _3 $和la $ _ {1-x} $ sr $ _x $ _x $ nio $ nio $ _2 $（$ 0 \ le x \ le x \ le x \ le x 0.2 $ 0.2 $）的综合和表征。磁化和电阻率测量表明，la $ _ {1-x} $ sr $ _x $ nio $ _3 $是promagnetic金属，la $ _ {1-x} $ sr $ _x $ _x $ nio $ _2 $均展示绝缘行为。在la $ _ {1-x} $ sr $ _x $ nio $ _2 $的批量样本中未检测到超导率。批量la $ _ {1-x} $ sr $ _x $ nio $ _2 $缺乏超导性可能是由于减少或少量的镍杂质而产生的氢氧化物。接口在La $ _ {1-x} $ sr $ _x $ nio $ _2 $的胶片中的效果也可能在超导性中起作用。
Superconductivity has been realized in films of La$_{1-x}$Sr$_x$NiO$_2$. Here we report synthesis and characterization of polycrystalline samples of La$_{1-x}$Sr$_x$NiO$_3$ and La$_{1-x}$Sr$_x$NiO$_2$ ($0\le x\le 0.2$). Magnetization and resistivity measurements reveal that La$_{1-x}$Sr$_x$NiO$_3$ are paramagnetic metals and La$_{1-x}$Sr$_x$NiO$_2$ exhibit insulating behavior. Superconductivity is not detected in bulk samples of La$_{1-x}$Sr$_x$NiO$_2$. The absence of superconductivity in bulk La$_{1-x}$Sr$_x$NiO$_2$ may be due to the generation of hydroxide during reduction or a small amount of nickel impurities. The effect of interface in films of La$_{1-x}$Sr$_x$NiO$_2$ may also play a role for superconductivity.
