节点文献
氧非正分La0.9Ba0.1MnO3-δ/SrTiO3:Nbp-n异质结的整流特性研究
The study on the rectifying properties of oxygen non-stoichiometric La0.9Ba0.1MnO3-δ/SrTiO3:Nb p-n heterojunction
【摘要】 利用脉冲激光沉积技术在掺Nb的SrTiO3衬底上制备了氧非正分La0.9Ba0.1MnO3-δ/SrTiO3:Nbp-n异质结.在20—300K这一较宽的温度范围内获得了光滑的整流曲线.整流实验表明:该p-n异质结的正向扩散电压VD随着温度升高在薄膜金属—绝缘转变温度附近出现极大值,表现出与氧正分La0.9Ba0.1MnO3/SrTiO3:Nbp-n结截然不同的温度特性.结合薄膜的电阻-温度实验和能带计算结果,对这一奇异的现象进行了解释.
【Abstract】 The La 0.9 Ba 0.1 MnO 3-δ /SrTiO3:Nb p-n heterojunctions have been fabricated by growing the oxygen nonstoichiometric La 0.9 Ba 0.1 MnO 3-δ thin film on the Nb doped SrTiO3 substrate with pulsed laser deposition. The good rectifying curves have been demonstrated in the temperature range of 20—300 K. The diffusion voltage VD exhibits a maximum near the transition temperature of La 0.9 Ba 0.1 MnO 3-δ thin film, which is different to the observation in the oxygen stoichiometric La 0.9 Ba 0.1 MnO3/SrTiO3:Nb p-n heterojunction. The interesting phenomenon has been well explained with the resistance-temperature experiment of La0.9Ba0.1MnO 3-δ thin film and energy band calculations.
【Key words】 La0.9Ba0.1MnO 3-δ thin films; manganite p-n junction; rectifying properties;
- 【文献出处】 物理学报 ,Acta Physica Sinica , 编辑部邮箱 ,2008年01期
- 【分类号】TN35
- 【被引频次】5
- 【下载频次】162