Electrical conductivity and infrared ray photoconductivity for lattice distorted SmNiO3 perovskite oxide film

Hai-Yang Hu; Ji-Kun Chen; Fei Shao; Yong Wu; Kang-Kang Meng; Zhi-Peng Li; Jun Miao; Xiao-Guang Xu; Jia-Ou Wang; Yong Jiang

doi:10.7498/aps.68.20181513

Journals >Acta Physica Sinica >Volume 68 >Issue 2 >Page 026701-1 > Article

Acta Physica Sinica
Vol. 68, Issue 2, 026701-1 (2019)

Electrical conductivity and infrared ray photoconductivity for lattice distorted SmNiO3 perovskite oxide film

Hai-Yang Hu¹, Ji-Kun Chen^1、*, Fei Shao¹, Yong Wu¹, Kang-Kang Meng¹, Zhi-Peng Li¹, Jun Miao¹, Xiao-Guang Xu¹, Jia-Ou Wang², and Yong Jiang¹

Author Affiliations

¹College of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China

²Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China

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DOI: 10.7498/aps.68.20181513 Cite this Article

Hai-Yang Hu, Ji-Kun Chen, Fei Shao, Yong Wu, Kang-Kang Meng, Zhi-Peng Li, Jun Miao, Xiao-Guang Xu, Jia-Ou Wang, Yong Jiang. Electrical conductivity and infrared ray photoconductivity for lattice distorted SmNiO3 perovskite oxide film [J]. Acta Physica Sinica, 2019, 68(2): 026701-1 Copy Citation Text

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Perovskite structure of SmNiO3 crystal: (a) Polyhedron form of structure; (b) the stick form of structure.SmNiO3晶体的钙钛矿结构 (a) 结构的多面体形式; (b) 结构的球棍形式

Fig. 1. Perovskite structure of SmNiO₃ crystal: (a) Polyhedron form of structure; (b) the stick form of structure. SmNiO₃晶体的钙钛矿结构　(a) 结构的多面体形式; (b) 结构的球棍形式

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XRD patterns and (114) RSM diagram of SmNiO3 films grown on different substrates: (a) SrTiO3 (XRD); (b) LaAlO3 (XRD); (c) SrTiO3 (RSM); (d) LaAlO3 (RSM).不同基底上生长的SmNiO3薄膜的XRD 图谱和 RSM 图 (a) SrTiO3 （XRD）; (b) LaAlO3 （XRD）; (c) SrTiO3 （RSM）; (d) LaAlO3 （RSM）

Fig. 2. XRD patterns and (114) RSM diagram of SmNiO₃ films grown on different substrates: (a) SrTiO₃ (XRD); (b) LaAlO₃ (XRD); (c) SrTiO₃ (RSM); (d) LaAlO₃ (RSM). 不同基底上生长的SmNiO₃薄膜的XRD 图谱和 RSM 图　(a) SrTiO₃ （XRD）; (b) LaAlO₃ （XRD）; (c) SrTiO₃ （RSM）; (d) LaAlO₃ （RSM）

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Fig. 3. Resistivity temperature curves of SNO thin films on different substrates: (a) SrTiO₃; (b) LaAlO₃. 不同基体上的SNO薄膜的电阻率-温度曲线　(a) SrTiO₃; (b) LaAlO₃

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Fig. 4. Fitting results of transmittance of SmNiO₃ thin films on different substrates: (a) LaAlO₃, (b) SrTiO₃; the relation curve of the real part of the optical conductivity and wave number of SmNiO₃ film: (c) LaAlO₃, (d) SrTiO₃. 不同基体上的SmNiO₃薄膜透射率的拟合结果 (a) LaAlO₃, (b) SrTiO₃; 不同基体上的SmNiO₃薄膜的光电导率实部与波数的关系曲线 (c) LaAlO₃, (d) SrTiO₃

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Fig. 5. The Ni—O—Ni bond angle and the rotation of NiO₆ when the SmNiO₃ film on different substrates transform from insulating state to metal state: (a) LaAlO₃; (b) SrTiO₃; (c) SmNiO₃ film electron band transition diagram. 不同衬底上的SmNiO₃薄膜发生金属绝缘转变时Ni—O—Ni键角及NiO₆八面体的旋转状态　(a) LaAlO₃; (b) SrTiO₃; (c) SmNiO₃薄膜的电子能带跃迁图

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Fig. 6. Absorption spectra of SmNiO₃/SrTiO₃ (001) and SmNiO₃/LaAlO₃ (001) films: (a) K-edge absorption spectrum of O element; (b) L-edge absorption spectrum of Ni element. SmNiO₃/SrTiO₃ (001) 和 SmNiO₃/LaAlO₃ (001)薄膜的元素吸收谱　(a) O元素L-边吸收谱; (b) Ni元素K-边吸收谱

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LaAlO₃ ( \begin{document}$\omega_\infty$\end{document} = 3.36)
#	\begin{document}$\omega_{\rm o}$\end{document}	\begin{document}$\omega_{\rm p}$\end{document}	\begin{document}$\gamma$\end{document}	( \begin{document}$\omega_{\rm p}/\omega_{\rm o}$\end{document})²	\begin{document}$\gamma/\omega_{\rm o}$\end{document}
1	−1.57 × 10⁴	1.94 × 10¹	−6.05 × 10⁴	1.53 × 10⁻⁶	3.86
2	6.73 × 10³⁹	1.27 × 10³⁵	9.41 × 10⁶⁸	5.82 × 10⁻¹⁰	−4.15 × 10²⁸
3	1.09 × 10³	4.23 × 10²	8.11 × 10²	1.52 × 10⁻¹	7.46 × 10⁻¹
4	1.72 × 10³	3.97 × 10²	1.47 × 10³	5.34 × 10⁻²	8.52 × 10⁻¹
5	9.55 × 10¹⁴	7.07 × 10¹⁴	7.09 × 10²³	1.51 × 10⁻¹	−2.46 × 10⁸
6	5.39 × 10¹⁴	9.37 × 10¹⁴	9.02 × 10²³	3.38 × 10⁻²	3.70 × 10⁸
SrTiO₃ ( \begin{document}$\omega_\infty$\end{document} = 3.07)
#	\begin{document}$\omega_{\rm o}$\end{document}	\begin{document}$\omega_{\rm p}$\end{document}	\begin{document}$\gamma$\end{document}	( \begin{document}$\omega_{\rm p}/\omega_{\rm o}$\end{document})²	\begin{document}$\gamma/\omega_{\rm o}$\end{document}
1	7.04 × 10¹	9.99 × 10¹	9.95	2.02	1.41 × 10⁻¹
2	1.50 × 10²	9.98 × 10¹	9.73	4.43 × 10⁻¹	6.49 × 10⁻²
3	3.64 × 10⁴³	1.80 × 10³⁷	−1.00 × 10⁷⁰	3.38 × 10⁻¹²	−2.97 × 10²⁹
4	1.18 × 10¹	2.80 × 10²	4.63	5.61 × 10²	3.91 × 10⁻¹
5	4.27 × 10²	2.56 × 10²	3.50 × 10¹	3.61 × 10⁻¹	8.20 × 10⁻²
6	3.75 × 10²	2.55 × 10²	4.06 × 10¹	4.63 × 10⁻¹	1.08 × 10⁻¹
7	4.29 × 10⁹	3.99 × 10⁹	8.32 × 10¹²	3.54 × 10⁻²	9.20 × 10²
8	2.68 × 10⁸	2.88 × 10⁹	1.00 × 10¹⁴	1.81 × 10⁻¹	9.91 × 10³
9	3.28 × 10⁹	3.11 × 10⁹	2.30 × 10¹⁰	4.29 × 10⁻²	3.36 × 10³
10	4.70 × 10⁹	2.85 × 10⁹	9.42 × 10¹³	8.26 × 10⁻²	6.58 × 10³

Table 1.

Lorentz fitted parameters of transmittance of SmNiO₃ thin films on different substrates.

不同基体上的SmNiO₃薄膜透射率的Lorentz拟合参数

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