التفاصيل البيبلوغرافية
| العنوان: |
Electronic phase diagram of oxygen-deficient SmNiO3−δ epitaxial thin films. |
| المؤلفون: |
Bin-Jie Chen, Yan Sun, Nan Yang, Ni Zhong, Yuan-Yuan Zhang, Wei Bai, Lin Sun, Xiao-Dong Tang, Ping-Xiong Yang, Ping-Hua Xiang, Chun-Gang Duan |
| المصدر: |
Journal of Physics D: Applied Physics; 6/14/2017, Vol. 50 Issue 23, p1-1, 1p |
| مصطلحات موضوعية: |
EPITAXY, METALLIC thin films, PHASE diagrams |
| مستخلص: |
Epitaxial SmNiO3−δ thin films were fabricated under various oxygen partial pressures () on (0 0 1)-oriented LaAlO3 substrates by using the pulsed laser deposition method. Continuous control of the metal–insulator transition temperature (TMI) from 350 K to 85 K was achieved by varying from 26 Pa to 0.5 Pa. The reduction of TMI can be attributed to the straightening-out of the out-of-plane Ni–O–Ni bond angle due to the elongation of unit cell volume with decreasing . When > 3 Pa, resistivity anomalies around 200 K are observed in the insulating phase of strained SmNiO3−δ films, suggesting the onset of antiferromagnetic ordering of the Ni sublattices. An electronic phase diagram of the oxygen-deficient SmNiO3−δ films has been established in this work based on the results of the transport measurements. [ABSTRACT FROM AUTHOR] |
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