在线阅读 --自然科学版 2020年4期《NiCo2O4外延薄膜的制备及其结构依赖的电输运性能》
NiCo2O4外延薄膜的制备及其结构依赖的电输运性能--[在线阅读]
张晓哲1, 甄聪棉2, 黄岩3
1. 西安工程大学 材料工程学院, 陕西 西安 710048;
2. 河北师范大学 物理学院, 河北 石家庄 050024;
3. 西安工业大学 理学院, 陕西 西安 710021
起止页码: 308--314页
DOI: 10.13763/j.cnki.jhebnu.nse.2020.04.005
摘要
采用脉冲激光沉积技术在不同衬底材料上沉积了NiCo2O4(111)外延薄膜,分别利用反射式高能电子衍射、X线衍射及原子力显微镜表征了NiCo2O4外延薄膜的晶体结构和表面特征,测试了2种不同衬底材料上NiCo2O4外延薄膜的电输运性质,分析了薄膜的电输运有效激活能与温度的关系.研究发现,2种不同衬底上NiCo2O4外延薄膜的电输运性质具有完全不同的特征,且均表现出好的导电性.所得研究结果可以为NiCo2O4薄膜在自旋电子器件中的应用提供重要的实验指导和现实参考.

Growth and Structural Effect on the Electrical Transport of Epitaxial NiCo2O4 Thin Film
ZHANG Xiaozhe1, ZHEN Congmian2, HUANG Yan3
1. School of Materials Science and Engineering, Xi'an Polytechnic University, Shaanxi Xi'an 710048, China;
2. College of Physics, Hebei Normal University, Hebei Shijiazhuang 050024, China;
3. School of Sciences, Xi'an Technological University, Shaanxi Xi'an 710021, China
Abstract:
The rich physical and chemical properties of NiCo2O4 have attracted a lot of attention all over the world,but its intrinsic electrical and magnetic properties and its application in spintronic devices are not well established,and the further studies are needed to address these questions.In this paper,it was used pulsed laser deposition to deposit epitaxial NiCo2O4(111) thin film on different substrates,and reflection high-energy electron diffraction,X-ray diffraction,and atomic force microscopy are employed to characterize the structure and surface features of NiCo2O4 epitaxial films.The electrical transport properties of NiCo2O4 epitaxial films on different substrates were investigated,and the relationship between the effective activation energy and temperature was analyzed.The study has found that the electrical transport properties of NiCo2O4 epitaxial films on different substrates possessed completely different features,while all of these NiCo2O4 thin films have very excellent electrical conductivity.This study will provide important experimental guidance and practical references for the application of NiCo2O4 films in spintronic devices.

收稿日期: 2020-01-08
基金项目: 西安工程大学博士科研启动基金(310/107020488);西安工业大学博士科研启动基金(0853-302020527)

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