Influence of CeO2 layer thickness on the properties of CeO2/Gd2O3 multilayers prepared by pulsed laser deposition

被引:3
作者
Mishra, Maneesha [1 ,2 ]
Kuppusami, P. [3 ]
Reddy, V. R. [4 ]
Ghosh, C. [1 ]
Divakar, R. [1 ]
Ramaseshan, R. [5 ]
Singh, Akash [1 ]
Thirumurugesan, R. [1 ]
Mohandas, E. [1 ]
机构
[1] Indira Gandhi Ctr Atom Res, Mat Synth & Struct Characterisat Div, Phys Met Grp, Kalpakkam 603102, Tamil Nadu, India
[2] Univ Ulsan, Sch Mech Engn, Ulsan, South Korea
[3] Sathyabama Univ, Ctr Nanosci & Nanotechnol, Madras 600119, Tamil Nadu, India
[4] UGC DAE Consortium Sci Res, Indore, Madhya Pradesh, India
[5] Indira Gandhi Ctr Atom Res, Surface & Nano Sci Div, Kalpakkam 603102, Tamil Nadu, India
关键词
Multilayer; CeO2; Gd2O3; XRD; Optical properties; CERIA THIN-FILMS; OXIDE FUEL-CELLS; ELECTRICAL-PROPERTIES; COMPOSITE HARDNESS; OPTICAL-PROPERTIES; DOPED CERIA; TEMPERATURE; COATINGS; ZIRCONIA; GROWTH;
D O I
10.1016/j.vacuum.2014.12.009
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
CeO2/Gd2O3 multilayers were prepared on Si (100), quartz and inconel-783 substrates by pulsed laser deposition technique at an oxygen partial pressure of 2 Pa and substrate temperatures of 300 and 873 K. The layer thickness of CeO2 was varied from 5 to 30 nm, whereas Gd2O3 layer thickness was kept constant (similar to 10 nm). The phase and crystallite size of the films were characterized by X-ray diffraction (XRD), X-ray reflectivity (XRR), Raman spectroscopy, atomic force microscopy (AFM) and high resolution transmission electron microscopy (HRTEM) techniques. The layer thicknesses, measured by XRR as well as from HRTEM micrographs were in good agreement with each other. The CeO2/Gd2O3 multilayers show transmittance of similar to 70%. Nanoindentation measurements indicated that the hardness values of the multilayers were higher than that of single layers of CeO2 and Gd2O3 thin films. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码:64 / 74
页数:11
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