Influence of annealing on the structural, optical and magnetic properties of CoO thin films

被引：3

作者：

Helen V. ^{[1
]}

Joseph Prince J. ^{[2
]}

机构：

[1] Department of Physics, Anjalai Ammal Mahalingam Engineering College, Kovilvenni

[2] Department of Physics, Anna University of Technology, Tiruchirapalli

来源：

Materials Research Innovations | 2019年 / 23卷 / 04期

关键词：

Cobalt oxide; FTIR; optical and magnetic properties; Raman analysis; thin films; XRD;

D O I：

10.1080/14328917.2017.1414110

中图分类号：

学科分类号：

摘要：

Cobalt oxide (CoO) nanoparticles have great potential in chemical and industrial sectors, specifically for fabricating energy storage devices. In this research, we have synthesised CoO nanocrystalline films by spray pyrolysis technique at room temperature followed by annealing at 150 and 300 °C. We have studied the influence of annealing on particle size, optical and magnetic properties of the CoO. Phase transition and nanocomposites of the CoO films were analysed by X-ray diffraction and SEM, and the as-deposited films were polycrystalline with random distribution in nature. In particular, the nanocrystalline films of cubic rock salt structure with the thickness ranging from 52 to 54 μm were attained under annealing. The particle size of the films increases from 26.1 to 34.8 nm with respect to the reduction of band gap from 3.2 to 3 eV, respectively. The uniform distribution of metal and its oxide nanoparticles exhibits a high saturation magnetisation (Ms) with antiferromagnetic super exchange nature. © 2017, © 2017 Informa UK Limited, trading as Taylor & Francis Group.

引用

页码：200 / 206

页数：6

共 43 条

[1]

Troitino N.F., Vinas S.L., Gonzalez B.R., Et al., Room-temperature ferromagnetism in antiferromagnetic cobalt oxide nanooctahedra, Nano Lett, 14, 2, pp. 640-647, (2014)

[2]

Nam H.J., Sasaki T., Koshizaki N.J., Optical CO gas sensor using a cobalt oxide thin film prepared by pulsed laser deposition under various argon pressures, J Phys Chem B, 110, 46, pp. 23081-23084, (2006)

[3]

Wang Y.Q., Yang C.M., Schmidt W., Et al., Weakly ferromagnetic ordered mesoporous Co 3 O 4 synthesized by nanocasting from vinyl-functionalized cubic Ia3d mesoporous silica , Adv Mater, 17, 1, pp. 53-56, (2005)

[4]

Li W.Y., Xu L.-N., Chen J., Co 3 O 4 nanomaterials in lithium-ion batteries and gas sensors , Adv Funct Mater, 15, 5, pp. 851-857, (2005)

[5]

Wang H., Mao N., Shi J., Et al., Cobalt oxide-carbon nanosheet nanoarchitecture as an anode for high-performance lithium-ion battery, ACS Appl Mater Interf, 7, 4, pp. 2882-2890, (2015)

[6]

Shen C., Wen Z., Wang F., Et al., Cobalt-metal-based cathode for lithium–oxygen battery with improved electrochemical performance, ACS Catal, 6, 7, pp. 4149-4153, (2016)

[7]

Wang X., Peng Q., Zhu W., Et al., High performance of inverted polymer solar cells with cobalt oxide as hole-transporting layer, Semicond Sci Technol, 30, 5, (2015)

[8]

Salunkhe R.R., Tang J., Kamachi Y., Et al., Asymmetric supercapacitors using 3D nanoporous carbon and cobalt oxide electrodes synthesized from a single metal–organic framework, ACS Nano, 9, 6, pp. 6288-6296, (2015)

[9]

Kandalkar S.G., Lokhande C.D., Mane R.S., Et al., A non-thermal chemical synthesis of hydrophilic and amorphous cobalt oxide films for supercapacitor application, Appl Surf Sci, 253, 8, pp. 3952-3956, (2007)

[10]

Deng X., Tuysuz H., Cobalt-oxide-based materials as water oxidation catalyst: recent progress and challenges, ACS Catal, 4, 10, pp. 3701-3714, (2014)

← 1 2 3 4 5 →