Oxide Nanostructures: Characterizations and Optical Bandgap Evaluations of Cobalt-Manganese and Nickel-Manganese at Different Temperatures
| Authors | C.R. Indulal1, G.S. Kumar1, A.V. Vaidyan2, R. Raveendran1 |
| Affiliations | 1 Department of Physics, S N College, Kollam, India 2 Department of Chemistry, St Stephens College, Pathanapuram, India |
| Е-mail | cr_indulal@yahoo.com |
| Issue | Volume 3, Year 2011, Number 1, Part 1 |
| Dates | Received 04 February 2011, in final form 18 March 2011, published online 23 March 2011 |
| Citation | C.R. Indulal, G.S. Kumar, A.V. Vaidyan, R. Raveendran, J. Nano- Electron. Phys. 3 No1, 170 (2011) |
| DOI | |
| PACS Number(s) | 61.46.Hk, 81.07.Bc |
| Keywords | Nanoparticles (70) , Arrested precipitation, SEM (114) , EDX (5) , Optical band gap (7) . |
| Annotation |
Cobalt-Manganese and Nickel-Manganese oxide (CoMnO and NiMnO) nanoparticles were prepared by chemical co-precipitation method by decomposition of their respective metal sulfides and sodium carbonate using ethylene diamene tetra acetic acid as the capping agent. The samples were heated at 400, 600 and 800 °C. The average particle sizes were determined from the X-ray line broadening. The diffractograms were compared with JCPDS data to identify the crystallographic phase and cubic structure of the particles. The samples were characterized by XRD, FTIR and UV analyses. The internal elastic micro strains were calculated and it was seen that as the particle size increases strain decreases. The FTIR studies have been used to confirm the metal oxide formation. The chemical compositions of the samples were verified using EDX spectra. The surface morphologies of the samples were studied from the SEM images. The absorption spectra of the materials in the UV-Vis-NIR range were recorded. From the analysis of the absorption spectra, the direct band gaps of the materials were calculated. |
|
List of References |
Other articles from this number
1) Laser Scribing Optimization of RF Magnetron Sputtered Molybdenum Thin Films [0009-0016]2) The Study of Microstructure of III-V Polar on Non-Polar Heterostructures by HRXRD [0017-0025]
3) Enhancement of NMP Degradation Under UV Light by Nitrogen-Doped TiO2 Thin Films Using a Design of Experiment [0026-0040]
4) Effect of Substrate Temperature on Structural and Morphological Parameters of ZnTe Thin Films [0041-0046]
5) Low Temperature Synthesis and Characterization of ZnTiO3 by Sol-Gel Method [0047-0052]
6) A Simple Sol-Gel Protocol Towards Synthesis of Semiconducting Oxide Nanomaterial [0053-0058]
7) Synthesis and Characterization of Co-Doped SnO2/TiO2 Semiconductor Nano Crystallites via Sol-Gel Method [0059-0066]
8) A Strategic Review of Reduction of Dislocation Density at the Heterogenious Junction of GAN Epilayer on Foreign Substrate [0067-0084]
9) Effect of PH on the Physical Properties of ZnIn2Se4 Thin Films Grown by Chemical Bath Deposition [0085-0091]
10) Synthesis and Characterization of Undoped and Co-Doped SnO2 Nanoparticles [0092-0100]
11) Substrate Temperature Effect on Structural Properties of Bi2Te3 Thin Films [0101-0105]
12) Deposition and Surface Modification of Low-K Thin Films for ILD Application in ULSI Circuits [0106-0110]
13) Synthesis and Characterisation of CdxZn1–xS Nanocomposite [0111-0116]
14) Structure, Optical and Electrical Characterization of Tin Selenide Thin Films Deposited at Room Temperature Using Thermal Evaporation Method [0117-0126]
15) Nano-Scale Patterning of Silicon Nanoparticles on Silicon Substrate by DIP-PEN-Nanolithography [0127-0131]
16) Synthesis and Characterization of ZnO Nanoparticles [0132-0139]
17) Fabrication of ZnxCd1–xSe Nanowires by cvd Process and Photoluminescence Studies [0140-0145]
18) Template Assisted Growth of Zinc Oxide-Based Nanowires by Electrochemical Deposition [0146-0150]
19) Kinetics Study of (Se80Te20)100-xCdx Glassy Alloy by Differential Thermal Analysis Using Non-Isothermal Technique [0151-0154]
20) A Study of the Evolution of the Silicon Nanocrystallites in the Amorphous Silicon Carbide Under Argon Dilution of the Source Gases [0155-0161]
21) Effects of Interfacial Charges on Doped and Undoped HfOx Stack Layer with Tin Metal Gate Electrode for Nano-Scaled CMOS Generation [0162-0169]
22) Synthesis and Characterization of Novel Nanocrystalline Zirconium (IV) Tungstate Semiconductor [0179-0184]
23) Effect of Annealing on Structure, Morphology, Electrical and Optical Properties of Nanocrystalline TiO2 Thin Films [0185-0192]
24) Study on Nanoparticles of ZnSe Synthesized by Chemical Method and Their Characterization [0193-0202]
25) MOCVD of Cobalt Oxide Using Co-Actylacetonate as Precursor: Thin Film Deposition and Study of Physical Properties [0203-0211]
