Department of Physics, Group of Nanostructured Materials and their Applications, Universidad Nacional de, Colombia – Bogotá, Cra. 30 No. 45-03 Edificio 404 Lab. 121C Ciudad Universitaria, 11001, Colombia
Adv. Mater. Lett., 2017, 8 (5), pp 650-655
DOI: 10.5185/amlett.2017.7110
Publication Date (Web): Apr 04, 2017
Copyright © IAAM-VBRI Press
E-mail: adussanc@unal.edu.co
In this work, diluted magnetic semiconductor GaSb:Mn thin films were grown via DC magnetron Co-sputtering on glass substrates. The effect of synthesis parameters on the optical and structural properties was determined through spectral transmittance measurements and X-ray diffraction (XRD), respectively. Substrate temperature was changed from 373 to 523 K and layer thicknesses were obtained between 200 and 330 nm. All samples were subjected to annealing process to 623 K in situ. It was found that the optical constants (refractive index (n), absorption coefficient (a), extinction coefficient (k), and energy gap (E1)) are significantly affected by the temperature and target power used during the synthesis process. In particular, a variation of the energy gap between 0.58 and 0.98 eV was obtained when the target power of GaSb varied between 80 and 140 W. GaSb, Mn2Sb and SiO2 phases were observed for lowest values of target power, where SiO2 phase is a contribution of the substrate. The dielectric function of the compound with a dependence on synthesis parameters such as, the substrate temperature and deposition time was obtained, both real (e1) and imaginary part (e2). Analysis of the XRD measurements allowed to find that the (GaSb)Mn films grow with a mixture of the GaSb and Mn2Sb phases, and an amorphous halo associated with the glass substrate. A correlation between synthesis parameters and optical properties is presented. Diluted magnetic semiconductors, like GaSb:Mn, are considered among promising materials for the development of new spin-electronic devices, high speed quantum-mechanical in computational information, other more; in this case, studies on magnetic properties in digital alloys of GaSb/Mn can be realized around of the optimization of Curie temperature.
Celebrating 10th Years of Diamond Open Access Publishing in Advanced Materials
Cerebral Oxygenation Studies Through Near Infrared Spectroscopy: A Review
Analysis of Fine Sulfoaluminate Cement by Strength and Thermogravimetric Analysis
Characterization of the Interfacial Surface Energy for Composite Electrical Conduction Measurements using Two Full Range Percolation Threshold Models
Quantitative Detect of Fatigue of Membrane of Erythrocyte in Uniform Shear Field
Ecofriendly-developed Polyacrylic Acid-coated Magnetic Nanoparticles as Catalysts in Photo-fenton Processes
Evaluation of Drug Interactions with Medications Prescribed to Ambulatory Patients with Metabolic Syndrome in Urban Area
Fiber-reinforced Cementitious Composite: Sensitivity Analysis and Parameter Identification
Evaluation of Drug Utilization Patterns Based on World Health Organization Drug use Indicators at Outpatients Clinics
Are Quantitatively Micro-machined Scaffolds Effective for Cell Technology?
Synthesis and Characterization of Gold Nanoparticles from Lobelia Nicotianifolia Leaf Extract and its Biological Activities
Advanced Oxidations of Tartrazine Azo-dye
Antifungal Activity of Salvia jordanii Against the Oral Thrush Caused by the Cosmopolitan Yeast Candida albicans among Elderly Diabetic Type 2 patients
Advanced Materials Congress Celebrating 10th Years of Establishment
Secure Management of Networked Batteries for Building Integrated Photovoltaics (BIPV) Systems
The Cause of 100-year Low Carbonated Concrete of the Bridge
Organic Montmorillonite Intercalated Nano-composites Prevent Post-Surgical Associated Infections
Morphology/tensile Performance Relationship for LLDPE/PP Double Gated Injected Blends
Preparation and Characterization of Nickel Ferrite Nanoparticles via Sol-gel Method
Nitrogen-doped Diamond Nanowire Gas Sensor for the Detection of Methane
Manufacture of Functional Open-cell Al Foams with Recycled Al Scraps using NaCl Ball Space Holder
Vilsmeier-Haack Transformations under Non Classical Conditions
New Application of Highly Vesicular Basalt from Jabel Isbil Volcano (Dhamar-Rada'a Volcanic Field), Yemen
An Assessment of Tribological Characteristics under different Operating Condition
Functional Bi Coatings as A Perspective Material for Radiation Shields Production against Electron Radiation
Effects of Silica Modified NiFe2O4 on the Dielectric and Electrical Properties of NiFe2O4 filled Poly (methyl methacrylate) Composites
_1572929082.jpg)
Copyright ©2010-2020 VBRI Press
Full Article