| Structural, dielectric, electrical, and leakage current properties of SrWO4 for electronic devices |
Sudhansu Sekhar Hota, Debasish Panda
, R. N. P. Choudhary |
| Department of Physics, Multifunctional Research Lab., S‘O’A, Bhubaneswar, 751030, India |
|
|
|
Received: March 6, 2024; Revised: July 8, 2024 Accepted: August 31, 2024. Published online: September 18, 2024. |
|
|
|
| ABSTRACT |
|
Using a standard ceramic technology (i.e., a solid-state reaction method), a strontium tungsten ceramic compound of a chemical formula SrWO4 (SWO) was fabricated. The compound was formed in tetragonal crystal symmetry (space group I41/a), as demonstrated by analyzing the room-temperature X-ray diffraction data. The calculated lattice parameters are; a = 5.4168 ± 0.0003 Å, b = 5.4168 ± 0.0003 Å, and c = 11.9510 ± 0.0016 Å with cell volume = 350.69 (Å)3. The grain and crystallite sizes, determined by diffraction (X-ray and electron) data, are 8.43 μm and 31 nm, respectively. Analysis of dielectric data has provided a high dielectric constant and a low tangent loss at room temperature, suggesting its capacitive and resistive characteristics. The existence of grain and grain boundary effects, as well as the negative temperature coefficient of resistance (NTCR) behavior, are confirmed by the impedance spectra analysis. The modulus study shows that relaxation is non-exponential and depends on dependent temperature conductivity. The leakage current characteristics indicate that the material exhibits Ohmic and space charge limited conduction (SCLC) conduction mechanisms at room temperature on varying electric field. The material is identified for the NTC-thermistor device by its essential characteristics. |
| Key words:
Solid state · SEM · Dielectric · NTCR · Ac conductivity |
|
|
| TOOLS |
 |
 PDF Links |
|
 Full text via DOI |
|
 Download Citation
|
|
Share: 
|
|
METRICS  |
|
|
|
| Related articles |
| Influence of Yb-doping on structural, dielectric and electrical properties of SrBi2Nb2O9 ceramics prepared through the molten-salt method 2024 November;61(6) |
| Stirring-mediated dielectric and ferroelectric response in perovskite BaTiO3 for multilayer capacitor applications 2024 July;61(4) |
| Structural, electrical, optical and magnetic properties of Bi2-xLaxFeCrO6 (x = 0.4, 0.6) double perovskites for device applications 2024 July;61(4) |
| Crystal structures, ferroelectric properties, and piezoelectric properties of Sn-doped epitaxial BaTiO3 thin films 2024 July;61(4) |
| Structural, microstructural, dielectric, transport, and optical properties of modified bismuth ferrite 2023 July;60(4) |
|
|
