Thermo-dielectric, humidito-dielectric, and humidity sensing properties of barium monoferrite and barium hexaferrite nanoparticles
Barium monoferrite and M−type hexaferrite with generic formulae BaFe2O4 and BaFe12O19 were synthesized using the sol–gel method by annealing at 1000 °C. To confirm the phase and compositions, XRD and FTIR analyses were employed, and the formation of orthorhombic crystal structure of BaFe2O4 and hexa...
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| Format: | Article |
| Language: | English |
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Elsevier
2022-11-01
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| Series: | Results in Physics |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2211379722005769 |
| _version_ | 1798029269836759040 |
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| author | Sarwar Hasan Bruska Azhdar |
| author_facet | Sarwar Hasan Bruska Azhdar |
| author_sort | Sarwar Hasan |
| collection | DOAJ |
| description | Barium monoferrite and M−type hexaferrite with generic formulae BaFe2O4 and BaFe12O19 were synthesized using the sol–gel method by annealing at 1000 °C. To confirm the phase and compositions, XRD and FTIR analyses were employed, and the formation of orthorhombic crystal structure of BaFe2O4 and hexagonal crystal structure of BaFe12O19 were observed. The surface morphology of the samples was investigated through the use of the scanning electron micrograph (SEM) technique. Energy dispersive X-ray spectroscopy (EDS) confirmed the chemical compositions of the samples. At room temperature, the real part of the dielectric constant (ɛʹ), the imaginary part of the dielectric constant (ɛʹʹ), the dielectric loss tangent (tanδ), and AC conductivity (σAC) were measured at the specific frequencies (1, 1.5, and 2 MHz), and they were increased with both temperature and relative humidity (RH). Barium ferrite humidity sensors were created. The resistance of the sensor goes down as the RH% goes up, and the BaFe12O19 humidity sensor is 1.82 times more sensitive than the BaFe2O4 sensor. |
| first_indexed | 2024-04-11T19:21:27Z |
| format | Article |
| id | doaj.art-d7b5e8c23f2a49eeb170cd326d0ea7aa |
| institution | Directory Open Access Journal |
| issn | 2211-3797 |
| language | English |
| last_indexed | 2024-04-11T19:21:27Z |
| publishDate | 2022-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Physics |
| spelling | doaj.art-d7b5e8c23f2a49eeb170cd326d0ea7aa2022-12-22T04:07:17ZengElsevierResults in Physics2211-37972022-11-0142105962Thermo-dielectric, humidito-dielectric, and humidity sensing properties of barium monoferrite and barium hexaferrite nanoparticlesSarwar Hasan0Bruska Azhdar1Azmar College for Gifted Students, Sulaimani Directorate of Education, Sulaimani, IraqNanotechnology Research Laboratory, Department of Physics, College of Science, University of Sulaimani, Sulaimani, Iraq; Corresponding author at: Nanotechnology Research Laboratory, Department of Physics, University of Sulaimani, 46001 Sulaimani, Iraq.Barium monoferrite and M−type hexaferrite with generic formulae BaFe2O4 and BaFe12O19 were synthesized using the sol–gel method by annealing at 1000 °C. To confirm the phase and compositions, XRD and FTIR analyses were employed, and the formation of orthorhombic crystal structure of BaFe2O4 and hexagonal crystal structure of BaFe12O19 were observed. The surface morphology of the samples was investigated through the use of the scanning electron micrograph (SEM) technique. Energy dispersive X-ray spectroscopy (EDS) confirmed the chemical compositions of the samples. At room temperature, the real part of the dielectric constant (ɛʹ), the imaginary part of the dielectric constant (ɛʹʹ), the dielectric loss tangent (tanδ), and AC conductivity (σAC) were measured at the specific frequencies (1, 1.5, and 2 MHz), and they were increased with both temperature and relative humidity (RH). Barium ferrite humidity sensors were created. The resistance of the sensor goes down as the RH% goes up, and the BaFe12O19 humidity sensor is 1.82 times more sensitive than the BaFe2O4 sensor.http://www.sciencedirect.com/science/article/pii/S2211379722005769Thermo-dielectric propertiesHumidito-dielectric propertiesHumidity sensorBaFe2O4BaFe12O19 |
| spellingShingle | Sarwar Hasan Bruska Azhdar Thermo-dielectric, humidito-dielectric, and humidity sensing properties of barium monoferrite and barium hexaferrite nanoparticles Results in Physics Thermo-dielectric properties Humidito-dielectric properties Humidity sensor BaFe2O4 BaFe12O19 |
| title | Thermo-dielectric, humidito-dielectric, and humidity sensing properties of barium monoferrite and barium hexaferrite nanoparticles |
| title_full | Thermo-dielectric, humidito-dielectric, and humidity sensing properties of barium monoferrite and barium hexaferrite nanoparticles |
| title_fullStr | Thermo-dielectric, humidito-dielectric, and humidity sensing properties of barium monoferrite and barium hexaferrite nanoparticles |
| title_full_unstemmed | Thermo-dielectric, humidito-dielectric, and humidity sensing properties of barium monoferrite and barium hexaferrite nanoparticles |
| title_short | Thermo-dielectric, humidito-dielectric, and humidity sensing properties of barium monoferrite and barium hexaferrite nanoparticles |
| title_sort | thermo dielectric humidito dielectric and humidity sensing properties of barium monoferrite and barium hexaferrite nanoparticles |
| topic | Thermo-dielectric properties Humidito-dielectric properties Humidity sensor BaFe2O4 BaFe12O19 |
| url | http://www.sciencedirect.com/science/article/pii/S2211379722005769 |
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