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| Paper Type | : | Research Paper |
| Title | : | Impact on Structural and Magnetic properties of nano Lithium Cobalt Aluminates by the dopant Fe3+ synthesized by co-precipitation method, for opto-magnetic applications and for Magnetic refrigeration system |
| Country | : | India |
| Authors | : | Uthayakumar. B || Sukandhiya. S || S. Periandy |
 |
: | 10.9790/4861-0905010108  |
ABSTRACT: Pure and Fe doped nano Lithium-Cobalt Aluminate were synthesized by Co-Precipitation method for the present study. Fe dopant in nano Li1.0Co0.5FexAl2-xO are in the concentration x = 0, 0.5, 1.5 and 2.0. Precipitates are obtained at the pH of 10 and samples are sintered at 1173K before characterization. X-ray diffraction analysis is carried out with X-ray Diffractometer (XRD) to find structural parameters lattice constant, crystallite size, lattice strain, X-ray density and dislocation density. Crystallite size increase with increase in Fe3+ ion and it lies between 23nm and 57 nm. Lattice constant also increases with increase in dopant and it ranges between 8.1987Å and 8.558Å.Morphology............
Keywords: Opto-Magnetic, Li-Co-Fe Aluminates, EDS, FTIR, SEM, VSM, XRD
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| Paper Type | : | Research Paper |
| Title | : | Temporal Variation of Radiofrequency Electromagnetic Field Exposure from Mobile Phone Base Stations in Sensitive Environments |
| Country | : | East Africa |
| Authors | : | Gertrude Ayugi || Akisophel Kisolo || Tumps. W. Ireeta || Peter Opio |
|
: | 10.9790/4861-0905010915 |
ABSTRACT: Temporal variation in exposure to radiofrequency electromagnetic waves from mobile phone technology has been assessed in sensitive areas like residential areas, schools, commercial areas and hospitals. The mobile phone technologies considered in the study are GSM900, GSM1800, UMTS2100 and LTE2600. Exposure was determined using the Aaronia Spectran HF-6065 V4, OmniLOG 70600 antenna, HyperLOG 70600 antenna, Aaronia GPS Logger, Real Time MCS Spectrum-Analysis-Software and a laptop. The maximum exposures recorded were compared with the International Commission on Non-Ionizing Radiation Protection (ICNIRP) guidelines and they were found to be very low relative to the set guidelines. This showed that the public is safe from these radiations
Keywords: Radiofrequency, electromagnetic fields, electromagnetic hypersensitivity, temporal variation
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