Photostability and electrical and magnetic properties of cobalt oxide nanoparticles through biological mechanism of endophytic fungus Aspergillus nidulans

The study elaborates magnetic and electrical properties of greenly synthesized cobalt oxide (Co 3 O 4 ) nanoparticles through endophytic fungus Aspergillus nidulans isolated from medicinal plant Nothapodytes foetida , which examines the ability of the nanoparticles to be magnetized and electrified,...

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Bibliographic Details
Published in:Applied physics. A, Materials science & processing Materials science & processing, 2020-03, Vol.126 (3), Article 234
Main Authors: Vijayanandan, Ajuy Sundar, Balakrishnan, Raj Mohan
Format: Article
Language:English
Subjects:
Applied physics
Biosynthesis
Characterization and Evaluation of Materials
Cobalt
Cobalt oxides
Condensed Matter Physics
Dissipation factor
Electrical properties
Ferromagnetism
Fungi
Herbal medicine
Liquid chromatography
Machines
Magnetic properties
Magnetic saturation
Manufacturing
Mass spectrometry
Materials science
Nanoparticles
Nanotechnology
Optical and Electronic Materials
Physics
Physics and Astronomy
Processes
Surfaces and Interfaces
Thin Films
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Summary:The study elaborates magnetic and electrical properties of greenly synthesized cobalt oxide (Co 3 O 4 ) nanoparticles through endophytic fungus Aspergillus nidulans isolated from medicinal plant Nothapodytes foetida , which examines the ability of the nanoparticles to be magnetized and electrified, being one of the yardsticks for energy application. On increasing the precursor concentration from 2 to 10 mM, there is a shift in paramagnetic to weak ferromagnetic behavior of nanoparticles with the increase in saturation magnetization ( M s ) from 0.161 to 7.75 emu/g. Frequency dependence of dielectric constant is found to increase with an increase in frequency, and the aforementioned nanoparticles can be used as a dielectric up to 1,50,000 Hz as dissipation factor is lesser than one. Besides, photostability study has indicated that the particles are stable for at least 45 days. Through liquid chromatography–mass spectrometry (LC–MS) analysis, phytochelatins are identified to be involved in the biosynthesis of nanoparticles.
ISSN:0947-8396
1432-0630
DOI:10.1007/s00339-020-3395-x