Sindhu, H S and Rajendra, B V and Kulkarni, Suresh D and Babu, P D (2018) Optical, electrical and magnetic properties of ?ber structure Zn0.99Mn0.01O ?lms prepared by spray pyrolysis. Thin Solid Films, 655 (01). pp. 83-94. ISSN 0040-6090
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Abstract
Zn0.99Mn0.01O thin films were deposited on borosilicate glass at different temperatures and precursor concentration using cost-effective chemical spray pyrolysis. X-ray diffraction patterns revealed that all the deposits had a hexagonal wurtzite structure with (0 0 2) preferred orientation. The variation of deposition temperature and precursor concentration slightly modified the crystallite size and lattice parameters. The compositional analysis by Energy dispersive X-ray analysis indicated the presence of zinc and manganese. The films deposited at 723 K using 0.0125M precursor exhibited ~90% transmittance in the visible region. The optical energy bandgap reduced when both deposition temperature and solution molarity were increased probably due to sp-d exchange interactions. All deposited films showed two emission peaks that is near band edge and deep level emissions in ultraviolet and visible region respectively. All films showed n-type electrical conductivity. The observed changes were due to the variation in charge carrier density and mobility in the films. Low-temperature magnetic studies showed that the films were super-paramagnetic when deposited using low precursor concentration while they were weakly ferromagnetic when deposited using higher precursor concentration.
Item Type: | Article |
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Uncontrolled Keywords: | ZnMnO ?lms Spray pyrolysis Optical properties Electrical properties Magnetic properties |
Subjects: | Engineering > MIT Manipal > Physics |
Depositing User: | MIT Library |
Date Deposited: | 03 Jul 2018 09:53 |
Last Modified: | 03 Jul 2018 09:53 |
URI: | http://eprints.manipal.edu/id/eprint/151460 |
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