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Title: Effect of Au irradiation energy on ejection of ZnS nanoparticles from ZnS film

Abstract

ZnS films deposited on Si have been irradiated with Au ions at 35 keV, 2, and 100 MeV. Sputtered particles, collected on catcher foils during irradiation, were analyzed using transmission electron microscopy. For the case of 35 keV Au irradiation, no nanoparticle (NP) could be observed on the catcher foil. However, NPs 2-7 nm in size, have been observed on the catcher foils for MeV irradiations at room temperature. For particle sizes {>=}3 nm, the distributions could be fitted to power law decays with decay exponents varying between 2 and 3.5. At 2 MeV, after correction for cluster breakup effects, the decay exponent has been found to be close to 2, indicating shock waves induced ejection to be the dominant mechanism. The corrected decay exponent for the 100 MeV Au irradiation case has been found to be about 2.6. Coulomb explosion followed by thermal spike induced vaporization of ZnS seems to be the dominant mechanism regarding material removal at such high energy. In such a case the evaporated material can cool down going into the fragmentation region forming clusters.

Authors:
; ; ; ; ; ; ; ;  [1];  [2];  [2]
  1. Institute of Physics, Sachivalaya Marg, Bhubaneswar 751005 (India)
  2. (India)
Publication Date:
OSTI Identifier:
20884974
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 101; Journal Issue: 1; Other Information: DOI: 10.1063/1.2403240; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; DISSOCIATION; EVAPORATION; FOILS; FRAGMENTATION; GOLD IONS; ION BEAMS; IRRADIATION; KEV RANGE 10-100; MEV RANGE; NANOSTRUCTURES; PARTICLE SIZE; PARTICLES; SEMICONDUCTOR MATERIALS; SHOCK WAVES; TEMPERATURE RANGE 0273-0400 K; THERMAL SPIKES; THIN FILMS; TRANSMISSION ELECTRON MICROSCOPY; ZINC SULFIDES

Citation Formats

Kuiri, P. K., Ghatak, J., Joseph, B., Lenka, H. P., Sahu, G., Mahapatra, D. P., Tripathi, A., Kanjilal, D., Mishra, N. C., Inter University Accelerator Centre, Aruna Asaf Ali Marg, New Delhi 110067, and Department of Physics, Utkal University, Bhubaneswar 751004. Effect of Au irradiation energy on ejection of ZnS nanoparticles from ZnS film. United States: N. p., 2007. Web. doi:10.1063/1.2403240.
Kuiri, P. K., Ghatak, J., Joseph, B., Lenka, H. P., Sahu, G., Mahapatra, D. P., Tripathi, A., Kanjilal, D., Mishra, N. C., Inter University Accelerator Centre, Aruna Asaf Ali Marg, New Delhi 110067, & Department of Physics, Utkal University, Bhubaneswar 751004. Effect of Au irradiation energy on ejection of ZnS nanoparticles from ZnS film. United States. doi:10.1063/1.2403240.
Kuiri, P. K., Ghatak, J., Joseph, B., Lenka, H. P., Sahu, G., Mahapatra, D. P., Tripathi, A., Kanjilal, D., Mishra, N. C., Inter University Accelerator Centre, Aruna Asaf Ali Marg, New Delhi 110067, and Department of Physics, Utkal University, Bhubaneswar 751004. Mon . "Effect of Au irradiation energy on ejection of ZnS nanoparticles from ZnS film". United States. doi:10.1063/1.2403240.
@article{osti_20884974,
title = {Effect of Au irradiation energy on ejection of ZnS nanoparticles from ZnS film},
author = {Kuiri, P. K. and Ghatak, J. and Joseph, B. and Lenka, H. P. and Sahu, G. and Mahapatra, D. P. and Tripathi, A. and Kanjilal, D. and Mishra, N. C. and Inter University Accelerator Centre, Aruna Asaf Ali Marg, New Delhi 110067 and Department of Physics, Utkal University, Bhubaneswar 751004},
abstractNote = {ZnS films deposited on Si have been irradiated with Au ions at 35 keV, 2, and 100 MeV. Sputtered particles, collected on catcher foils during irradiation, were analyzed using transmission electron microscopy. For the case of 35 keV Au irradiation, no nanoparticle (NP) could be observed on the catcher foil. However, NPs 2-7 nm in size, have been observed on the catcher foils for MeV irradiations at room temperature. For particle sizes {>=}3 nm, the distributions could be fitted to power law decays with decay exponents varying between 2 and 3.5. At 2 MeV, after correction for cluster breakup effects, the decay exponent has been found to be close to 2, indicating shock waves induced ejection to be the dominant mechanism. The corrected decay exponent for the 100 MeV Au irradiation case has been found to be about 2.6. Coulomb explosion followed by thermal spike induced vaporization of ZnS seems to be the dominant mechanism regarding material removal at such high energy. In such a case the evaporated material can cool down going into the fragmentation region forming clusters.},
doi = {10.1063/1.2403240},
journal = {Journal of Applied Physics},
number = 1,
volume = 101,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2007},
month = {Mon Jan 01 00:00:00 EST 2007}
}
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