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![]() SURYAWANSHI, S.R., KANHE, N., MATHE, V.L., SINHA, Sucharita, MORE, M.A.. Arc plasma synthesized of GdB6 nanoparticles and its superior field emission behaviour of on W microtip. In: Materials Science and Condensed Matter Physics, Ed. 8-th Edition, 12-16 septembrie 2016, Chişinău. Chişinău: Institutul de Fizică Aplicată, 2016, Editia 8, p. 225. ISBN 978-9975-9787-1-2. |
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Materials Science and Condensed Matter Physics Editia 8, 2016 |
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Conferința "International Conference on Materials Science and Condensed Matter Physics" 8-th Edition, Chişinău, Moldova, 12-16 septembrie 2016 | ||||||
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Pag. 225-225 | ||||||
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Herein, we report the arc plasma synthesis of the Gadolinium hexaboride (GdB6) nanoparticles and its field emission (FE) investigations on tungsten point substrates (GdB6/W). The GdB6 nanoparticles on W point substrate exhibit irregular shaped grainy, dense, course morphology uniformly covering the entire tip substrate surface. Furthermore, the values of the turn-on and threshold field, defined as field required to draw an emission current density ~1mA/cm2 and ~10 mA/cm2, respectively are found to be ~ 2.2 and ~2.7 V/µm, for anode-cathode separation of ~1mm. Interestingly, a very high emission current density of ~3.5 A/cm2 has been drawn from the GdB6 nanoparticle emitter at relatively lower applied electric field of ~6.4 V/µm. The field enhancement factor, (β), is estimated to be ~10,250. The GdB6/W point electron source exhibits a good emission current stability at ~10 mA more than a period of 6 hr. The current stability is enumerated in terms of standard deviation and its magnitude has been measured to be only 1.72 % with respect to the average value. |
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