Field emission properties of nano-structured cobalt ferrite (CoFe2O4) synthesized by low-temperature chemical method

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Title:	Field emission properties of nano-structured cobalt ferrite (CoFe2O4) synthesized by low-temperature chemical method
Authors:	Ansari, S. M. Suryawanshi, Sachin R More, M. A. Sen, Debasis Kolekar, Y. D. Ramana, C. V. Dept. of Physics
Keywords:	Physics Cobalt ferrite Chemical synthesis TOC-JUNE-2018 2018
Issue Date:	Jun-2018
Publisher:	Elsevier B.V.
Citation:	Chemical Physics Letters, 701.
Abstract:	We report on the field-emission properties of structure-morphology controlled nano-CoFe2O4 (CFO) synthesized via a simple and low-temperature chemical method. Structural analyses indicate that the spongy-CFO (approximately, 2.96 nm) is nano-structured, spherical, uniformly-distributed, cubic-structured and porous. Field emission studies reveal that CFO exhibit low turn-on field (4.27 V/mu m) and high emission current-density (775 mu A/cm(2)) at a lower applied electric field of 6.80 V/mu m. In addition, extremely good emission current stability is obtained at a pre-set value of 1 mu A and high emission spot-density over large area (2 x 2 cm(2)) suggesting the applicability of these materials for practical applications in vacuum micro-/nano-electronics.
URI:	http://dr.iiserpune.ac.in:8080/xmlui/handle/123456789/1052 https://doi.org/10.1016/j.cplett.2018.04.027
ISSN:	0009-2614
Appears in Collections:	JOURNAL ARTICLES

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