Field emission properties and strong localization effect in conduction mechanism of nanostructured perovskite LaNiO{sub 3}

Journal Article · Mon Aug 22 00:00:00 EDT 2016 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4961312· OSTI ID:22590530

Tanty, Narendra; Patra, Ananya; Prasad, V. ^[1]

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1. Department of Physics, Indian Institute of Science, Bangalore 560012, Karnataka (India)

We report the potential field emission of highly conducting metallic perovskite lanthanum nickelate (LaNiO{sub 3}) from the nanostructured pyramidal and whisker shaped tips as electron emitters. Nano particles of lanthanum nickelate (LNO) were prepared by sol-gel route. Structural and morphological studies have been carried out. Field emission of LNO exhibited high emission current density, J = 3.37 mA/cm{sup 2} at a low threshold electric field, E{sub th} = 16.91 V/μm, obeying Fowler–Nordheim tunneling. The DC electrical resistivity exhibited upturn at 11.6 K indicating localization of electron at low temperature. Magnetoresistance measurement at different temperatures confirmed strong localization in nanostructured LNO obeying Anderson localization effect at low temperature.

• OSTI ID: 22590530
• Journal Information: Applied Physics Letters, Vol. 109, Issue 8; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ELECTRIC FIELDS
FIELD EMISSION
LANTHANUM
MAGNETORESISTANCE
NANOSTRUCTURES
NICKELATES
PEROVSKITE
SOL-GEL PROCESS
TEMPERATURE RANGE 0000-0013 K
TUNNEL EFFECT