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Plasma plume behavior of laser ablated cerium oxide: Effect of oxygen partial pressure

Published online by Cambridge University Press:  06 June 2014

Arun Kumar Panda ,
Akash Singh ,
Maneesha Mishra ,
R. Thirumurugesan ,
P. Kuppusami  and
E. Mohandas
Arun Kumar Panda*
Affiliation:
Materials Synthesis and Structural Characterisation Division, Physical Metallurgy Group, Indira Gandhi Centre for Atomic Research, Kalpakkam, India
Akash Singh
Affiliation:
Materials Synthesis and Structural Characterisation Division, Physical Metallurgy Group, Indira Gandhi Centre for Atomic Research, Kalpakkam, India
Maneesha Mishra
Affiliation:
Materials Synthesis and Structural Characterisation Division, Physical Metallurgy Group, Indira Gandhi Centre for Atomic Research, Kalpakkam, India
R. Thirumurugesan
Affiliation:
Materials Synthesis and Structural Characterisation Division, Physical Metallurgy Group, Indira Gandhi Centre for Atomic Research, Kalpakkam, India
P. Kuppusami
Affiliation:
Centre for Nanoscience and Nanotechnology, Sathyabama University, Chennai, India
E. Mohandas
Affiliation:
Materials Synthesis and Structural Characterisation Division, Physical Metallurgy Group, Indira Gandhi Centre for Atomic Research, Kalpakkam, India
*
Address correspondence and reprint requests to: Arun Kumar Panda, Materials Synthesis and Structural Characterisation Division, Physical Metallurgy Group, Indira Gandhi Centre for Atomic Research, Kalpakkam-603 102, India. E-mail: akpanda@igcar.gov.in
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Abstract

This paper describes the spatial and temporal investigation of laser ablated plasma plume of cerium oxide target using Langmuir probe. Cerium oxide target was ablated using a KrF (λ ~ 248 nm) gas laser. Experimental studies confirmed that oxygen partial pressure of 2 × 10−2 mbar is sufficient enough to get good quality films of cerium oxide. At this pressure, plume was diagnosed for their spatial and temporal behavior. Spatial distribution was investigated at a distance of 15 mm, 30 mm, and up to a maximum distance of 45 mm from the target, whereas temporal behavior has been recorded in the range of 0 to 50 µS with an interval of 0.5 µS. The average electron densities are found to be maximum at 30 mm from the target position and the plasma current of the laser ablated ceria is found to be maximum at 22 µS.

Keywords

Cerium oxideLangmuir probePlasmaPulsed laser deposition
Type
Research Article
Information
Laser and Particle Beams , Volume 32 , Issue 3 , September 2014 , pp. 429 - 435
Copyright
Copyright © Cambridge University Press 2014 

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