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Pulsed Laser Deposition of Barium Zirconate Thin Films for Neutral Imaging Applications

Published online by Cambridge University Press:  10 February 2011

R. Leuchtner ,
R. Yanochko ,
J. Krzanowski ,
W. Brock  and
J. Quinn
R. Leuchtner
Affiliation:
University of New Hampshire, Department of Physics, Durham, NH 03833
R. Yanochko
Affiliation:
University of New Hampshire, Department of Physics, Durham, NH 03833
J. Krzanowski
Affiliation:
University of New Hampshire, Department of Mech. Engineering, Durham, NH 03833
W. Brock
Affiliation:
University of New Hampshire, Department of Physics, Durham, NH 03833
J. Quinn
Affiliation:
University of New Hampshire, Department of Physics, Durham, NH 03833
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Abstract

Low work function surfaces offer great promise as thermionic converters and neutral conversion surfaces due to the relative ease with which electrons may be removed. BaZrO3 surfaces were prepared using pulsed laser deposition (PLD) and their materials properties evaluated for potential use as a neutral conversion surface for space applications. Single layer films were fabricated at temperatures ranging from 110°C to 600°C, and as a function of background ambient pressure. The degree of crystallinity of the resulting films was measured using x-ray diffraction (XRD) and the surface morphology evaluated with atomic force microscopy (AFM). The film quality was found to be directly related to substrate temperature: an increase in grain size from ˜ 10 nm to >50 nm and improved crystal orientation with respect to the substrate were observed as the deposition temperature was increased from 110°C to 600°C.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 441: Thin Films – Structure and Morphology , 1996 , 555
Copyright
Copyright © Materials Research Society 1997

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