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Volumn 273, Issue 5277, 1996, Pages 898-903

Synthesis of novel thin-film materials by pulsed laser deposition

Author keywords

[No Author keywords available]

Indexed keywords

COMPOSITE MATERIALS; DEPOSITION; FILM GROWTH; LASER ABLATION; LASER BEAMS; MULTILAYERS; NANOSTRUCTURED MATERIALS; OXIDES; PULSED LASER APPLICATIONS; SEMICONDUCTOR DOPING; SYNTHESIS (CHEMICAL); THICKNESS CONTROL;

EID: 9444245366     PISSN: 00368075     EISSN: None     Source Type: Journal    
DOI: 10.1126/science.273.5277.898     Document Type: Article
Times cited : (573)

References (59)
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    • in press
    • An intensified charge-coupled device (CCD)-array camera system coupled to a tunable (400 to 720 nm) narrow-band (full width at half maximum, 5 nm) liquid-crystal filter was used for species-resolved spectroscopic imaging. The ability to study simultaneously both fast- and slow-moving components of the ablation plume results from the extreme (photon counting) sensitivity of the intensified CGD-array camera system and its ability to collect photons from all wavelengths simultaneously. Slow-moving or scattered components of the laser-sputtered flux (such as redeposited material near the target) are not overlooked. For details and other examples of gated, species-resolved imaging, see (4) and D. B. Geohegan and A. A. Puretzky, Mater. Res. Soc. Symp. Proc., in press.
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    • Time-resolved ion current measurements during the ablation of various materials have revealed that over a limited range of ambient gas pressures, the ablation plume generally splits into two or more components that travel at different average velocities and KEs. For a detailed description of ion current measurements and the "plume splitting" phenomenon, see (4) and also D. B. Geohegan and A. A. Puretzky, Appl. Phys. Lett. 67, 197 (1995); Appl. Surf. Sci. 96-98, 131 (1996).
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    • Time-resolved ion current measurements during the ablation of various materials have revealed that over a limited range of ambient gas pressures, the ablation plume generally splits into two or more components that travel at different average velocities and KEs. For a detailed description of ion current measurements and the "plume splitting" phenomenon, see (4) and also D. B. Geohegan and A. A. Puretzky, Appl. Phys. Lett. 67, 197 (1995); Appl. Surf. Sci. 96-98, 131 (1996).
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    • Similar pulsed laser ablation supersonic expansion sources were first developed by Smalley and coworkers nearly 15 years ago [D. E. Powers et al., J. Phys. Chem. 86, 2556 (1982)].
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    • note
    • This research was carried out at Oak Ridge National Laboratory (ORNL), managed by Lockheed Martin Energy Research Corporation for the U.S. Department of Energy under contract DE-AC05-96OR22464. C.M.R. was supported by an appointment to the ORNL Postdoctoral Research Associates Program administered jointly by ORNL and the Oak Ridge Institute for Science and Education.


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