Re-evaporation effect on the surface morphology of Gd                         x                         Y                         1-x                         Ca                         4                         O(BO                         3                         )                         3                          films grown by combinatorial laser molecular-beam epitaxy

T. W. Kim; N. Arai; H. Kubota; H. Koinuma; Y. Matsumoto; M. Yoshimura; H. Furuya; H. Nakao; Y. Mori; T. Sasaki

doi:10.1016/S0169-4332(02)00350-1

Re-evaporation effect on the surface morphology of Gd _x Y _1-x Ca ₄ O(BO ₃ ) ₃ films grown by combinatorial laser molecular-beam epitaxy

T. W. Kim, N. Arai, H. Kubota, H. Koinuma, Y. Matsumoto, M. Yoshimura, H. Furuya, H. Nakao, Y. Mori, T. Sasaki

Research output: Contribution to journal › Conference article › peer-review

Abstract

We have found unusual re-evaporation effect on the surface morphology of Gd _x Y _1-x Ca ₄ O(BO ₃ ) ₃ (Gd _x Y _1-x COB) films grown by combinatorial laser molecular-beam epitaxy. The surface morphologies of the Gd _x Y _1-x COB films grown on the atomically flat (0 1 0) GdCa ₄ O(BO ₃ ) ₃ (GdCOB) substrates were strongly dependent on the deposition conditions such as substrate temperature and laser repetition rate. Decreasing the substrate temperature and/or increasing the laser repetition rate improved the surface morphology of the film since at such deposition conditions, re-evaporation which may make film surface rough could be effectively restrained. Gd _x Y _1-x COB film grown at 500 °C and 4 Hz exhibited the ultra-smooth surface like that of the atomically smooth (0 1 0) GdCOB substrate. Under such conditions, intensity monitoring of reflection high-energy electron diffraction revealed the layer-by-layer growth of the film. Using this regulated growth behavior of the films we have successfully fabricated such nano-structured films as [GdCOB/YCa ₄ O(BO ₃ ) ₃ ] superlattices.

Original language	English
Pages (from-to)	406-410
Number of pages	5
Journal	Applied Surface Science
Volume	197-198
DOIs	https://doi.org/10.1016/S0169-4332(02)00350-1
Publication status	Published - 2002 Jan 1
Externally published	Yes
Event	Cola 2001 - Tsukuba, Japan Duration: 2001 Oct 1 → 2001 Oct 1

Keywords

Gd Y COB
Laser MBE
Re-evaporation
Surface

ASJC Scopus subject areas

Chemistry(all)
Condensed Matter Physics
Physics and Astronomy(all)
Surfaces and Interfaces
Surfaces, Coatings and Films

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10.1016/S0169-4332(02)00350-1

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Kim, T. W., Arai, N., Kubota, H., Koinuma, H., Matsumoto, Y., Yoshimura, M., Furuya, H., Nakao, H., Mori, Y., & Sasaki, T. (2002). Re-evaporation effect on the surface morphology of Gd _x Y _1-x Ca ₄ O(BO ₃ ) ₃ films grown by combinatorial laser molecular-beam epitaxy Applied Surface Science, 197-198, 406-410. https://doi.org/10.1016/S0169-4332(02)00350-1

Re-evaporation effect on the surface morphology of Gd _x Y _1-x Ca ₄ O(BO ₃ ) ₃ films grown by combinatorial laser molecular-beam epitaxy . / Kim, T. W.; Arai, N.; Kubota, H.; Koinuma, H.; Matsumoto, Y.; Yoshimura, M.; Furuya, H.; Nakao, H.; Mori, Y.; Sasaki, T.

In: Applied Surface Science, Vol. 197-198, 01.01.2002, p. 406-410.

Research output: Contribution to journal › Conference article › peer-review

Kim, TW, Arai, N, Kubota, H, Koinuma, H, Matsumoto, Y, Yoshimura, M, Furuya, H, Nakao, H, Mori, Y & Sasaki, T 2002, ' Re-evaporation effect on the surface morphology of Gd _x Y _1-x Ca ₄ O(BO ₃ ) ₃ films grown by combinatorial laser molecular-beam epitaxy ', Applied Surface Science, vol. 197-198, pp. 406-410. https://doi.org/10.1016/S0169-4332(02)00350-1

Kim TW, Arai N, Kubota H, Koinuma H, Matsumoto Y, Yoshimura M et al. Re-evaporation effect on the surface morphology of Gd _x Y _1-x Ca ₄ O(BO ₃ ) ₃ films grown by combinatorial laser molecular-beam epitaxy Applied Surface Science. 2002 Jan 1;197-198:406-410. https://doi.org/10.1016/S0169-4332(02)00350-1

Kim, T. W. ; Arai, N. ; Kubota, H. ; Koinuma, H. ; Matsumoto, Y. ; Yoshimura, M. ; Furuya, H. ; Nakao, H. ; Mori, Y. ; Sasaki, T. / Re-evaporation effect on the surface morphology of Gd _x Y _1-x Ca ₄ O(BO ₃ ) ₃ films grown by combinatorial laser molecular-beam epitaxy In: Applied Surface Science. 2002 ; Vol. 197-198. pp. 406-410.

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title = " Re-evaporation effect on the surface morphology of Gd x Y 1-x Ca 4 O(BO 3 ) 3 films grown by combinatorial laser molecular-beam epitaxy ",

abstract = " We have found unusual re-evaporation effect on the surface morphology of Gd x Y 1-x Ca 4 O(BO 3 ) 3 (Gd x Y 1-x COB) films grown by combinatorial laser molecular-beam epitaxy. The surface morphologies of the Gd x Y 1-x COB films grown on the atomically flat (0 1 0) GdCa 4 O(BO 3 ) 3 (GdCOB) substrates were strongly dependent on the deposition conditions such as substrate temperature and laser repetition rate. Decreasing the substrate temperature and/or increasing the laser repetition rate improved the surface morphology of the film since at such deposition conditions, re-evaporation which may make film surface rough could be effectively restrained. Gd x Y 1-x COB film grown at 500 °C and 4 Hz exhibited the ultra-smooth surface like that of the atomically smooth (0 1 0) GdCOB substrate. Under such conditions, intensity monitoring of reflection high-energy electron diffraction revealed the layer-by-layer growth of the film. Using this regulated growth behavior of the films we have successfully fabricated such nano-structured films as [GdCOB/YCa 4 O(BO 3 ) 3 ] superlattices.",

keywords = "Gd Y COB, Laser MBE, Re-evaporation, Surface",

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T1 - Re-evaporation effect on the surface morphology of Gd x Y 1-x Ca 4 O(BO 3 ) 3 films grown by combinatorial laser molecular-beam epitaxy

AU - Kim, T. W.

AU - Arai, N.

AU - Kubota, H.

AU - Koinuma, H.

AU - Matsumoto, Y.

AU - Yoshimura, M.

AU - Furuya, H.

AU - Nakao, H.

AU - Mori, Y.

AU - Sasaki, T.

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N2 - We have found unusual re-evaporation effect on the surface morphology of Gd x Y 1-x Ca 4 O(BO 3 ) 3 (Gd x Y 1-x COB) films grown by combinatorial laser molecular-beam epitaxy. The surface morphologies of the Gd x Y 1-x COB films grown on the atomically flat (0 1 0) GdCa 4 O(BO 3 ) 3 (GdCOB) substrates were strongly dependent on the deposition conditions such as substrate temperature and laser repetition rate. Decreasing the substrate temperature and/or increasing the laser repetition rate improved the surface morphology of the film since at such deposition conditions, re-evaporation which may make film surface rough could be effectively restrained. Gd x Y 1-x COB film grown at 500 °C and 4 Hz exhibited the ultra-smooth surface like that of the atomically smooth (0 1 0) GdCOB substrate. Under such conditions, intensity monitoring of reflection high-energy electron diffraction revealed the layer-by-layer growth of the film. Using this regulated growth behavior of the films we have successfully fabricated such nano-structured films as [GdCOB/YCa 4 O(BO 3 ) 3 ] superlattices.

AB - We have found unusual re-evaporation effect on the surface morphology of Gd x Y 1-x Ca 4 O(BO 3 ) 3 (Gd x Y 1-x COB) films grown by combinatorial laser molecular-beam epitaxy. The surface morphologies of the Gd x Y 1-x COB films grown on the atomically flat (0 1 0) GdCa 4 O(BO 3 ) 3 (GdCOB) substrates were strongly dependent on the deposition conditions such as substrate temperature and laser repetition rate. Decreasing the substrate temperature and/or increasing the laser repetition rate improved the surface morphology of the film since at such deposition conditions, re-evaporation which may make film surface rough could be effectively restrained. Gd x Y 1-x COB film grown at 500 °C and 4 Hz exhibited the ultra-smooth surface like that of the atomically smooth (0 1 0) GdCOB substrate. Under such conditions, intensity monitoring of reflection high-energy electron diffraction revealed the layer-by-layer growth of the film. Using this regulated growth behavior of the films we have successfully fabricated such nano-structured films as [GdCOB/YCa 4 O(BO 3 ) 3 ] superlattices.

KW - Gd Y COB

KW - Laser MBE

KW - Re-evaporation

KW - Surface

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