Abstract
The heteroepitaxial growth dynamics of STO thin films on (100) LaAlO3 substrate by pulsed laser deposition has been studied. The laser energy density was found to be an important factor to determine the growth mechanics. High laser energy density is benefit to two dimensional layer-by-layer growth. Island growth prevails at low substrate temperature. STO thin films deposited at low oxygen partial pressure showed pellicular square grains. High oxygen partial pressure resulted in spherical STO grains. Step-terrace on substrate surface acts as a preferential nucleation site for adatoms, which leads to step-flow growth. STO thin films with atomic flat surface has been prepared on step-terraced substrate.
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H. T. LUE, C. Y. LIU and T. Y. TSENG, IEEE Electron. Device Lett. 23 (2002) 553.
R. DROOPAD, Z. YU, H. LI, Y. LIANG, C. OVERGAARD, A. DEMKOV, X. ZHANG, K. MOORE, K. EISENBEISER, M. HU, J. CURLESS and J. FINDER, J. Cryst. Growth 251 (2003) 638.
N. KONOFAOS, E. K. EVANGELOU, Z. C. WANG, V. KUGLER and U. HELMERSSON, J. Non-Cryst. Solids 303 (2002) 185.
N. SUGII, H. YAMADA, O. KAGAYA, M. YAMASAKI, K. SEKINE and K. YAMASHITA, Appl. Phys. Lett. 72 (1998) 261.
A. CHEN, B. C. LIN, W. J. CHEN, Y. B. LIN and C. TSAI, IEE Electron. Dev. Lett. 19 (1998) 426.
Y. P. ZHAO, G. C. WANG and T. M. LU, Phys. Rev. B 60 (1999) 9157.
J. RAMDANI, R. DROOPAD, Z. YU, J. A. CURLESS, C. D. OVERGAARD, J. FINDER, K. EISENBEISER, J. A. HALLMARK, W. J. OOMS, V. KAUSHIK, P. ALLURI and S. PIETAMBARAM, Appl. Surface Science 159 (2000) 127.
T. K. LI, P. ZAWADZKI, R. A. STALL, Y. ZHU and S. B. DESU, in “Structure and Evolution of Surfaces,” edited by R. C. Cammarata, E. H. Chason, T. L. Einstein and E. D. Williams, MRS Symposium Proceedings No. 440 (Materials Research Society, Pittsburg, 1997) p. 315.
N. KOHARA, A. YOSHIDA, T. SAWADA and M. KITAGAWA, Jpn. J. Appl. Phys. 39 (2000) 172.
J. H. JOO, J. B. PARK, Y. S. KIM, K. S. LEE, J. K. LEE, J. S. ROH and J. J. KIM, Jpn. J. Appl. Phys. Lett. 38 (1999) L195.
S. M. HE, D. H. LI, X. W. DENG, X. Z. LIU, Y. ZHANG and Y. R. LI, Microelectr. Engng. 66 (2003) 891.
J. H. SONG and Y. H. JEONG, Solid State Commun. 125 (2003) 563.
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Liu, X.Z., He, S.M., Li, D.H. et al. Dynamics of STO heteroepitaxial growth by pulsed laser deposition. J Mater Sci 40, 5139–5145 (2005). https://doi.org/10.1007/s10853-005-4403-4
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DOI: https://doi.org/10.1007/s10853-005-4403-4