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In Situ STM Observation of the Spiral Growth in the Epitaxial Fe Films on MgO(001)

Published online by Cambridge University Press:  15 February 2011

Agus Subagyo ,
Kazuhisa Sueoka  and
Koichi Mukasa
Agus Subagyo
Affiliation:
Graduate School of Engineering, Hokkaido University, Kita-13, Nishi-8, Kita-ku, Sapporo 060-8628, Japan, agus@nano.eng.hokudai.ac.jp
Kazuhisa Sueoka
Affiliation:
Graduate School of Engineering, Hokkaido University, Kita-13, Nishi-8, Kita-ku, Sapporo 060-8628, Japan, agus@nano.eng.hokudai.ac.jp
Koichi Mukasa
Affiliation:
Graduate School of Engineering, Hokkaido University, Kita-13, Nishi-8, Kita-ku, Sapporo 060-8628, Japan, agus@nano.eng.hokudai.ac.jp CREST, Japan Science and Technology Corporation, Kita-13, Nishi-8, Kita-ku, Sapporo 060-8628, Japan
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Abstract

We reported a scanning tunneling microscopy(STM) observation on the growth mode transition from 2D-nucleation to spiral growth in the epitaxial Fe films on MgO(001). As the growth temperature is increased to above 493 K, a temperature region where the Schwoebel barrier is overcome, the Fe films grow in a 2D-nucleation and growth mode formed atomically flat films. The 2D-nucleation transformed into a spiral growth as increasing film thickness. At a growth temperature of 493 K, the transition of 2D nucleation to the spiral growth was observed at a film thickness of 75 Å. The critical thickness of the emergence of growth transition decreased as the growth temperature is increased.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 580: Symposium E – Nucleation & Growth Processes in Materials , 1999 , 429
Copyright
Copyright © Materials Research Society 2000

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