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Title: Growth Mode Transition in Complex Oxide Heteroepitaxy: Atomically Resolved Studies

Journal Article · · Crystal Growth and Design

Here we performed investigations of the atomic-scale surface structure of epitaxial La5/8Ca3/8MnO3 thin films as a model system dependent on growth conditions in pulsed laser deposition with emphasis on film growth kinetics. Postdeposition in situ scanning tunneling microscopy was combined with in operando reflective high-energy electron diffraction to monitor the film growth and ex situ X-ray diffraction for structural analysis. We find a correlation between the out-of-plane lattice parameter and both adspecies mobility and height of the Ehrlich–Schwoebel barrier, with mobility of adatoms greater over the cationically stoichiometric terminations. We find that the data suggest that the out-of-plane lattice parameter is dependent on the mechanism of epitaxial strain relaxation, which is controlled by the oxidative power of the deposition environment.

Research Organization:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1263837
Journal Information:
Crystal Growth and Design, Vol. 16, Issue 5; ISSN 1528-7483
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 12 works
Citation information provided by
Web of Science

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Cited By (4)

Manipulation of ion energies in pulsed laser deposition to improve film growth journal April 2019
Epitaxial stabilization of pulsed laser deposited Sr n +1 Ir n O 3 n +1 thin films: Entangled effect of growth dynamics and strain journal September 2018
Reproducibility and off-stoichiometry issues in nickelate thin films grown by pulsed laser deposition journal January 2017
Reproducibility and off-stoichiometry issues in nickelate thin films grown by pulsed laser deposition text January 2017