Structure of periodic crystals and quasicrystals in ultrathin films of Ba-Ti-O
Abstract
Here, we model the remarkable thin-film Ba-Ti-O structures formed by heat treatment of an initial perovskite BaTiO3 thin film on a Pt(111) surface. All structures contain a rumpled Ti-O network with all Ti threefold coordinated with O, and with Ba occupying the larger. mainly Ti7O7, pores. The quasicrystal structue is a simple decoration of three types of tiles: square, triangle and 30° rhombus, with edge lengths 6.85 Å, joined edge-to-edge in a quasicrystalline pattern; observed periodic crystals in ultrathin film Ba-Ti-O are built from these and other tiles. Simulated STM images reproduce the patterns seen experimentally, and identify the bright protrusions as Ba atoms. The models are consistent with all experimental observations.
- Authors:
-
- National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States). Material Measurement Lab.
- Slovak Academy of Sciences, Bratislava (Slovakia). Inst. of Physics
- Cornell Univ., Ithaca, NY (United States). Dept. of Physics
- Publication Date:
- Research Org.:
- Cornell Univ., Ithaca, NY (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1343613
- Alternate Identifier(s):
- OSTI ID: 1234157
- Grant/Contract Number:
- FG02-89ER45405
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review B
- Additional Journal Information:
- Journal Volume: 93; Journal Issue: 2; Journal ID: ISSN 2469-9950
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
Citation Formats
Cockayne, Eric, Mihalkovič, Marek, and Henley, Christopher L. Structure of periodic crystals and quasicrystals in ultrathin films of Ba-Ti-O. United States: N. p., 2016.
Web. doi:10.1103/PhysRevB.93.020101.
Cockayne, Eric, Mihalkovič, Marek, & Henley, Christopher L. Structure of periodic crystals and quasicrystals in ultrathin films of Ba-Ti-O. United States. https://doi.org/10.1103/PhysRevB.93.020101
Cockayne, Eric, Mihalkovič, Marek, and Henley, Christopher L. Thu .
"Structure of periodic crystals and quasicrystals in ultrathin films of Ba-Ti-O". United States. https://doi.org/10.1103/PhysRevB.93.020101. https://www.osti.gov/servlets/purl/1343613.
@article{osti_1343613,
title = {Structure of periodic crystals and quasicrystals in ultrathin films of Ba-Ti-O},
author = {Cockayne, Eric and Mihalkovič, Marek and Henley, Christopher L.},
abstractNote = {Here, we model the remarkable thin-film Ba-Ti-O structures formed by heat treatment of an initial perovskite BaTiO3 thin film on a Pt(111) surface. All structures contain a rumpled Ti-O network with all Ti threefold coordinated with O, and with Ba occupying the larger. mainly Ti7O7, pores. The quasicrystal structue is a simple decoration of three types of tiles: square, triangle and 30° rhombus, with edge lengths 6.85 Å, joined edge-to-edge in a quasicrystalline pattern; observed periodic crystals in ultrathin film Ba-Ti-O are built from these and other tiles. Simulated STM images reproduce the patterns seen experimentally, and identify the bright protrusions as Ba atoms. The models are consistent with all experimental observations.},
doi = {10.1103/PhysRevB.93.020101},
journal = {Physical Review B},
number = 2,
volume = 93,
place = {United States},
year = {Thu Jan 07 00:00:00 EST 2016},
month = {Thu Jan 07 00:00:00 EST 2016}
}
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Works referencing / citing this record:
Quasicrystals and their Approximants in 2D Ternary Oxides
journal, December 2019
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- physica status solidi (b), Vol. 257, Issue 7
Quasicrystals and their Approximants in 2D Ternary Oxides
text, January 2020
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