Scanning tunneling microscopy and molecular dynamics study of the Li 2TiO3(001) surface

Kisaburo Azuma; Coinneach Dover; David C. Grinter; Ricardo Grau-Crespo; Neyvis Almora-Barrios; Geoff Thornton; Takuji Oda; Satoru Tanaka

doi:10.1021/jp3119549

Scanning tunneling microscopy and molecular dynamics study of the Li ₂TiO₃(001) surface

Kisaburo Azuma
, Coinneach Dover
, David C. Grinter
, Ricardo Grau-Crespo
, Neyvis Almora-Barrios
, Geoff Thornton
, Takuji Oda
, Satoru Tanaka

Research output: Contribution to journal › Article › peer-review

24 Scopus citations

Abstract

We have investigated the (001) surface structure of lithium titanate (Li₂TiO₃) using auger electron spectroscopy (AES), low-energy electron diffraction (LEED), and scanning tunneling microscopy (STM). Li₂TiO₃ is a potential fusion reactor blanket material. After annealing at 1200 K, LEED demonstrated that the Li₂TiO ₃(001) surface was well ordered and not reconstructed. STM imaging showed that terraces are separated in height by about 0.3 nm suggesting a single termination layer. Moreover, hexagonal patterns with a periodicity of ∼0.4 nm are observed. On the basis of molecular dynamics (MD) simulations, these are interpreted as a dynamic arrangement of Li atoms.

Original language	English (US)
Pages (from-to)	5126-5131
Number of pages	6
Journal	Journal of Physical Chemistry C
Volume	117
Issue number	10
DOIs	https://doi.org/10.1021/jp3119549
State	Published - Mar 14 2013
Externally published	Yes

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SDG 7 Affordable and Clean Energy

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10.1021/jp3119549

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title = "Scanning tunneling microscopy and molecular dynamics study of the Li 2TiO3(001) surface",

abstract = "We have investigated the (001) surface structure of lithium titanate (Li2TiO3) using auger electron spectroscopy (AES), low-energy electron diffraction (LEED), and scanning tunneling microscopy (STM). Li2TiO3 is a potential fusion reactor blanket material. After annealing at 1200 K, LEED demonstrated that the Li2TiO 3(001) surface was well ordered and not reconstructed. STM imaging showed that terraces are separated in height by about 0.3 nm suggesting a single termination layer. Moreover, hexagonal patterns with a periodicity of ∼0.4 nm are observed. On the basis of molecular dynamics (MD) simulations, these are interpreted as a dynamic arrangement of Li atoms.",

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AU - Azuma, Kisaburo

AU - Dover, Coinneach

AU - Grinter, David C.

AU - Grau-Crespo, Ricardo

AU - Almora-Barrios, Neyvis

AU - Thornton, Geoff

AU - Oda, Takuji

AU - Tanaka, Satoru

PY - 2013/3/14

Y1 - 2013/3/14

N2 - We have investigated the (001) surface structure of lithium titanate (Li2TiO3) using auger electron spectroscopy (AES), low-energy electron diffraction (LEED), and scanning tunneling microscopy (STM). Li2TiO3 is a potential fusion reactor blanket material. After annealing at 1200 K, LEED demonstrated that the Li2TiO 3(001) surface was well ordered and not reconstructed. STM imaging showed that terraces are separated in height by about 0.3 nm suggesting a single termination layer. Moreover, hexagonal patterns with a periodicity of ∼0.4 nm are observed. On the basis of molecular dynamics (MD) simulations, these are interpreted as a dynamic arrangement of Li atoms.

AB - We have investigated the (001) surface structure of lithium titanate (Li2TiO3) using auger electron spectroscopy (AES), low-energy electron diffraction (LEED), and scanning tunneling microscopy (STM). Li2TiO3 is a potential fusion reactor blanket material. After annealing at 1200 K, LEED demonstrated that the Li2TiO 3(001) surface was well ordered and not reconstructed. STM imaging showed that terraces are separated in height by about 0.3 nm suggesting a single termination layer. Moreover, hexagonal patterns with a periodicity of ∼0.4 nm are observed. On the basis of molecular dynamics (MD) simulations, these are interpreted as a dynamic arrangement of Li atoms.

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