Faculty Publications

Emergence Of Long Range One-Dimensional Nanostructures In A Disordered Two-Dimensional System: Mn-Doped Ti 1+Δs 2

Document Type

Article

Journal/Book/Conference Title

Journal of Physical Chemistry C

Volume

116

Issue

1

First Page

764

Last Page

769

Abstract

Multiple microscopic techniques have been employed to study Mn-intercalated Ti 1+δS 2 at different length scales. The introduction of Mn intercalates resulted in the formation of two distinct types of one-dimensional structures; both exhibited extremely high aspect ratios, with lengths exceeding hundreds of micrometers. The smaller of the two features were only a few nanometers wide, while the larger one-dimensional structures had widths on the order of magnitude of one hundred nanometers. The one-dimensional structures were detected on samples with a range of Mn-doping levels but were especially common in samples with a 15% Mn-doping concentration. In these samples, a high density of parallel linear structures could be found at lengths ranging from the nanometer to micrometer scale. One-dimensional structures were never found in Ti 1+δS 2 samples without Mn dopants. We utilized Monte Carlo simulations to better understand these structures, which arise from interactions between the two species of intercalates in the system: Mn ions and excess Ti ions bound to intercalation sites. While the arrangement of intercalated ions has no long-range order, interactions between various nanoscale domains leads to the formation of domain-wall-like structures extending over macroscopic distances. © 2011 American Chemical Society.

Department

Department of Physics

Original Publication Date

1-12-2012

DOI of published version

10.1021/jp208422n

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