NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.
Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.
An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Substrate Control of Anisotropic Resistivity in Heteroepitaxial Nanostructured Arrays of Cryptomelane Manganese Oxide on Strontium Titanate
Published
Author(s)
Anais E. Espinal, Yonggao Y. Yan, Lichun Zhang, Laura Espinal, Aimee Morey, Barrett O. Wells, Mark Aindow, Steven L. Suib
Abstract
Resistivity and resistance measurements have been carried out for thin films of cryptomelane-type manganese oxide (OMS-2) grown onto (001), (110) and (111)STO single crystals substrates via pulsed laser deposition. Combined with controlled synthesis and structure characterization, the influence of the orientation of the nanofibers on the electrical conduction has been identified. The symmetries of the (001) and (111)STO substrate surfaces gave deposits consisting of multiple nanofiber arrays with isotropic in-plane resistivities . In contrast, only a single nanofiber array was formed on (110) STO giving highly anisotropic electrical properties with very low resistivity values measured parallel to the fibers. The results herein show that the OMS-2 deposit structure can be controlled via heteroepitaxial growth on STO; this effect could be exploited in areas such as sensing, selective catalysis, and nano-composites.
Espinal, A.
, Yan, Y.
, Zhang, L.
, Espinal, L.
, Morey, A.
, Wells, B.
, Aindow, M.
and Suib, S.
(2014),
Substrate Control of Anisotropic Resistivity in Heteroepitaxial Nanostructured Arrays of Cryptomelane Manganese Oxide on Strontium Titanate, Small, [online], https://doi.org/10.1002/smll.20
(Accessed October 9, 2025)