title: Substrate control of anisotropic resistivity in heteroepitaxial nanostructured arrays of cryptomelane manganese oxide on strontium titanate.
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. While the symmetries of the (001) and (111)STO substrate surfaces give deposits consisting of multiple nanofiber arrays with isotropic in-plane resistivities, only a single nanofiber array is formed on (110)STO giving highly anisotropic electrical properties with very low resistivity values measured parallel to the fibers and similar to the lowest value ever reported.
authors.affiliation: Institute of Materials Science, University of Connecticut, Storrs, CT, USA.
authors.forename: Anais E
authors.initials: AE
authors.lastname: Espinal
authors.forename: Yonggao
authors.initials: Y
authors.lastname: Yan
authors.forename: Lichun
authors.initials: L
authors.lastname: Zhang
authors.forename: Laura
authors.initials: L
authors.lastname: Espinal
authors.forename: Aimee
authors.initials: A
authors.lastname: Morey
authors.forename: Barrett O
authors.initials: BO
authors.lastname: Wells
authors.forename: Mark
authors.initials: M
authors.lastname: Aindow
authors.forename: Steven L
authors.initials: SL
authors.lastname: Suib
keywords: cryptomelane; heteroepitaxial growth; resistance; resistivity