| Autor: |
Caroline A. Ross, Chong H. Ahn, Xue Yin Sun, Lior Kornblum, Michael J. Campion, Nicolas M. Aimon, Dong-Hun Kim, Harry L. Tuller, Fred Walker, Jae Jin Kim |
| Rok vydání: |
2015 |
| Předmět: |
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| Zdroj: |
Advanced Functional Materials. 25:3091-3100 |
| ISSN: |
1616-301X |
| DOI: |
10.1002/adfm.201500332 |
| Popis: |
A self-assembled three phase epitaxial nanocomposite film is grown consisting of ≈3 nm diameter fcc metallic Cu nanorods within square prismatic SrO rocksalt nanopillars in a Sr(Ti,Cu)O3-δ perovskite matrix. Each phase has an epitaxial relation to the others. The core–shell-matrix structures are grown on SrTiO3 substrates and can also be integrated onto Si using a thin SrTiO3 buffer. The structure is made by pulsed laser deposition in vacuum from a SrTi0.75Cu0.25O3 target, and formed as a result of the limited solubility of Cu in the perovskite matrix. Wet etching removes the 3 nm diameter Cu nanowires leaving porous SrO pillars. The three-phase nanocomposite film is used as a substrate for growing a second epitaxial nanocomposite consisting of CoFe2O4 spinel pillars in a BiFeO3 perovskite matrix, producing dramatic effects on the structure and magnetic properties of the CoFe2O4. This three-phase vertical nanocomposite provides a complement to the well-known two-phase nanocomposites, and may offer a combination of properties of three different materials as well as additional avenues for strain-mediated coupling within a single film. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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