Abstract
The growth and structure of epitaxial MnO(100) and MnO(111) nanolayers on Pd(100) surfaces have been investigated. We found that despite the large lattice mismatch to the Pd(100) substrate MnO(100) layers can be kinetically stabilised at low temperatures (≤350°C) and at oxygen pressures between 2x10−7 mbar and 5x10−7 mbar. Annealing in ultra-high vacuum to 650°C or, alternatively, deposition of manganese metal in oxygen pressure < 1x10−7 mbar causes the transformation of the MnO(100) to a polar MnO(111) surface. It is suggested that the growth of MnO(111) layers is energetically preferred over MnO(100) due to the epitaxial stabilisation at the metal-oxide interface.
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Allegretti, F. et al. (2009). The (100)→(111) Transition in Epitaxial Manganese Oxide Nanolayers. In: Cat, D.T., Pucci, A., Wandelt, K. (eds) Physics and Engineering of New Materials. Springer Proceedings in Physics, vol 127. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-88201-5_18
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DOI: https://doi.org/10.1007/978-3-540-88201-5_18
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