Abstract
Thin film epitaxy is essential for state-of-the-art semiconductor applications. The combination of different substrates and deposition methods leads to various crystallographic orientation relationships between thin films and substrates, which have a decisive impact on thin film performance. By utilizing pulsed laser deposition, we discovered a very high-index (7 1 ¯ 4) –oriented NiO thin film when deposited on r-plane (10 1 ¯ 2) sapphire substrates. The in-plane epitaxial relations are [13 1 ¯] NiO||[1 2 ¯ 10] Sapphire and [1 ¯ 12] NiO||[10 11 ¯] Sapphire , and the lattice mismatch is 3.2% and 0.4% along two directions, respectively. Exchange bias studies by the deposition of Co on NiO (111) and NiO (7 1 ¯ 4) show different behaviors, which may be associated with the spin density and alignment on the surface. Graphical abstract: [Figure not available: see fulltext.].
| Original language | English |
|---|---|
| Pages (from-to) | 1623-1630 |
| Number of pages | 8 |
| Journal | Emergent Materials |
| Volume | 6 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - Oct 2023 |
| Externally published | Yes |
Bibliographical note
Copyright the Author(s) 2023. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.Keywords
- Epitaxy
- Exchange bias
- High index
- NiO
- R-plane sapphire
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