| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances and Discoveries in Non-equilibrium Driven Nanomaterials and Thin Films
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| Presentation Title |
Novel Bent-lattice Nanostructures in Crystallizing Amorphous Films Discovered by Transmission Electron Microscopy |
| Author(s) |
Vladimir Yu. Kolosov |
| On-Site Speaker (Planned) |
Vladimir Yu. Kolosov |
| Abstract Scope |
Exotic thin crystals with unexpected transrotational nanostructure [1] are discovered by TEM bend-contour method for crystal growth in thin (10-100 nm) amorphous films. The unusual phenomenon can often be traced in situ in TEM by e-beam heating, annealing: regular internal (dislocation independent) bending of crystal lattice planes in a growing crystal. Such transrotation (translation of the unit cell is complicated by small rotation realized round an axis lying in the film plane) results in strong regular lattice orientation gradients (up to 300 degrees/µm) of different geometries: cylindrical, ellipsoidal, toroidal, saddle, etc. The transrotation phenomenon is the basis for novel lattice-rotation nanoengineering of functional, smart thin-film materials with the features suitable also for strain nanoengineering. Transrotational micro crystals can be grown in vital thin films, e.g. phase change materials (PCM) for memory, photonics enabling multifunctional properties. [1] V.Yu. Kolosov and A.R. Tholen, Acta Mater. 48 (2000) 1829 |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Electronic Materials, |