| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances and Discoveries in Non-equilibrium Driven Nanomaterials and Thin Films
|
| Presentation Title |
Manipulation of Metal Insulator and topotactic Transition by interface modification in PLD grown epitaxial strongly correlated oxides VO2/TiO2 and their applications in nanomechanical resonator |
| Author(s) |
Ankur Goswami, Ujjwal Chitnis, Chhotrai Soren, Syed Asaad Bukhari, Sonika Singh |
| On-Site Speaker (Planned) |
Ankur Goswami |
| Abstract Scope |
Being strongly correlated oxides vanadium dioxide (VO2) offers unique advantage to use it as thermal switches, microbolometer, actuator, molecular manipulation etc. because of its metal insulator transition coupled with structural transformation which occurs roughly at 68 oC. Such transformation allows to change its resistance two to three orders of magnitude where semiconducting M1 phase converts to metallic R phase. However, the order of resistance change, and the temperature can be varied by imparting strain onto the film by depositing buffer layer (TiO2) onto the substate (sapphire). Such interface engineering is the basis of the talk where I will focus on the rational choice of growing parameters of VO2 in PLD through design of experiments, followed by interface modification using TiO2 buffer layer on sapphire substrate. Further, multistate transition was also observed. Finally, such strain engineered VO2 films were used in nanomechanical resonators where electrically triggered mechanical modulation was probed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Thin Films and Interfaces, Nanotechnology, Phase Transformations |