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Updated: Aug 13, 2026
11:10
Atomic Layer Deposition of Vanadium Dioxide and a Temperature-dependent Optical Model
Published on: May 23, 2018
Orientation-Engineered Insulator-Metal Transition in Vanadium Dioxide
Xuanchi Zhou1,2, Xiaohui Yao1, Wentian Lu1,2
1Key Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education and School of Materials Science and Engineering, Shanxi Normal University, Taiyuan, China.
Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|August 11, 2026
Summary
Crystallographic orientation engineering in vanadium dioxide (VO2) enables tunable insulator-metal transitions (IMTs). This strategy controls electronic states and anisotropic transport, paving the way for advanced electronic devices.
Area of Science:
- Materials Science
- Condensed Matter Physics
- Solid State Chemistry
Background:
- Correlated oxides offer pathways to exotic electronic states via microstructural design.
- Vanadium dioxide (VO2) exhibits insulator-metal transitions (IMTs) sensitive to external stimuli.
Purpose of the Study:
- To demonstrate crystallographic orientation as a method for designing IMT functionality in VO2.
- To explore anisotropic transport and accelerated phase transitions in engineered VO2 heterostructures.
Main Methods:
- Rutile-on-rutile epitaxy of VO2/TiO2 heterostructures to control VO2 cR-axis orientation.
- Utilizing high-Miller-index (102) orientation for mirror-symmetry breaking.
- Theoretical calculations and synchrotron analysis to investigate hydrogen-induced phase modulation.
Main Results:
- Controlled cR-axis orientation in VO2/TiO2 reduced the IMT critical temperature (T_IMT).
- The (102) orientation induced in-plane anisotropic IMT behaviors.
- Protonation via inclined oxygen channels facilitated tunable electronic phase modulations, enabling high-speed iontronics.
Conclusions:
- Crystallographic orientation is a powerful tool for tuning IMT functionality in correlated systems.
- Engineered VO2 heterostructures can access exotic correlated electronic states.
- This approach is critical for developing advanced electronic and iontronic devices.
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