Related Experiment Video
Updated: Jan 9, 2026

Atomic Layer Deposition of Vanadium Dioxide and a Temperature-dependent Optical Model
Published on: May 23, 2018
A new order parameter model for the structural phase transitions in VO2-based solid solutions
Il Hwan Kim1, Jong Song Ri1, Un Ik Kang1
1Department of Physics, Kim Hyong Jik University of Education, Dongdaewon district, Pyongyang, Democratic People's Republic of Korea.
Abstract:
To describe the structural phase transitions P42/mnm(R) ↔ P21/c(M1) ↔ P1(T) ↔ C2/m(M2) observed experimentally in VO2 and its solid solutions, the two-component order parameter model is newly proposed. We identify the space groups of 102 ordered phases induced by the 36 irreducible representations of the ten star channel groups related to six Lifshitz stars in the Brillouin zone of space group P42/mnm, and show that these are characterized by the invariant characteristic quantities of four image groups (L groups). In particular, it is shown that the two-component order parameter model transformed according to the two-dimensional irreducible representation T2 of star channel group P42/mnm[k16(1)] is far more effective than the four-component one for describing the phase transitions observed experimentally in VO2 and its solid solutions. The structurally stable Landau potential models with one to five varying parameters and invariant under the L28(4mm) group are suggested for the phenomenological studies based on the two-component order parameter model. By using the eighth-order Landau potential model with three varying parameters, the coefficient phase diagram and the temperature-concentration phase diagram are theoretically constructed, which are in good agreement with the experimental data of V1-xAlxO2.
More Related Videos
10:08Phase Behavior of Charged Vesicles Under Symmetric and Asymmetric Solution Conditions Monitored with Fluorescence Microscopy
Published on: October 24, 2017
08:55Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses
Published on: June 7, 2018
Related Concept Videos
Phase Transitions
Phase Transitions: Sublimation and Deposition
Phase Diagram
Phase Transitions: Vaporization and Condensation
Phase Transitions: Melting and Freezing
Phase Diagrams