arrow
返回

A new order parameter model for the structural phase transitions in VO2-based solid solutions

delete2026-01-01
delete0
PRE
AI
I
Il Hwan Kim *
J
Jong Song Ri
U
U Kang
I
Il Hun Kim *
K
Kum Ok Jang
S
S. Kim
DOI:10.1107/S2053273325002232delete
delete原文链接
delete原文求助
delete分享
delete收藏
摘要

摘要

En 中文
为描述在VO2及其固溶体中实验观察到的P4(2)/mnm(R)↔P2(1)/c(M-1)↔P (1)¯(T)↔C2/m(M-2)结构相变,提出了新的两分量序参量模型。我们确定了布里渊区中与空间群P4(2)/mnm的六个Lifshitz星相关的十个星通道群的36个不可约表示所诱导的102个有序相的空间群,并表明这些相由四个图像群(L群)的不变特征量表征。特别地,表明根据星通道群P4(2)/mnm[k(16)((1))]的二维度不可约表示T-2变换的两分量序参量模型,在描述VO2及其固溶体中实验观察到的相变方面远比四分量模型更有效。基于两分量序参量模型,提出了具有1至5个可变参数且在L-2(8)(4mm)群下不变的稳定结构朗道势能模型,用于唯象研究。通过使用具有三个可变参数的八阶朗道势能模型,构建了系数相图和温度-浓度相图,其与V1-xAlxO2的实验数据吻合良好。
Keyword:
VO2-based solid solutions
structural phase transitions
wavevector star channel groups
order parameter
symmetry
structurally stable Landau potential model
temperature-concentration phase diagram

期刊

A
Acta Crystallographica A-Foundation and Advances
IF:
1.8
论文数:
161
被引数:
1.0W

机构

暂无机构信息
引用论文

引用论文

Contribution a l'etude structurale des phases V1-xCrxO2
err1973-09-01
err0
PREAI
errG. Villeneuve; M. Drillon; P. Hagenmuller
err分享
err收藏
Mechanism and observation of Mott transition in VO2-based two- and three-terminal devices基于VO2 的两端和三端器件中Mott跃迁的机理和观察
err2004-05-18
err0
errOAAI
errHyun-Tak Kim; Byung-Gyu Chae; Doo-Hyeb Youn; Sung-Lyul Maeng; Gyungock Kim; Kwang-Yong Kang; Yong-Sik Lim
err分享
err收藏
Singularities of Differentiable Maps
err
IF0
err1985-01-01
err0
errOAAI
errV. I. Arnold; S. M. Gusein-Zade; A. N. Varchenko
err分享
err收藏
VO2: Peierls or Mott-Hubbard? A view from band theory
err1994-05-23
err0
PREAI
errRenata M. Wentzcovitch; Werner W. Schulz; Philip B. Allen
err分享
err收藏
Phase Transitions and Crystal Symmetry
err
IF0
err1990-01-01
err0
PREAI
errYu. A. Izyumov; V. N. Syromyatnikov
err分享
err收藏
Le systeme V1−xFexO2: Proprietes structurales et magnetiques
err1976-02-01
err0
PREAI
errEmil Pollert; Gérard Villeneuve; Francis Ménil; Paul Hagenmuller
err分享
err收藏
学者 查看更多内容