高等学校化学学报2026，Vol.47Issue(9)：32-49,18.DOI:10.7503/cjcu20260234
原位高压表征技术与压致相变材料研究
In-Situ High-pressure Characterization Techniques and Research on Pressure-induced Phase Transition Materials
摘要
Abstract
High-pressure-induced structural phase transitions constitute a crucial pathway for discovering new phases and understanding material behaviors under extreme conditions.However,the transition pathways,intermediate states,and dynamics have long remained in a"black box",necessitation in situ probing techniques for elucidation.This article reviews the recent progress in in situ probing techniques and mechanistic studies of structural phase tran-sitions in high-pressure solid-state chemistry.First,the principles and applicable scopes of in situ characterization methods are introduced according to information levels,including X-ray diffraction,neutron diffraction,X-ray absorption fine structure,pair distribution function,Raman spectroscopy,infrared spectroscopy,ultraviolet-visible absorption spectroscopy,fluorescence spectroscopy,and second harmonic generation.Emerging directions such as ultrafast time-resolved techniques and machine-learning-assisted data analysis are also discussed.Second,using displacive phase transitions(SrTiO3),reconstructive phase transitions(graphite-diamond,Co3P2O8),pressure-induced amorphization(ice),isostructural phase transitions(Ce),and order-disorder phase transitions(IMMHyPbBr4)as rep-resentative examples,we demonstrate how in situ techniques reveal the microscopic mechanisms of pressure-driven structural evolution.Finally,current bottlenecks in time resolution and data interpretation are summarized,and future directions including multi-technique integration,ultrafast probing,and machine learning are prospected.关键词
压致相变/原位表征/金刚石压砧/同步辐射Key words
Pressure-induced phase transition/In-situ characterization/Diamond anvil cell(DAC)/Synchrotron radiation分类
数理科学引用本文复制引用
裴天遥,王永刚,岳彬彬..原位高压表征技术与压致相变材料研究[J].高等学校化学学报,2026,47(9):32-49,18.基金项目
国家重点研发计划项目(批准号:2023YFA1608804)资助.Supported by the National Key Research and Development Program of China(No.2023YFA1608804). （批准号:2023YFA1608804）
