Glass-limited Yb/Er:NaLuF<sub>4</sub> nanocrystals: reversible hexagonal-to-cubic phase transition and anti-counterfeiting
Shaoxiong Wang, Jidong Lin, Xiaoyan Li, Jiangkun Chen, Changbin Yang, Ping Huang, Yao Cheng, Daqin Chen
Abstract
Yb/Er:NaLuF<sub>4</sub>@glass with <italic>in situ</italic> reversible cubic-to-hexagonal phase transition on cyclic heat-treatment shows practical application in high-level anticounterfeiting.
Topics & Concepts
Materials scienceNanocrystalHexagonal crystal systemPhase (matter)Phase transitionCubic crystal systemHexagonal phaseCrystallographyChemical engineeringCondensed matter physicsNanotechnologyOrganic chemistryChemistryPhysicsEngineeringLuminescence Properties of Advanced MaterialsGlass properties and applicationsPhase-change materials and chalcogenides