A5038400782- High-pressure geophysics and materials
- Topological Materials and Phenomena
- Phase-change materials and chalcogenides
- Chalcogenide Semiconductor Thin Films
- Metallic Glasses and Amorphous Alloys
- Diamond and Carbon-based Materials Research
- High Entropy Alloys Studies
- Physics of Superconductivity and Magnetism
- Seed Germination and Physiology
- High-Temperature Coating Behaviors
- Glass properties and applications
- Fullerene Chemistry and Applications
- Boron and Carbon Nanomaterials Research
- Luminescence Properties of Advanced Materials
- Perovskite Materials and Applications
- Electronic and Structural Properties of Oxides
- Iron-based superconductors research
- Advanced Thermoelectric Materials and Devices
- Advanced Semiconductor Detectors and Materials
- Microwave Dielectric Ceramics Synthesis
- Advanced materials and composites
- Plant tissue culture and regeneration
- Electrical and Thermal Properties of Materials
- Crystal Structures and Properties
- 2D Materials and Applications
Institute of High Energy Physics
2016-2025
Chinese Academy of Sciences
2002-2025
Southern University of Science and Technology
2020
Wuhan University
2020
Yanshan University
2015-2018
University of Chinese Academy of Sciences
2017
China Agricultural University
2017
Institute of Botany
2007
Institute of Software
2002
KZn 1− x Mn (PO 3 ) phosphors have three phases. Among them, an amorphous phosphor exhibits a wide spectral range of luminescent color tunability and has no TL traps, while the β-KZn strong properties.
Nearly 50% of global primary energy consumption is lost as low-temperature heat. λ-Ti3O5 holds promise for waste heat harvesting and reuse; however, achieving reversible phase transitions between its λ β phases under accessible conditions remains a major challenge. Here, we proposed simple laser method that incorporates element substitution sub-minute synthesis (20–60 s) λ-MxTi3-xO5 (M = Mg, Al, Sc, V, Cr, Mn, or Fe, 0.09 ≤ x 0.42). In particular, aluminum-substituted λ-AlxTi3-xO5...
Despite the extensive and systematic studies of pressure-induced phase transitions in sesqui-chalcogenides, several puzzles still remain to be solved. Here, complicated transitions, amorphization, alloying behaviors binary semiconductor antimony trisulfide (Sb2S3) were observed by performing situ high-pressure angle-dispersive x-ray diffraction, Raman spectroscopy resistance measurements. Upon compression, two are Sb2S3 before it transforms into a high-density amorphous state (HDA). Notably,...
The pressure-induced phase transition of bismuth selenide (Bi2Se3) was investigated by combining theoretical calculations with synchrotron powder X-ray diffraction measurements up to 57.4 GPa. We demonstrated that the ambient-pressure rhombohedral Bi2Se3 crystallized into a monoclinic structure space group C2/m at 9.1 GPa, and eventually body-centered tetragonal I4/mmm about 27.2 This behavior different from transformation sequences Bi2Te3 Sb2Te3. stabilities five structures were studied...
Here, we systematically investigated the pressure dependence of electronic transport and crystal structure GeTe using multiple methods under various hydrostatic conditions. The experiments indicated that a progressive structural evolution occurred from ambient rhombohedral phase (space group [SG]: R3m) to rock-salt (SG: Fm3̅m) then an orthorhombic Pnma). Above 50 GPa, determined developed into body-centered cubic (bcc, SG: Im3̅m) structure, which consisted site-disordered alloy. An...
Abstract There is little information about seed dormancy release and germination behaviour in Vitis amurensis , which one of the most important wild species. This work aimed to investigate characteristics their variation V. seed. Seed was released by: (1) stratification at 5, 10, 15, 20, 25 15/5°C, respectively; (2) 25°C followed by 5°C; (3) 5°C before or after drying; (4) a series relative humidities (RHs) 5 25°C. The freshly harvested dormancy-released seeds were germinated three...
In this work, we revealed that Sb2Se3 has one second-order isostructural phase transitions before it eventually transformed into a site-disordered alloy during compression. Then, rare amorphization of was discovered with decreasing pressure in by performing situ high-pressure X-ray diffraction (XRD) and Raman experiments, which may be owed to the significant difference atomic electronegativity Sb2Se3. Compared original structure, amorphous is more stable at high pressure. Surprisingly,...
The pressure-induced structural transitions of ZnTe are investigated at pressures up to 59.2 GPa in a diamond anvil cell by using synchrotron powder x-ray diffraction method. A phase transition from the initial zinc blende (ZB, ZnTe-I) structure cinnabar (ZnTe-II) is observed 9.6 GPa, followed high pressure orthorhombic (ZnTe-III) with Cmcm symmetry 12.1 GPa. ZB, (space group P3121), Cmcm, P31 and rock salt structures density functional theory calculations. Based on experiments calculations,...
As a phase-change material (PCM), rhombohedral GeTe (space group R3m) was believed to transform the cubic rock-salt phase (B1) at 3–4 GPa, associated with disappearance of Peierls distortion. However, using combination synchrotron X-ray diffraction and theoretical calculations, we found that R3m persists from ambient pressure up pressures about 15.8 in contrast previous reports. Neither B1 observed heating powder experiment. The spurious transformation is caused by changes compression ratio...
The structural transformation and mechanical properties of fullerenes under high pressure have attracted a significant interest. However, the research data on large-cage endohedral metallofullerenes are still rare. Here, we first report high-pressure studies new cocrystal Gd@C82–S8 by in situ X-ray diffraction (XRD) Raman spectroscopy. XRD findings provide consistent evidence no phase transition before pressure-induced irreversible amorphization at about 23 GPa an anisotropic deformation C82...
The tunability of the quasi-to-dimensional honeycomb lattice in iridate Na2IrO3 plays a crucial role realization Kitaev quantum spin liquid state, which has potential applications topological communication and computation. Here, we unveil continuous structural modification, indicated by changes relative reflection intensities d-spacings under high pressures X-ray diffraction experiments. temperature-dependent resistance at various demonstrates turnover point ∼30 GPa, below semiconductor...
We have designed and implemented a novel DLD for controlling pressure compression/decompression rate. Combined with the use of symmetric diamond anvil cells (DACs), adopts three piezo-electric (PE) actuators static load screws to remotely control in accurate consistent manner at room temperature. This device allows us create different loading mechanisms frames variety existing commonly used rather than designing specialized or dedicated various drives. The sample rate that we achieved is up...
Over the past decade, external pressure has been found to play an important role in modulating structures and properties of sesqui-chalcogenides, but several key puzzles still remain be solved. In this work, pressure-induced structural phase transitions, alloying topological superconductivity ternary tetradymites Bi2Te2Se Bi2Se2Te were investigated via situ high-pressure angle-dispersive X-ray diffraction resistance measurements. Both them transform from layered rhombohedral R3̄m structure a...