A5103211128- Multiferroics and related materials
- Ferroelectric and Piezoelectric Materials
- Electronic and Structural Properties of Oxides
- Acoustic Wave Resonator Technologies
- Copper-based nanomaterials and applications
- Advanced Semiconductor Detectors and Materials
- ZnO doping and properties
- Magnetic and transport properties of perovskites and related materials
- Geophysical and Geoelectrical Methods
- Thermal Radiation and Cooling Technologies
- Thermal properties of materials
- Chalcogenide Semiconductor Thin Films
- Acoustic Wave Phenomena Research
- nanoparticles nucleation surface interactions
- Gas Sensing Nanomaterials and Sensors
Centre National de la Recherche Scientifique
2023-2025
Université Paris-Saclay
2023-2025
Laboratoire de physique des Solides
2023-2025
Fudan University
2020
State Key Laboratory of Surface Physics
2020
Marshall Space Flight Center
1993-2000
In transition metal oxides, electron–electron interaction and lattice degree of freedom are basic ingredients emergent phenomena, such as metal-to-insulator (MIT) superconductivity. Perovskite rare-earth nickelates largely studied for their temperature-driven MIT, which is accompanied by a breathing-mode distortion associated with bond-disproportionation the expanded (3d8L0) compressed (3d8L2) NiO6 octahedra. Steric effects control onset temperature latter being concomitant or not complex...
We study the complex ferroelastic/ferroelectric domain structure in prototypical ferroelectric PbTiO3 epitaxially strained on (110)o-oriented DyScO3 substrates, using a combination of atomic force microscopy, laboratory and synchrotron x-ray diffraction, high resolution scanning transmission electron microscopy. observe that anisotropic strain imposed by orthorhombic substrate creates large asymmetry configuration, with walls macroscopically aligned along one two in-plane directions. show...
Nonlinear (temperature-dependent) thermal conductivities are common in nature, so their in-depth studies valuable to practical applications. However, for core-shell metamaterials with nonlinear conductivities, only an approximate theory was proposed deal weak nonlinearity, and almost no can handle strong nonlinearity strictly. To solve this problem, we propose a rigorous under certain conditions calculate the effective of whether or strong. Furthermore, design intelligent applications...
We investigate nanoscale domain engineering via epitaxial coupling in a set of SrRuO3/PbTiO3/SrRuO3 heterostructures epitaxially grown on (110)o-oriented DyScO3 substrates. The SrRuO3 layer thickness is kept at 55 unit cells, whereas the PbTiO3 to thicknesses 23, 45, and 90 cells. Through combination atomic force microscopy, x-ray diffraction, high resolution scanning transmission electron microscopy studies, we find that above certain critical ferroelectric layer, large structural...
We investigate nanoscale domain engineering via epitaxial coupling in a set of SrRuO$_3$/PbTiO$_3$/SrRuO$_3$ heterostructures epitaxially grown on (110)$_o$-oriented DyScO$_3$ substrates. The SrRuO$_3$ layer thickness is kept at 55 unit cells, whereas the PbTiO$_3$ to thicknesses 23, 45 and 90 cells. Through combination atomic force microscopy, x-ray diffraction high resolution scanning transmission electron microscopy studies, we find that above certain critical ferroelectric layer, large...