A5066915276- Magnetic properties of thin films
- Photonic Crystals and Applications
- Multiferroics and related materials
- Metamaterials and Metasurfaces Applications
- Terahertz technology and applications
- Magnetic and transport properties of perovskites and related materials
- Space Satellite Systems and Control
- Superconducting and THz Device Technology
- Spacecraft Dynamics and Control
- Advanced Antenna and Metasurface Technologies
- Modular Robots and Swarm Intelligence
- Magnetic Properties and Synthesis of Ferrites
- Antenna Design and Analysis
- Astro and Planetary Science
- Gas Dynamics and Kinetic Theory
- Topological Materials and Phenomena
- Magnetic Properties and Applications
- Additive Manufacturing and 3D Printing Technologies
- Advanced Materials and Mechanics
- Microwave Engineering and Waveguides
University of Science and Technology Beijing
2021-2023
Tsinghua University
2015-2022
State Key Laboratory of New Ceramics and Fine Processing
2015-2022
Tsinghua–Berkeley Shenzhen Institute
2022
Nanjing University of Aeronautics and Astronautics
2022
University Town of Shenzhen
2015-2021
The terahertz magnetic properties of perovskite-like SmFeO3 ceramic are investigated over a broad temperature range, especially at ultralow temperatures, using time-domain spectroscopy. It is shown that both resonant frequencies quasi-ferromagnetic and quasi-antiferromagnetic modes have blue shifts with the decreasing due to enhancement effective field. temperature-dependent anisotropy constants further estimated frequencies, under approximation omitting contribution Sm(3+) moments...
Both continuous and discontinuous spin reorientation transitions in the HoFeO₃ orthoferrite have been further investigated this paper. Here, we use terahertz spectroscopy through ferromagnetic antiferromagnetic resonances to study thermodynamics of ceramics. The reorientations are driven by changes anisotropy energy, moments out (a, c) plane correspond transitions. We fitted resonant frequencies, achieved quantitative insight on energy. Measuring M-H (moment-magnetic field) curves, found...
The integration of terahertz waves with metamaterials has become a key goal in modern photonics. In this work, we designed grating-structured and face-centered-cubic (fcc) based on TbFeO3 dielectric ceramics built these materials using 3D direct writing technology. To simulate the behavior metamaterials, constant ceramic was determined. desired strong electric magnetic resonances were excited metamaterials. showed increased polarization-dependent transmittance as line spacing decreased,...
Abstract Rare‐earth orthoferrites with weak ferromagnetism have become one of the most fascinating topics in antiferromagnet research because their potential application future information technologies. However, an appropriate and direct way to reduce noise intrinsic but resonances rare‐earth is currently lacking, creating difficulties analysis. Here, we report a numerical smoothing method directly denoise detected terahertz (THz) responses using B ‐spline algorithm. For comparison,...
Terahertz (THz) radiation excites electronic and optical modes of many materials, controlling interaction these materials with THz pulses provides a fascinating avenue to achieve unprecedented functionalities in return. Here, woodpile-structured rare-earth orthoferrite metamaterials built 3-D direct ink writing technology are proposed experimentally demonstrated. Polarization-independent refraction switching resonances by varying the number layers structure, as well structural parameters...
Metamaterials display many electromagnetic properties, such as the manipulation of waves through arrangement small discrete structures. However, complex designs mechanically or electrically patterned structures are required to modify these properties. We report on use rare earth orthoferrites tune transmitted by engineering thickness, composition, and temperature using terahertz (THz) time-domain spectroscopy. The modeling process manipulating helps elucidate manipulated amplitude,...
In this paper, titanium-doped gadolinium orthoferrite ceramics with the composition of GdFe1-xTixO3 were prepared, and phase structure, Raman spectra, macroscopic magnetic property, terahertz response thoroughly investigated. It is shown that as Ti content reaches 10 at%, diffraction peaks low-frequency modes shift red due to lattice expansion. The increased ferromagnetic (F) component by addition results in enhancement magnetization at low temperatures well emergency F mode transmission...