Tailoring high-quality germanium crystal via high magnetic field
Abstract
High-quality germanium single crystals are vital for infrared and semiconductor applications but are plagued by melt convection during growth. This study demonstrates that applying a 10 T high magnetic field during directional solidification stabilizes the solid–liquid interface and reduces dislocation density by over 35%. The resulting crystals exhibit significantly higher electrical resistivity and an 89% improvement in infrared transmittance. This method provides a practical ground-based route to achieving microgravity-like growth conditions for superior germanium crystals.
Article Details
Journal Info
Applied Physics Letters
American Institute of Physics
Authors (13)
Meilong Feng
State Key Laboratory of Materials for Advanced Nuclear Energy & Shanghai Key Laboratory of Advanced Ferrometallurgy & School of Materials Science and Engineering, Shanghai University , 200444 Shanghai,
Congjiang Zhang
State Key Laboratory of Materials for Advanced Nuclear Energy & Shanghai Key Laboratory of Advanced Ferrometallurgy & School of Materials Science and Engineering, Shanghai University , 200444 Shanghai,
Zhuolin Li
Bangfei Zhou
State Key Laboratory of Materials for Advanced Nuclear Energy & Shanghai Key Laboratory of Advanced Ferrometallurgy & School of Materials Science and Engineering, Shanghai University , 200444 Shanghai,
Zhe Shen
Department of Neurobiology, School of Biological Sciences, University of California
Qiang Li
Biao Ding
State Key Laboratory of Advanced Special Steel, Shanghai Key Laboratory of Advanced Ferromletallurgy, School of Materials Science and Engineering, Shanghai University
Peijian Shi
State Key Laboratory of Advanced Special Steel, Shanghai Key Laboratory of Advanced Ferromletallurgy, School of Materials Science and Engineering, Shanghai University
Zhongze Lin
State Key Laboratory of Materials for Advanced Nuclear Energy & Shanghai Key Laboratory of Advanced Ferrometallurgy & School of Materials Science and Engineering, Shanghai University , 200444 Shanghai,
Weili Ren
State Key Laboratory of Advanced Special Steel, Shanghai Key Laboratory of Advanced Ferromletallurgy, School of Materials Science and Engineering, Shanghai University
Wenhao Lin
Tianxiang Zheng
College of Science
Yunbo Zhong
State Key Laboratory of Advanced Special Steel, Shanghai Key Laboratory of Advanced Ferromletallurgy, School of Materials Science and Engineering, Shanghai University