A sandwich-like differential B-dot based on EACVD polycrystalline diamond slice

• Autor: Xu, P. ; Yu, Y. ; Xu, L. ; Zhou, H. Y. ; Qiu, C. J.
• Assuntos: Applied physics ; Chemical vapor deposition ; Cubic lattice ; Diamonds ; Gold ; Magnetic fields ; Magnetic measurement ; Magnetic probes ; Mass production ; Organic chemistry ; Photolithography ; Polycrystalline diamond ; Polycrystals ; Pulsed current ; Raman spectra ; Rejection rate ; Temporal resolution
• É parte de: Applied physics letters, 2018-06, Vol.112 (24)
• Descrição: In this article, we present a method of mass production of a standardized high-performance differential B-dot magnetic probe together with the magnetic field measurement in a pulsed current device with the current up to hundreds of kilo-Amperes. A polycrystalline diamond slice produced in an Electron Assisted Chemical Vapor Deposition device is used as the base and insulating material to imprint two symmetric differential loops for the magnetic field measurement. The SP3 carbon bond in the cubic lattice structure of diamond is confirmed by Raman spectra. The thickness of this slice is 20 μm. A gold loop is imprinted onto each surface of the slice by using the photolithography technique. The inner diameter, width, and thickness of each loop are 0.8 mm, 50 μm, and 1 μm, respectively. It provides a way of measuring the pulsed magnetic field with a high spatial and temporal resolution, especially in limited space. This differential magnetic probe has demonstrated a very good common-mode rejection rate through the pulsed magnetic field measurement.
  
• Editor: Melville: American Institute of Physics
  
• Idioma: Inglês