使用聚焦离子束成型的双级微配对金刚石砧座产生高压。

High-pressure generation using double stage micro-paired diamond anvils shaped by focused ion beam.

作者信息

Sakai Takeshi, Yagi Takehiko, Ohfuji Hiroaki, Irifune Tetsuo, Ohishi Yasuo, Hirao Naohisa, Suzuki Yuya, Kuroda Yasushi, Asakawa Takayuki, Kanemura Takashi

机构信息

Geodynamics Research Center, Ehime University, Matsuyama 790-8577, Japan.

Geochemical Research Center, Graduate School of Science, The University of Tokyo, Tokyo 113-0033, Japan.

出版信息

Rev Sci Instrum. 2015 Mar;86(3):033905. doi: 10.1063/1.4914844.

DOI:10.1063/1.4914844

PMID:25832243

Abstract

Micron-sized diamond anvils with a 3 μm culet were successfully processed using a focused ion beam (FIB) system and the generation of high pressures was confirmed using the double stage diamond anvil cell technique. The difficulty of aligning two second-stage micro-anvils was solved via the paired micro-anvil method. Micro-manufacturing using a FIB system enables us to control anvil shape, process any materials, including nano-polycrystalline diamond and single crystal diamond, and assemble the sample exactly in a very small space between the second-stage anvils. This method is highly reproducible. High pressures over 300 GPa were achieved, and the pressure distribution around the micro-anvil culet was evaluated by using a well-focused synchrotron micro-X-ray beam.

摘要

使用聚焦离子束（FIB）系统成功加工出了具有3μm台面的微米级金刚石砧座，并利用双级金刚石砧座单元技术确认了高压的产生。通过配对微砧座方法解决了两个二级微砧座对准的难题。使用FIB系统进行微制造使我们能够控制砧座形状、加工任何材料，包括纳米多晶金刚石和单晶金刚石，并将样品精确组装在二级砧座之间的非常小的空间内。该方法具有高度的可重复性。实现了超过300 GPa的高压，并使用聚焦良好的同步加速器微X射线束评估了微砧座台面周围的压力分布。