title: High-pressure generation using double stage micro-paired diamond anvils shaped by focused ion beam.
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.
authors.affiliation: Geodynamics Research Center, Ehime University, Matsuyama 790-8577, Japan.
authors.forename: Takeshi
authors.initials: T
authors.lastname: Sakai
authors.affiliation: Geochemical Research Center, Graduate School of Science, The University of Tokyo, Tokyo 113-0033, Japan.
authors.forename: Takehiko
authors.initials: T
authors.lastname: Yagi
authors.affiliation: Geodynamics Research Center, Ehime University, Matsuyama 790-8577, Japan.
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Ohfuji
authors.affiliation: Geodynamics Research Center, Ehime University, Matsuyama 790-8577, Japan.
authors.forename: Tetsuo
authors.initials: T
authors.lastname: Irifune
authors.affiliation: Japan Synchrotron Radiation Research Institute, Hyogo 679-5198, Japan.
authors.forename: Yasuo
authors.initials: Y
authors.lastname: Ohishi
authors.affiliation: Japan Synchrotron Radiation Research Institute, Hyogo 679-5198, Japan.
authors.forename: Naohisa
authors.initials: N
authors.lastname: Hirao
authors.affiliation: HITACHI High-Technologies, Hitachinaka 312-0033, Japan.
authors.forename: Yuya
authors.initials: Y
authors.lastname: Suzuki
authors.affiliation: HITACHI High-Technologies, Hitachinaka 312-0033, Japan.
authors.forename: Yasushi
authors.initials: Y
authors.lastname: Kuroda
authors.affiliation: HITACHI High-Technologies, Hitachinaka 312-0033, Japan.
authors.forename: Takayuki
authors.initials: T
authors.lastname: Asakawa
authors.affiliation: HITACHI High-Technologies, Hitachinaka 312-0033, Japan.
authors.forename: Takashi
authors.initials: T
authors.lastname: Kanemura