Application of nano-polycrystalline diamond to high-pressure generation using multianvil apparatus

• Project/Area Number: 26800236
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Solid earth and planetary physics
• Research Institution: Ehime University
• Principal Investigator: Kunimoto Takehiro 愛媛大学, 地球深部ダイナミクス研究センター, 特定研究員 (20543169)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000); Fiscal Year 2015: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2014: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
• Keywords: 川井式マルチアンビル装置 / ナノダイヤモンド多結晶体 / 高圧発生 / マルチアンビル装置 / ６－６－８加圧方式 / 超高圧発生 / 新開発超硬合金 / 圧力発生

Outline of Final Research Achievements

Kawai-type multi-anvil apparatus (KMA) has been widely used in high-pressure experiments, where accurately controlled pressure and temperature in larger sample volumes are available using tungsten carbide or sintered diamond as the anvil materials. However, the generated pressures in KMA with conventional anvils have been limited to about 40 GPa. We have been attempting to generate further higher pressures using nano-polycrystalline diamond (NPD) anvils with the “6-6-8” anvil configurations. As a result, the maximum pressure achieved at room temperature is about 88 GPa at a press load of 3.4 MN, which is far higher than that achieved using SD anvils (~56 GPa). Moreover, it was found that both in situ X-ray diffraction measurements and imaging observations are possible even through the NPD anvils, which is great advantage over the experiments using SD anvils where the invisibility of the sample becomes a serious issue due to the plastic deformation of anvils under such high pressure.

Research Products

• [Journal Article] Pressure generation to 50 GPa in Kawai-type multianvil apparatus using newly developed tungsten carbide anvils (2016)
  • Author(s): Takehiro Kunimoto, Tetsuo Irifune, Yoshinori Tange, Kohei Wada
  • Journal Title: High Pressure Research Volume: 未定(published online) Issue: 2 Pages: 97-104
  • DOI: 10.1080/08957959.2016.1148149
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Magnetic Properties of Shandite-Phase Co3－xFexSn2S2 (x = 0-1.0) Obtained with High Pressure Synthesis (2015)
  • Author(s): Yuki Sakai, Ryota Tanakadate, Masanori Matoba, Ikuya Yamada, Norimasa Nishiyama, Tetsuo Irifune, Kenichi Funakoshi, Takehiro Kunimoto, Yuji Higo, Yoichi Kamihara
  • Journal Title: Journal of the Physical Society of Japan Volume: 84 Issue: 4 Pages: 44705-44711
  • DOI: 10.7566/jpsj.84.044705
  • NAID: 210000133519
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] New phases of binary compounds: CsCl-type RuGe and RuSn (2014)
  • Author(s): Sakai, Y., Matoba, M., Yamada, I., Funakoshi, K., Kunimoto, T., Higo, Y., Kamihara, Y.
  • Journal Title: EPL Volume: 207 Issue: 5 Pages: 56003-56003
  • DOI: 10.1209/0295-5075/107/56003
  • Peer Reviewed
• [Journal Article] High pressure study of transition metal monoxides MnO and CoO: Structure and electrical resistance (2014)
  • Author(s): E Ito, D Yamazaki, T Yoshino, S Shan, X Guo, N Tsujimo, T Kunimoto, Y Higo, K Funakoshi
  • Journal Title: Physics of the Earth and Planetary Interiors Volume: 228 Pages: 170-175
  • Peer Reviewed / Acknowledgement Compliant
• [Presentation] Development of Kawai-type multianvil technology using nano-polycrystalline diamond anvils (2016)
  • Author(s): Tetsuo Irifune, Takehiro Kunimoto
  • Organizer: American Geophysical Union Fall Meeting
  • Place of Presentation: Moscone center、アメリカ合衆国
  • Year and Date: 2016-12-12
  • Int'l Joint Research
• [Presentation] Nano-polycrystalline diamond and applications to deep Earth mineralogy (2016)
  • Author(s): Tetsuo Irifune
  • Organizer: 2016 International Conference on the Earth's Deep Interior
  • Place of Presentation: New beacon Luguang International Hotel in Wuhan, China
  • Year and Date: 2016-11-05
  • Int'l Joint Research / Invited
• [Presentation] ナノダイヤモンド多結晶体製アンビルを用いた川井式マルチアンビル装置による90 GPa領域の超高圧発生 (2016)
  • Author(s): 國本健広、入舩徹男
  • Organizer: 第５７回高圧討論会
  • Place of Presentation: 筑波大学、茨城県、つくば市
  • Year and Date: 2016-10-26
• [Presentation] New tungsten carbide anvils potentially important for melting experiments under lower mantle conditions (2016)
  • Author(s): Irifune Tetsuo, Kunimoto Takehiro, Yoshinori Tange, Wada Kohei
  • Organizer: Japan Geoscience Union Meeting 2016
  • Place of Presentation: 幕張メッセ（千葉県千葉市）
  • Year and Date: 2016-05-22
  • Int'l Joint Research
• [Presentation] 新開発超硬アンビルを用いた川井式マルチアンビル装置による50 GPa領域の超高圧発生 (2015)
  • Author(s): 國本健広、入舩徹男、丹下慶範、和田光平
  • Organizer: 第５６回高圧討論会
  • Place of Presentation: アステールプラザ（広島県広島市）
  • Year and Date: 2015-11-10
• [Presentation] Combined in situ X-ray and electrical resistance observations of the pressure- induced phase transitions in ZnTe, ZnS, GaAs, and GaP up to 25 GPa (2015)
  • Author(s): Takehiro Kunimoto and Irifune tetsuo
  • Organizer: AIRAPT-25 and EHPRG-53
  • Place of Presentation: Madrid Spain
  • Year and Date: 2015-08-30 – 2015-09-04
• [Presentation] 高圧X線その場観察実験と電気抵抗測定によるGaP,GaAs,ZnS,ZnTeの構造相転移と圧力誘起金属化の観察 (2014)
  • Author(s): 國本健広 入舩徹男
  • Organizer: 高圧討論会
  • Place of Presentation: 徳島大学(徳島市、徳島県)
  • Year and Date: 2014-11-22 – 2014-11-24
• [Presentation] In situ X-ray observations of phase transitions in MgCr2O4 up to 30 GPa using Kawai-type multianvil apparatus (2014)
  • Author(s): Takehiro Kunimoto and Tetsuo Irifune
  • Organizer: Asia Oceania Geoscience Society
  • Place of Presentation: ロイトン札幌(札幌市, 北海道)
  • Year and Date: 2014-07-28 – 2014-08-01