Butsuri
Online ISSN : 2423-8872
Print ISSN : 0029-0181
ISSN-L : 0029-0181
Volume 76 , Issue 5
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  • Naoki Fujiwara, Yoshiya Uwatoko
    Type: Experimental Developments
    2021 Volume 76 Issue 5 Pages 295-301
    Published: May 05, 2021
    Released: May 08, 2021
    JOURNALS RESTRICTED ACCESS

    A miniature cubic-anvil pressure cell having an outer diameter of 60 mm, the smallest cubic-anvil cell to date, was fabricated to insert in a large-bore superconducting magnet. The pressure cell has a sample space of ϕ2.5×1.5 mm, which is fairly large for a pressure cell that can reach a high pressure above 4 GPa. Pressure homogeneity was monitored from the 63Cu nuclear-quadrupole-resonance linewidth of Cu2O up to 6.7 GPa. The linewidth first increased with increasing pressure up to 4 GPa and then saturated above 4 GPa. The pressure homogeneity was better than that of a piston–cylinder pressure cell. This newly developed pressure cell is advantageous because a large sample space and high pressure homogeneity are secured even at high pressures.

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