Zr-based bulk metallic glass clamp cell for high-pressure inelastic neutron scattering

Hayashida, Shohei*; Wada, Takeshi*; Ishikado, Motoyuki*; Munakata, Koji*; Iida, Kazuki*; Kamazawa, Kazuya*; Kajimoto, Ryoichi  ; Inamura, Yasuhiro  ; Nakamura, Mitsutaka   ; Iwasa, Kazuaki*; Oyama, Kenji*; Kato, Hidemi*; Kira, Hiroshi*; Matsuura, Masato*; Uwatoko, Yoshiya*

We report the fabrication and characterization of a Zr-based bulk metallic glass (Zr-BMG) clamp cell designed for high-pressure inelastic neutron scattering (INS) measurements. The INS spectra of the empty cell exhibit broad and featureless backgrounds, reflecting the amorphous structure of the Zr-BMG. Test measurements using a reference sample, CsFeCl, confirm that the neutron transmission of the Zr-BMG cell is significantly higher than that of a conventional monobloc CuBe clamp cell. These results demonstrate that the Zr-BMG clamp cell provides both enhanced neutron transparency and a clean background profile, thereby advancing high-pressure INS studies.