Ultrasound measurement technique for the single-turn-coil magnets
Toshihiro Nomura, A. Hauspurg, D. I. Gorbunov, Atsuhiko Miyata, E. Schulze, S. A. Zvyagin, V. Tsurkan, Yasuhiro H. Matsuda, Yoshimitsu Kohama, S. Zherlitsyn
Abstract
Ultrasound is a powerful means to study numerous phenomena of condensed-matter physics as acoustic waves couple strongly to structural, magnetic, orbital, and charge degrees of freedom. In this paper, we present such a technique combined with single-turn coils (STCs) that generate magnetic fields beyond 100 T with the typical pulse duration of 6 µs. As a benchmark of this technique, the ultrasound results for MnCr2S4, Cu6[Si6O18]·6H2O, and liquid oxygen are shown. The resolution for the relative sound-velocity change in the STC is estimated as Δv/v ∼ 10−3, which is sufficient to study various field-induced phase transitions and critical phenomena.