title: Development of multi-frequency ESR system for high-pressure measurements up to 2.5 GPa.
abstract: A new piston-cylinder pressure cell for electron spin resonance (ESR) has been developed. The pressure cell consists of a double-layer hybrid-type cylinder with internal components made of the ZrO2-based ceramics. It can generate a pressure of 2 GPa repeatedly and reaches a maximum pressure of around 2.5 GPa. A high-pressure ESR system using a cryogen-free superconducting magnet up 10T has also been developed for this hybrid-type pressure cell. The frequency region is from 50 GHz to 400 GHz. This is the first time a pressure above 2 GPa has been achieved in multi-frequency ESR system using a piston-cylinder pressure cell. We demonstrate its potential by showing the results of the high-pressure ESR of the S=1 system with the single ion anisotropy NiSnCl6·6H2O and the S=1/2 quantum spin system CsCuCl3. We performed ESR measurements of these systems above 2 GPa successfully.
authors: Center for Supports to Research and Education Activities, Kobe University, Nada, Kobe 657-8501, Japan. Electronic address: tsakurai@kobe-u.ac.jp.
authors: T
authors: T
authors: Sakurai
authors: Graduate School of Science, Kobe University, Nada, Kobe 657-8501, Japan.
authors: K
authors: K
authors: Fujimoto
authors: Graduate School of Science, Kobe University, Nada, Kobe 657-8501, Japan.
authors: R
authors: R
authors: Matsui
authors: Graduate School of Science, Kobe University, Nada, Kobe 657-8501, Japan.
authors: K
authors: K
authors: Kawasaki
authors: Molecular Photoscience Research Center, Kobe University, Nada, Kobe 657-8501, Japan.
authors: S
authors: S
authors: Okubo
authors: Graduate School of Science, Kobe University, Nada, Kobe 657-8501, Japan; Molecular Photoscience Research Center, Kobe University, Nada, Kobe 657-8501, Japan.
authors: H
authors: H
authors: Ohta
authors: Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581, Japan.
authors: K
authors: K
authors: Matsubayashi
authors: Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581, Japan.
authors: Y
authors: Y
authors: Uwatoko
authors: Department of Physics, Tokyo Institute of Technology, Meguro, Tokyo 152-8550, Japan.
authors: H
authors: H
authors: Tanaka
keywords: CsCuCl(3); High-pressure ESR; Hybrid-type pressure cell; NiSnCl(6)·6H(2)O; ZrO(2)-based ceramic