Magnetostriction studies up to megagauss fields using fiber Bragg grating technique
Abstract
We here report magnetostriction measurements under pulsed megagauss fields using a high-speed 100 MHz strain monitoring system devised using fiber Bragg grating (FBG) technique with optical filter method. The optical filter method is a detection scheme of the strain of FBG, where the changing Bragg wavelength of the FBG reflection is converted to the intensity of reflected light to enable the 100 MHz measurement. In order to show the usefulness and reliability of the method, we report the measurements for solid oxygen, spin-controlled crystal, and volborthite, a deformed Kagom\'{e} quantum spin lattice, using static magnetic fields up to 7 T and non-destructive millisecond pulse magnets up to 50 T. Then, we show the application of the method for the magnetostriction measurements of CaVO, a two-dimensional antiferromagnet with spin-halves, and LaCoO, an anomalous spin-crossover oxide, in the megagauss fields.
Keywords
Cite
@article{arxiv.1810.10472,
title = {Magnetostriction studies up to megagauss fields using fiber Bragg grating technique},
author = {Akihiko Ikeda and Yasuhiro H. Matsuda and Daisuke Nakamura and Shojiro Takeyama and Hiroshi Tsuda and Kazuya Nomura and Ayumi Shimizu and Akira Matsuo and Toshihiro Nomura and Tatuo C. Kobayashi and Takeshi Yajima and Hajime Ishikawa and Zenji Hiroi and Masahiko Isobe and Touru Yamauchi and Keisuke Sato},
journal= {arXiv preprint arXiv:1810.10472},
year = {2019}
}
Comments
9pages, 6 figures, Conference proceedings for MegaGauss16 at Kashiwa, Japan in Sept. 2018