Gyroscopic g factor of rare earth metals

Y. Ogata, H. Chudo, M. Ono, K. Harii, M. Matsuo, S. Maekawa, E. Saitoh

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

We develop the in situ magnetization measurement apparatus for observing the Barnett effect consisting of a fluxgate sensor, a high speed rotor with frequencies of up to 1.5 kHz, and a magnetic shield at room temperature. The effective magnetic field (Barnett field) in a sample arising from rotation magnetizes the sample and is proportional to the rotational frequency. The gyroscopic g factor, g ′, of rare earth metals, in particular, Gd, Tb, and Dy, was estimated to be 2.00 ± 0.08, 1.53 ± 0.17, and 1.15 ± 0.32, respectively, from the slopes of the rotation dependence of the Barnett field. This study provides a technique to determine the g ′ factor even in samples where the spectroscopic method may not be available.

Original languageEnglish
Article number072409
JournalApplied Physics Letters
Volume110
Issue number7
DOIs
Publication statusPublished - 2017 Feb 13

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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