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Report No.

Gyroscopic $$g$$ factor of rare earth metals

Ogata, Yudai; Chudo, Hiroyuki ; Ono, Masao ; Harii, Kazuya; Matsuo, Mamoru; Maekawa, Sadamichi; Saito, Eiji

We develop the $$in$$ $$situ$$ magnetization measurement apparatus for observing the Barnett effect consisting of a fluxgate sensor, high speed rotor with frequencies of up to 1.5 kHz, and 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 were estimated to be 2.00$$pm$$0.08, 1.53$$pm$$0.17, and 1.15$$pm$$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.



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Category:Physics, Applied



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