Observation of antiferromagnetic resonance affected by hyperfine interaction in GdBi

Takahiro Tomimatsu; Keiichi Koyama; Makoto Yoshida; Dexin Li; Mitsuhiro Motokawa

Observation of antiferromagnetic resonance affected by hyperfine interaction in GdBi

Takahiro Tomimatsu, Keiichi Koyama, Makoto Yoshida, Dexin Li, Mitsuhiro Motokawa

IMR - Materials Processing and Characterization Division

Tohoku University

Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

Abstract

Electron spin resonance (ESR) measurements on a single crystal of GdBi have been performed in the temperature range from 50 to 1.7 K at the frequency range between 58 and 107 GHz to obtain the microscopic information about the magnetic properties. The absorption line of ESR corresponding to g = 2 of the Gd³⁺ ion is observed at temperatures between 50 and 10 K. With decreasing temperature from 7 K, the absorption line shifts to lower field side. The results obtained indicate that the shift in resonance field is due to a temperature-dependent anisotropy field arising from hyperfine interaction of Gd spin with the Bi nuclear moments. The estimated values of the anisotropy field and the hyperfine anisotropy field are B_a=5.6 × 10^-4 T and B_n=7.9 × 10^-3 T, respectively, at 4.2 K.

Original language	English
Article number	014406
Pages (from-to)	144061-144064
Number of pages	4
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	67
Issue number	1
Publication status	Published - 2003 Jan 1

Cite this

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title = "Observation of antiferromagnetic resonance affected by hyperfine interaction in GdBi",

abstract = "Electron spin resonance (ESR) measurements on a single crystal of GdBi have been performed in the temperature range from 50 to 1.7 K at the frequency range between 58 and 107 GHz to obtain the microscopic information about the magnetic properties. The absorption line of ESR corresponding to g = 2 of the Gd3+ ion is observed at temperatures between 50 and 10 K. With decreasing temperature from 7 K, the absorption line shifts to lower field side. The results obtained indicate that the shift in resonance field is due to a temperature-dependent anisotropy field arising from hyperfine interaction of Gd spin with the Bi nuclear moments. The estimated values of the anisotropy field and the hyperfine anisotropy field are Ba=5.6 × 10-4 T and Bn=7.9 × 10-3 T, respectively, at 4.2 K.",

author = "Takahiro Tomimatsu and Keiichi Koyama and Makoto Yoshida and Dexin Li and Mitsuhiro Motokawa",

year = "2003",

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T1 - Observation of antiferromagnetic resonance affected by hyperfine interaction in GdBi

AU - Tomimatsu, Takahiro

AU - Koyama, Keiichi

AU - Yoshida, Makoto

AU - Li, Dexin

AU - Motokawa, Mitsuhiro

PY - 2003/1/1

Y1 - 2003/1/1

N2 - Electron spin resonance (ESR) measurements on a single crystal of GdBi have been performed in the temperature range from 50 to 1.7 K at the frequency range between 58 and 107 GHz to obtain the microscopic information about the magnetic properties. The absorption line of ESR corresponding to g = 2 of the Gd3+ ion is observed at temperatures between 50 and 10 K. With decreasing temperature from 7 K, the absorption line shifts to lower field side. The results obtained indicate that the shift in resonance field is due to a temperature-dependent anisotropy field arising from hyperfine interaction of Gd spin with the Bi nuclear moments. The estimated values of the anisotropy field and the hyperfine anisotropy field are Ba=5.6 × 10-4 T and Bn=7.9 × 10-3 T, respectively, at 4.2 K.

AB - Electron spin resonance (ESR) measurements on a single crystal of GdBi have been performed in the temperature range from 50 to 1.7 K at the frequency range between 58 and 107 GHz to obtain the microscopic information about the magnetic properties. The absorption line of ESR corresponding to g = 2 of the Gd3+ ion is observed at temperatures between 50 and 10 K. With decreasing temperature from 7 K, the absorption line shifts to lower field side. The results obtained indicate that the shift in resonance field is due to a temperature-dependent anisotropy field arising from hyperfine interaction of Gd spin with the Bi nuclear moments. The estimated values of the anisotropy field and the hyperfine anisotropy field are Ba=5.6 × 10-4 T and Bn=7.9 × 10-3 T, respectively, at 4.2 K.

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Observation of antiferromagnetic resonance affected by hyperfine interaction in GdBi

Abstract

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