ESR measurements of GdBi

K. Koyama, T. Tomimatsu, M. Yoshida, D. X. Li, M. Motokawa

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1 Citation (Scopus)


Electron spin resonance (ESR) measurements on a single crystal of GdBi have been performed using a vector network analyzer (VNA) in the frequency range between 57 and 107 GHz, in the temperature range from 50 to 1.7 K and in magnetic fields up to 14 T using a superconducting magnet to obtain the microscopic information about the basic magnetic properties. Above 15 K, the observed absorption corresponds to g = 2.0 of Gd3+. However, the resonance field shifts to lower field with decreasing temperature from 4.2 K, which cannot be explained by "usual" antiferromagnetic resonance (AFMR) modes but suggests that the hyperfine field due to the Bi nuclear moments affects the AFMR of GdBi. 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.

Original languageEnglish
Pages (from-to)155-159
Number of pages5
JournalPhysica B: Condensed Matter
Issue number1-4
Publication statusPublished - 2004 Apr 30
EventProceedings of the 7th International Symposium on Research - Toulouse, France
Duration: 2003 Jul 202003 Jul 23


  • Antiferromagnetic resonance
  • Electron spin resonance
  • Hyperfine interaction


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