Magnetic resonance of GdAs

K. Koyama, M. Yoshida, H. Nojiri, T. Sakon, M. Motokawa, D. X. Li, T. Suzuki

Research output: Contribution to journalConference articlepeer-review

5 Citations (Scopus)


Electron spin resonance measurements on a single-crystalline and a powder GdAs have been performed in the temperature range from 4.2 to 40 K and in the frequency range from 55 to 585 GHz to obtain microscopic information about the magnetic structure. The results obtained indicate that GdAs is an `easy-plane' antiferromagnet with the magnetic moment lying in the (1 1 1) plane below Neel temperature (approximately 19 K). According to an analysis of mean-field approximation, the exchange field and the out-of-plane anisotropy field have been estimated to be μ0HE = 8.1 T and μ0HA = 1.4 T, respectively. The transition field (Hc = 2HE+HA) from the antiferromagnetic to the forced ferromagnetic state is deduced to be 17.6 T which is in good agreement with the result of high-field magnetization measurement by Li et al.

Original languageEnglish
Pages (from-to)456-457
Number of pages2
JournalPhysica B: Condensed Matter
Publication statusPublished - 2000 Jun 1
EventYamada Conference LI - The International Conference on Strongly Correlated Electron Systems (SCES '99) - Nagano, Jpn
Duration: 1999 Aug 241999 Aug 28


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