Ga NMR/NQR study in UGa3

K. Ikushima, D. Aoki, Y. Haga, E. Yamamoto, Y. Onuki

研究成果: ジャーナルへの寄稿学術論文査読

6 被引用数 (Scopus)

抄録

Microscopic magnetic properties of a uraniun intermetallic compound, UGa3 (TN = 67 K), have been investigated by the 69Ga and 71Ga NMR/NQR measurements. We found a drastic temperature (T-) dependence of the NQR spectrum near TN, in which a single 69Ga NQR line of 19.8 MHz in the paramagnetic state rapidly vanishes at 70 K and a double peak appears at 17.2 and 16.55 MHz between 63 and 70 K. This result is significantly different from the case of the usual antiferromagnetic ordering, and suggests a transient modification of the electric field gradient at the Ga sites. The Ga nuclear spin-lattice relaxation rate T1-1 in the paramagnetic state shows local character for spin fluctuations of 5f-electrons rather than 5f-itinerant behavior.

本文言語英語
ページ(範囲)89-91
ページ数3
ジャーナルJournal of Magnetism and Magnetic Materials
226-230
PART I
DOI
出版ステータス出版済み - 2001

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