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Magnetically induced quadrupole splitting and hyperfine field in NpFeGa

✍ Scribed by Yoshiya Homma; Saburo Nasu; Dai Aoki; Koji Kaneko; Naoto Metoki; Etsuji Yamamoto; Akio Nakamura; Shotaro Morimoto; Hiroshi Yasuoka; Yoshichika Ōnuki; Yoshinobu Shiokawa

Publisher
Elsevier Science
Year
2005
Tongue
English
Weight
197 KB
Volume
359-361
Category
Article
ISSN
0921-4526

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✦ Synopsis

57

Fe Mo¨ssbauer spectroscopy has been performed for the paramagnet UFeGa 5 and antiferromagnet NpFeGa 5 (T N ¼ 118 K) at the temperature between 4.2 and 298 K. Hyperfine magnetic field H hf at Fe nucleus of the NpFeGa 5 reaches 1.9 T at 10 K. Observation of the quadrupole splitting at Fe sites below the Ne´el temperature implies that the origin of H hf is not only due to the dipole field from magnetic Np atoms, but also from magnetic Fe atoms.

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