Single crystal growth and fermi surface properties of an antiferromagnet UPdGa5

Shugo Ikeda, Tatsuma D. Matsuda, Yoshinori Haga, Etsuji Yamamoto, Miho Nakashima, Shingo Kirita, Tatsuo C. Kobayashi, Masato Hedo, Yoshiya Uwatoko, Hiroshi Yamagami, Hiroaki Shishido, Taiki Ueda, Rikio Settai, Yoshichika Onuki

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10 Citations (Scopus)


We have succeeded in growing a high-quality single crystal of an antiferromagnet UPdGa5 by the Ga-flux method with the off-stoichiometric composition of U : Pd : Ga = 1 : 2 : 7.3. The Néel temperature TN = 30.5 K is found to increase with increasing the residual resistivity ratio (RRR) and becomes constant for a high-quality single crystal sample whose RRR is larger than 50. The electronic state has been investigated by the de Haas-van Alphen experiment, indicating the similar cylindrical Fermi surfaces as in an antiferromagnet UPtGa5. We have also studied the pressure effect by measuring the electrical resistivity. The Néel temperature decreases with increasing pressure and becomes zero at 3.1 GPa. The antiferromagnetic state is changed into the paramagnetic state above 3.1 GPa.

Original languageEnglish
Pages (from-to)2277-2281
Number of pages5
Journaljournal of the physical society of japan
Issue number8
Publication statusPublished - Aug 1 2005


  • Antiferromagnet
  • UPdGa
  • dHvA

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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