Magnetic phase diagram and antiferromagnetic resonance in CuGe1-ySiyO3

H. Nojiri, T. Hamamoto, Z. J. Wang, S. Mitsudo, M. Motokawa, S. Kimura, H. Ohta, A. Ogiwara, O. Fujita, J. Akimitsu

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37 Citations (Scopus)

Abstract

Magnetization and ESR measurements have been performed on Si-doped CuGe1-ySiyO3 (y = 0.01 and 0.02) single crystals. The y = 0.01 sample shows a spin-Peierls transition at TsP = 11 K as well as undoped material and additionally show an antiferromagnetic state below TN = 2.8 K. When an external field is applied to the c-axis below TN, two magnetization jumps due to the spin-flop and the transition from dimerized spin-Peierls phase to magnetic phase are observed at 0.98 T and 11.5 T, respectively, which means the coexistence of spin-Peierls and antiferromagnetic states. On the other hand, the y = 0.02 sample shows only an antiferromagnetic transition at TN = 4.8 K.

Original languageEnglish
Pages (from-to)1331-1338
Number of pages8
JournalJournal of Physics Condensed Matter
Volume9
Issue number6
DOIs
Publication statusPublished - Feb 10 1997
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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