Lattice modulation in YMn2O5 and TbMn 2O5 studied by using synchrotron radiation x-rays

Y. Noda, H. Kimura, Y. Kamada, Y. Ishikawa, S. Kobayashi, Y. Wakabayashi, H. Sawa, N. Ikeda, K. Kohn

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Abstract

RMn2O5 (R = Y and rare earth) shows successive magnetic and ferroelectric phase transitions at about 45 K, 40 K, 39 K, 20 K and 10 K and is called a multiferroic compound. We have investigated the lattice modulation vectors (qL) of YMn2O5 and TbMn 2O5 by using single crystal Synchrotron Radiation X-ray diffraction and compared them with the magnetic propagation vectors (q M) studied by neutron diffraction. The relation of the propagation vectors between magnetic materials and dielectrics is found to be qL, = 2qM. A preliminary structure analysis of the atomic displacement pattern in the commensurate ferroelectric phase of TbMn2O5 is discussed.

Original languageEnglish
Pages (from-to)828-831
Number of pages4
JournalJournal of the Korean Physical Society
Volume51
Issue number2 PART I
Publication statusPublished - Aug 1 2007

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Keywords

  • Multiferroic
  • RMnO
  • SR X-ray diffraction

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Noda, Y., Kimura, H., Kamada, Y., Ishikawa, Y., Kobayashi, S., Wakabayashi, Y., Sawa, H., Ikeda, N., & Kohn, K. (2007). Lattice modulation in YMn2O5 and TbMn 2O5 studied by using synchrotron radiation x-rays. Journal of the Korean Physical Society, 51(2 PART I), 828-831.