Anisotropic magnetic properties in Åkermanite Sr2MSi2O7 (M=Co, Mn) crystals

Mitsuru Akaki, Tomoya Tadokoro, Hideki Kuwahara, Takumi Kihara, Masashi Tokunaga

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


We have investigated the magnetic and the dielectric properties of åkermanite Sr2CoSi2O7 and Sr2MnSi2O7 single crystals. Sr2CoSi2O7 shows a canted antiferromagnetism with a large magnetic anisotropy at temperatures below 7 K. By applying a magnetic field along the [110] direction, an electric polarization emerges along the c axis at temperatures below the magnetic transition temperature. In high magnetic fields, the saturation magnetization becomes enhanced only when the electric polarization appears. In contrast, the magnetization of Sr2MnSi2O7 is isotropic at all temperatures, and its magnetic-field-induced electric polarization is very small. These results suggest that the electronic configuration of the transition-metal ion is of crucial importance for the appearance of electric polarization.

Original languageEnglish
Pages (from-to)1812-1814
Number of pages3
JournalJournal of the Korean Physical Society
Issue number12
Publication statusPublished - Jul 2013
Externally publishedYes


  • Antiferomagnetism
  • Cobaltite
  • Magnetoelectric effects
  • Manganite
  • Multiferoics

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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