Magnetoelectric behaviors in magnetic-field-induced phases of Pb(TiO)Cu4(PO4)4

Kenta Kimura, Shojiro Kimura, Tsuyoshi Kimura

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7 Citations (Scopus)


Pb(TiO)Cu4(PO4)4, a recently found tetragonal antiferromagnet consisting of inversion asymmetric Cu4O12 square cupolas, is known to exhibit various magnetoelectric (ME) responses in a broad range of magnetic fields applied along the crystallographic [110] axis. Here, we report distinct ME responses in Pb(TiO)Cu4(PO4)4 subjected to high magnetic fields up to 18 T applied along different high-symmetric axes, namely, the a axis (Ba) and the c axis (Bc). For Ba, it is observed that a finite electric polarization emerges in a field-induced phase, whose sign is independent of the electric field cooling procedure. For Bc, while no electric polarization appears, the dielectric constant shows a sharp peak divergent toward the transition from a paramagnetic to a field-induced phase. We discuss the origin of the observed ME responses in terms of the ME activity of cluster multipole moments.

Original languageEnglish
Article number093707
Journaljournal of the physical society of japan
Issue number9
Publication statusPublished - 2019

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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