Highly nonlinear magnetoelectric effect in buckled-honeycomb antiferromagnetic Co4Ta2O9

Nara Lee, Dong Gun Oh, Sungkyun Choi, Jae Young Moon, Jong Hyuk Kim, Hyun Jun Shin, Kwanghyo Son, Jürgen Nuss, Valery Kiryukhin, Young Jai Choi

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


Strongly correlated materials with multiple order parameters provide unique insights into the fundamental interactions in condensed matter systems and present opportunities for innovative technological applications. A class of antiferromagnetic honeycomb lattices compounds, A4B2O9 (A = Co, Fe, Mn; B = Nb, Ta), have been explored owing to the occurrence of linear magnetoelectricity. From our investigation of magnetoelectricity on single crystalline Co4Ta2O9, we discovered strongly nonlinear and antisymmetric magnetoelectric behavior above the spin-flop transition for magnetic fields applied along two orthogonal in-plane directions. This observation suggests that two types of inequivalent Co2+ sublattices generate magnetic-field-dependent ferroelectric polarization with opposite signs. The results motivate fundamental and applied research on the intriguing magnetoelectric characteristics of these buckled-honeycomb lattice materials.

Original languageEnglish (US)
Article number12362
JournalScientific reports
Issue number1
StatePublished - Dec 1 2020

All Science Journal Classification (ASJC) codes

  • General


Dive into the research topics of 'Highly nonlinear magnetoelectric effect in buckled-honeycomb antiferromagnetic Co4Ta2O9'. Together they form a unique fingerprint.

Cite this