Control of improper ferroelectricity by chemical substitution and magnetic fields in multiferroic Mn1-xCuxWO4

K. C. Liang, Y. Q. Wang, Y. Y. Sun, B. Lorenz, C. W. Chu

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

Multiferroic materials, like MnWO4, exhibit improper ferroelectricity driven by an inversion symmetry breaking magnetic order and strong spin lattice interactions. We show that the three magnetic phases in MnWO4, including one ferroelectric phase, can be controlled by substitution of copper for manganese and by application of external magnetic fields. Upon increasing Cu substitution, the paraelectric low-temperature phase is replaced by the ferroelectric phase which becomes the ground state at higher doping levels. We conclude that a mixed (para-/ferroelectric) ground state exists below 10% of Cu substitution.

Original languageEnglish
Pages (from-to)43-51
Number of pages9
JournalFerroelectrics
Volume470
Issue number1
DOIs
Publication statusPublished - 2014 Oct 25

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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