Spontaneous polarization reversal in multiferroic Mn0.85Co0.15WO4 induced by an external magnetic field

Narayan Poudel, Bernd Lorenz, Kao Chen Liang, Ya Qi Wang, Yan Yi Sun, Feng Ye, Jaime A. Fernandez-Baca, Ching Wu Chu

研究成果: Article同行評審

摘要

The multiferroic properties of Mn0.85Co0.15WO4 are studied in magnetic fields oriented along the monoclinic c-axis. A spontaneous sign reversal of the ferroelectric polarization is observed upon decreasing temperature if cooled in a constant magnetic field. This unusual phenomenon is explained by the coexistence of different multiferroic phases with conical and spiral spin structures. These phases form domains which contribute to the electrical polarization in different temperature ranges. The sign reversal of the polarization is explained by an analysis of the contributions from the different domains to the net value of the polarization. It is concluded that the spiral and conical magnetic orders in neighboring domains are strongly coupled leading to the preservation of the spin chirality across the domain walls.

原文English
文章編號6971680
期刊IEEE Transactions on Magnetics
50
發行號11
DOIs
出版狀態Published - 2014 11月 1

All Science Journal Classification (ASJC) codes

  • 電子、光磁材料
  • 電氣與電子工程

指紋

深入研究「Spontaneous polarization reversal in multiferroic Mn0.85Co0.15WO4 induced by an external magnetic field」主題。共同形成了獨特的指紋。

引用此