Pressure-induced decoupling of rare-earth moments and Mn spins in multiferroic GdMn2 O5

N. Poudel, M. Gooch, B. Lorenz, C. W. Chu, J. W. Kim, S. W. Cheong

研究成果: Article同行評審

12 引文 斯高帕斯(Scopus)

摘要

The effects of pressure on the ferroelectric properties of multiferroic GdMn2O5 is studied up to 18.2 kbar. Above a critical pressure of pc≈10 kbar, the ferroelectric transition splits into two, with the first transition shifted to higher temperature. The pressure-temperature phase diagram is derived. The results indicate a pressure-induced decoupling of the Gd moments from the Mn spin system. The conclusion is supported by thermal expansion data which show a large increase of the c axis at the ambient-pressure ferroelectric transition. The pressure-induced contraction of the c lattice parameter is considered to be the origin of the decoupling of both magnetic subsystems above pc.

原文English
文章編號144430
期刊Physical Review B - Condensed Matter and Materials Physics
92
發行號14
DOIs
出版狀態Published - 2015 十月 29

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

指紋 深入研究「Pressure-induced decoupling of rare-earth moments and Mn spins in multiferroic GdMn2 O5」主題。共同形成了獨特的指紋。

引用此