Structural anomalies at the magnetic and ferroelectric transitions in R Mn2 O5 (R=Tb,Dy,Ho)

C. R. Dela Cruz, F. Yen, B. Lorenz, M. M. Gospodinov, C. W. Chu, W. Ratcliff, J. W. Lynn, S. Park, S. W. Cheong

研究成果: Article同行評審

94 引文 斯高帕斯(Scopus)

摘要

Strong anomalies of the thermal expansion coefficients at the magnetic and ferroelectric transitions have been detected in multiferroic R Mn2 O5. Their correlation with anomalies of the specific heat and the dielectric constant is discussed. The results provide evidence for the magnetic origin of the ferroelectricity mediated by strong spin-lattice coupling in the compounds. Neutron scattering data for Ho Mn2 O5 indicate a spin reorientation at the two low-temperature phase transitions.

原文English
文章編號100406
期刊Physical Review B - Condensed Matter and Materials Physics
73
發行號10
DOIs
出版狀態Published - 2006

All Science Journal Classification (ASJC) codes

  • 電子、光磁材料
  • 凝聚態物理學

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