Low-temperature dielectric anomalies in HoMn O3: The complex phase diagram

F. Yen, C. R. Dela Cruz, B. Lorenz, Y. Y. Sun, Y. Q. Wang, M. M. Gospodinov, C. W. Chu

研究成果: Article同行評審

65 引文 斯高帕斯(Scopus)

摘要

The dielectric constant of multiferroic hexagonal HoMn O3 exhibits an unprecedented diversity of anomalies at low temperatures (1.8 K<T<10 K) and under external magnetic fields related to magnetic phase transitions in the coupled system of Ho moments, Mn spins, and ferroelectric polarization. The derived phase diagram is far more complex than previously assumed including reentrant phases, phase transitions with distinct thermal and field hysteresis, as well as several multicritical points. Magnetoelastic interactions introduce lattice anomalies at the magnetic phase transitions. The reevaluation of the T-H phase diagram of HoMn O3 is demanded.

原文English
文章編號180407
期刊Physical Review B - Condensed Matter and Materials Physics
71
發行號18
DOIs
出版狀態Published - 2005

All Science Journal Classification (ASJC) codes

  • 電子、光磁材料
  • 凝聚態物理學

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