TY - JOUR
T1 - Low-temperature dielectric anomalies in HoMn O3
T2 - The complex phase diagram
AU - Yen, F.
AU - Dela Cruz, C. R.
AU - Lorenz, B.
AU - Sun, Y. Y.
AU - Wang, Y. Q.
AU - Gospodinov, M. M.
AU - Chu, C. W.
PY - 2005
Y1 - 2005
N2 - 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.
AB - 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.
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U2 - 10.1103/PhysRevB.71.180407
DO - 10.1103/PhysRevB.71.180407
M3 - Article
AN - SCOPUS:33644540537
SN - 1098-0121
VL - 71
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 18
M1 - 180407
ER -