Magnetic order and spin dynamics in ferroelectric HoMnO3.
作者： O. P. Vajk , M. Kenzelmann , J. W. Lynn , S. B. Kim , S.-W. Cheong
DOI: 10.1103/PHYSREVLETT.94.087601
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摘要: Hexagonal HoMnO3 is a frustrated antiferromagnet (T(N)=72 K) ferroelectric (T(C)=875 in which these two order parameters are coupled. Our neutron measurements of the spin-wave dispersion for S=2 Mn3+ on layered triangular lattice well described by two-dimensional nearest-neighbor Heisenberg exchange J=2.44 meV, and an anisotropy D that 0.28 meV above spin-reorientation transition at 40 K 0.38 below. For H parallel c magnetic structures phase diagram have been determined, reveal additional transitions below 8 where ferroelectrically displaced Ho3+ ions ordered magnetically.
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Nicola A. Hill, Why Are There so Few Magnetic Ferroelectrics Journal of Physical Chemistry B. ,vol. 104, pp. 6694- 6709 ,(2000) , 10.1021/JP000114X
Hisashi Sugie, Nobuyuki Iwata, Kay Kohn, Magnetic Ordering of Rare Earth Ions and Magnetic-Electric Interaction of Hexagonal RMnO3 (R=Ho, Er, Yb or Lu) Journal of the Physical Society of Japan. ,vol. 71, pp. 1558- 1564 ,(2002) , 10.1143/JPSJ.71.1558
T. Kimura, T. Goto, H. Shintani, K. Ishizaka, T. Arima, Y. Tokura, Magnetic control of ferroelectric polarization Nature. ,vol. 426, pp. 55- 58 ,(2003) , 10.1038/NATURE02018
N. Hur, S. Park, P. A. Sharma, J. S. Ahn, S. Guha, S-W. Cheong, Electric polarization reversal and memory in a multiferroic material induced by magnetic fields. Nature. ,vol. 429, pp. 392- 395 ,(2004) , 10.1038/NATURE02572
B. Lorenz, A. P. Litvinchuk, M. M. Gospodinov, C. W. Chu, Field-induced reentrant novel phase and a ferroelectric-magnetic order coupling in HoMnO3. Physical Review Letters. ,vol. 92, pp. 087204- 087204 ,(2004) , 10.1103/PHYSREVLETT.92.087204
Thomas Lottermoser, Thomas Lonkai, Uwe Amann, Dietmar Hohlwein, Jörg Ihringer, Manfred Fiebig, Magnetic phase control by an electric field Nature. ,vol. 430, pp. 541- 544 ,(2004) , 10.1038/NATURE02728
Haimei Zheng, J Wang, SE Lofland, Z Ma, Ly Mohaddes-Ardabili, T Zhao, L Salamanca-Riba, SR Shinde, SB Ogale, Feiming Bai, D Viehland, Y Jia, DG Schlom, M Wuttig, A Roytburd, R Ramesh, Multiferroic BaTiO3-CoFe2O4 Nanostructures. Science. ,vol. 303, pp. 661- 663 ,(2004) , 10.1126/SCIENCE.1094207
W.C. Koehler, H.L. Yakel, E.O. Wollan, J.W. Cable, A note on the magnetic structures of rare earth manganese oxides Physics Letters. ,vol. 9, pp. 93- 95 ,(1964) , 10.1016/0031-9163(64)90089-7
A. Muñoz, J. A. Alonso, M. J. Martínez-Lope, M. T. Casáis, J. L. Martínez, M. T. Fernández-Díaz, Evolution of the Magnetic Structure of Hexagonal HoMnO3 from Neutron Powder Diffraction Data Chemistry of Materials. ,vol. 13, pp. 1497- 1505 ,(2001) , 10.1021/CM0012264
Th. Lonkai, D. Hohlwein, J. Ihringer, W. Prandl, The magnetic structures of YMnO 3−δ and HoMnO 3 Applied Physics A. ,vol. 74, pp. 843- 845 ,(2002) , 10.1007/S003390101158