Crystal structure and magnetic properties of hexagonal RMnO3 (R = Y, Lu, and Sc) and the effect of doping

T. Katsufuji; M. Masaki; A. Machida; M. Moritomo; K. Kato; E. Nishibori; M. Takata; M. Sakata; K. Ohoyama; K. Kitazawa; H. Takagi

Crystal structure and magnetic properties of hexagonal RMnO₃ (R = Y, Lu, and Sc) and the effect of doping

T. Katsufuji^*, M. Masaki, A. Machida, M. Moritomo, K. Kato, E. Nishibori, M. Takata, M. Sakata, K. Ohoyama, K. Kitazawa, H. Takagi

^*Corresponding author for this work

School of Advanced Science and Engineering

Research output: Contribution to journal › Article › peer-review

249 Citations (Scopus)

Abstract

A ferroelectricity-magnetism-coexisting system, hexagonal RMnO₃ (R = Y, Lu, and Sc), has been investigated by synchrotron x-ray and neutron powder diffraction measurements. It is found from x-ray diffraction measurements that the ferroelectric polarization originates from the tilting of MnO₅ polyhedra and the buckling of R layers, which persists up to 1000 K. Neutron diffraction measurements have revealed the reduction of ordered moments from the expected value, as well as strong magnetic diffuse scattering existing far above T_N, both of which are caused by geometrical frustration of the triangular lattice of Mn ions. We have also investigated the effects of Zr doping into the R site and have found that Zr doping drastically suppresses both ferroelectric distortion and magnetic ordering.

Original language	English
Article number	134434
Pages (from-to)	1344341-1344348
Number of pages	8
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	66
Issue number	13
Publication status	Published - 2002 Oct 1

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Cite this

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title = "Crystal structure and magnetic properties of hexagonal RMnO3 (R = Y, Lu, and Sc) and the effect of doping",

abstract = "A ferroelectricity-magnetism-coexisting system, hexagonal RMnO3 (R = Y, Lu, and Sc), has been investigated by synchrotron x-ray and neutron powder diffraction measurements. It is found from x-ray diffraction measurements that the ferroelectric polarization originates from the tilting of MnO5 polyhedra and the buckling of R layers, which persists up to 1000 K. Neutron diffraction measurements have revealed the reduction of ordered moments from the expected value, as well as strong magnetic diffuse scattering existing far above TN, both of which are caused by geometrical frustration of the triangular lattice of Mn ions. We have also investigated the effects of Zr doping into the R site and have found that Zr doping drastically suppresses both ferroelectric distortion and magnetic ordering.",

author = "T. Katsufuji and M. Masaki and A. Machida and M. Moritomo and K. Kato and E. Nishibori and M. Takata and M. Sakata and K. Ohoyama and K. Kitazawa and H. Takagi",

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T1 - Crystal structure and magnetic properties of hexagonal RMnO3 (R = Y, Lu, and Sc) and the effect of doping

AU - Katsufuji, T.

AU - Masaki, M.

AU - Machida, A.

AU - Moritomo, M.

AU - Kato, K.

AU - Nishibori, E.

AU - Takata, M.

AU - Sakata, M.

AU - Ohoyama, K.

AU - Kitazawa, K.

AU - Takagi, H.

PY - 2002/10/1

Y1 - 2002/10/1

N2 - A ferroelectricity-magnetism-coexisting system, hexagonal RMnO3 (R = Y, Lu, and Sc), has been investigated by synchrotron x-ray and neutron powder diffraction measurements. It is found from x-ray diffraction measurements that the ferroelectric polarization originates from the tilting of MnO5 polyhedra and the buckling of R layers, which persists up to 1000 K. Neutron diffraction measurements have revealed the reduction of ordered moments from the expected value, as well as strong magnetic diffuse scattering existing far above TN, both of which are caused by geometrical frustration of the triangular lattice of Mn ions. We have also investigated the effects of Zr doping into the R site and have found that Zr doping drastically suppresses both ferroelectric distortion and magnetic ordering.

AB - A ferroelectricity-magnetism-coexisting system, hexagonal RMnO3 (R = Y, Lu, and Sc), has been investigated by synchrotron x-ray and neutron powder diffraction measurements. It is found from x-ray diffraction measurements that the ferroelectric polarization originates from the tilting of MnO5 polyhedra and the buckling of R layers, which persists up to 1000 K. Neutron diffraction measurements have revealed the reduction of ordered moments from the expected value, as well as strong magnetic diffuse scattering existing far above TN, both of which are caused by geometrical frustration of the triangular lattice of Mn ions. We have also investigated the effects of Zr doping into the R site and have found that Zr doping drastically suppresses both ferroelectric distortion and magnetic ordering.

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Crystal structure and magnetic properties of hexagonal RMnO₃ (R = Y, Lu, and Sc) and the effect of doping

Abstract

ASJC Scopus subject areas

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