TY - JOUR
T1 - Emergent phenomena in perovskite-type manganites
AU - Taguchi, Y.
AU - Sakai, H.
AU - Okuyama, D.
AU - Ishiwata, S.
AU - Fujioka, J.
AU - Fukuda, T.
AU - Hashizume, D.
AU - Kagawa, F.
AU - Takahashi, Y.
AU - Shimano, R.
AU - Tokunaga, Y.
AU - Kaneko, Y.
AU - Nakao, A.
AU - Nakao, H.
AU - Murakami, Y.
AU - Sugimoto, K.
AU - Takata, M.
AU - Yamauchi, K.
AU - Picozzi, S.
AU - Baron, A. Q.R.
AU - Arima, T.
AU - Tokura, Y.
N1 - Funding Information:
This work was in part supported by supported by KAKENHI 22740244 and “Funding Program for World-Leading Innovative R & D on Science and Technology (FIRST Program)” on “Quantum Science on Strong Correlation” from JSPS. Single crystal x-ray diffraction experiment was performed at BL02B1, SPring-8 with approval of JASRI (Proposal nos. 2009B1304 and 2010A1795).
PY - 2012/6/1
Y1 - 2012/6/1
N2 - Perovskite-type manganites exhibit various interesting phenomena arising from complex interplay among spin, charge, orbital, and lattice degrees of freedom. One such example is the keen competition between phases with different spin/charge/orbital orders. Keen competition between antiferromagnetic metal and orbital-ordered insulator is found in the slightly electron-doped regime near Mn 4 state which is stabilized by the high oxygen-pressure condition. Another one is the emergence of ferroelectricity either induced by the magnetic ordering or independently of the magnetic ordering. As the respective examples, perovskite-type YMnO 3 and Sr 1-xBa xMnO 3 are discussed. In the YMnO 3, the ferroelectric lattice distortion associated with the E-type spin order is observed for the first time. Displacement-type ferroelectricity with off-center magnetic ions is discovered for Sr 0.5Ba 0.5MnO 3, which shows both large polarization value and strong coupling between ferroelectricity and magnetism.
AB - Perovskite-type manganites exhibit various interesting phenomena arising from complex interplay among spin, charge, orbital, and lattice degrees of freedom. One such example is the keen competition between phases with different spin/charge/orbital orders. Keen competition between antiferromagnetic metal and orbital-ordered insulator is found in the slightly electron-doped regime near Mn 4 state which is stabilized by the high oxygen-pressure condition. Another one is the emergence of ferroelectricity either induced by the magnetic ordering or independently of the magnetic ordering. As the respective examples, perovskite-type YMnO 3 and Sr 1-xBa xMnO 3 are discussed. In the YMnO 3, the ferroelectric lattice distortion associated with the E-type spin order is observed for the first time. Displacement-type ferroelectricity with off-center magnetic ions is discovered for Sr 0.5Ba 0.5MnO 3, which shows both large polarization value and strong coupling between ferroelectricity and magnetism.
KW - High pressure synthesis
KW - Magnetic ferroelectrics
KW - Phase competition
UR - http://www.scopus.com/inward/record.url?scp=84859544708&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84859544708&partnerID=8YFLogxK
U2 - 10.1016/j.physb.2012.01.006
DO - 10.1016/j.physb.2012.01.006
M3 - Article
AN - SCOPUS:84859544708
VL - 407
SP - 1685
EP - 1688
JO - Physica B: Condensed Matter
JF - Physica B: Condensed Matter
SN - 0921-4526
IS - 11
ER -