New Stacking Variations of the Charge and Orbital Ordering in the Metal-Ordered Manganite YBaMn<sub>2</sub>O<sub>6</sub>
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- Kageyama H.
- Material Design and Characterization Laboratory, Institute for Solid State Physics, University of Tokyo
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- Nakajima T.
- Material Design and Characterization Laboratory, Institute for Solid State Physics, University of Tokyo
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- Ichihara M.
- Material Design and Characterization Laboratory, Institute for Solid State Physics, University of Tokyo
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- Ueda Y.
- Material Design and Characterization Laboratory, Institute for Solid State Physics, University of Tokyo
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- Yoshizawa H.
- Neutron Scattering Laboratory, Institute for Solid State Physics, The University of Tokyo
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- Ohoyama K.
- Institute for Materials Research, Tohoku University
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- タイトル別名
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- New Stacking Variations of the Charge and Orbital Ordering in the Metal-Ordered Manganite YBaMn2O6.
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We performed transmission electron microscopy (TEM) and powder neutron diffraction experiments on an A-site ordered manganese perovskite YBaMn2O6 which undergoes unusual and multiple phase transitions. In the paramagnetic insulating phase, the so-called CE type of charge and orbital ordering was observed in the monoclinic a–b plane, which has been frequently observed for the ordinary solid solution of A1−x3+Ax′2+MnO3 around x=0.5. TEM revealed, however, a fourfold periodicity along the c axis, suggesting a new stacking pattern, in which planes of the CE type are built up according to the sequence [ααββ…]. Interestingly, when the system entered the antiferromagnetic state below 195 K, this stacking pattern changed into [αααα…] or [αβαβ…], suggesting a close interplay between spins and orbitals. The obtained stacking patterns were strongly correlated to the inherent structural alternation, i.e., the Y/Ba order along the c axis.
収録刊行物
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- Journal of the Physical Society of Japan
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Journal of the Physical Society of Japan 72 (2), 241-244, 2003
一般社団法人 日本物理学会
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詳細情報 詳細情報について
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- CRID
- 1390001204184306560
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- NII論文ID
- 210000104463
- 110001954397
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- NII書誌ID
- AA00704814
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- BIBCODE
- 2003JPSJ...72..241K
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- ISSN
- 13474073
- 00319015
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- NDL書誌ID
- 6444689
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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