Comparative muon-spin rotation and relaxation study on the zigzag chain compounds NaMn2O4 and Li0.92Mn2O4
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- Sugiyama Jun
- Toyota Central Research and Development Laboratories Inc.
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- Ikedo Yutaka
- Toyota Central Research and Development Laboratories Inc.
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- Ofer Oren
- TRIUMF
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- Månsson Martin
- Laboratory for Neutron Scattering, ETH Zürich and Paul Scherrer Institut
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- Ansaldo Eduardo J.
- TRIUMF
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- Brewer Jess H.
- TRIUMF CIfAR and Department of Physics and Astronomy, University of British Columbia
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- Chow Kim H.
- Department of Physics, University of Alberta
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- Sakurai Hiroya
- National Institute for Materials Science
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- Takayama-Muromachi Eiji
- National Institute for Materials Science
書誌事項
- タイトル別名
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- Comparative Muon-Spin Rotation and Relaxation Study on the Zigzag Chain Compounds NaMn<SUB>2</SUB>O<SUB>4</SUB> and Li<SUB>0.92</SUB>Mn<SUB>2</SUB>O<SUB>4</SUB>
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The magnetic nature of the CaFe2O4-type NaMn2O4 and Li0.92Mn2O4, in which Mn ions form a zigzag chain along the b-axis, have been investigated by muon-spin rotation and relaxation (μ+SR) and susceptibility (χ) measurements in the temperature range between 1.9 and 250 K using polycrystalline samples. Weak transverse-field μ+SR measurements revealed the existence of a bulk antiferromagnetic (AF) transition for NaMn2O4 at TN=39 K and for Li0.92Mn2O4 at TN=44 K, although the χ(T) curve did not exhibit a clear anomaly around TN for either compound. Below TN, however, the zero-field μ+SR spectra in both samples did not show the oscillatory signal characteristic of long range magnetic order. Instead, a slowly relaxing tail is observed. Comparisons with the calculated internal magnetic field for the AF ordered phase suggests that the AF spin structure is disordered and/or rapidly fluctuating. In the paramagnetic region above 100 K, a nuclear magnetic field in Li0.92Mn2O4 was found to be dynamic, whereas that in NaMn2O4 was almost static. This implies the diffusive motion of Li+ ions in Li0.92Mn2O4 even below 250 K.
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 78 (8), 084715-084715, 2009
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
- 1390001204197172864
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- NII論文ID
- 130005437790
- 210000107942
- 40016692866
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- NII書誌ID
- AA00704814
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- ISSN
- 13474073
- 00319015
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- NDL書誌ID
- 10317430
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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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- 使用不可