Magnetization and magnetic phases in metallic and semiconducting HoxCa1-xMnO3
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- Schmid H.
- Institut für Kristallographie, Universität Tübingen
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- Ihringer J.
- Institut für Kristallographie, Universität Tübingen
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- Knorr K.
- Institut für Kristallographie, Universität Tübingen
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- Prandl W.
- Institut für Kristallographie, Universität Tübingen
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- Ritter H.
- Institut für Kristallographie, Universität Tübingen
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- Zeiske T.
- Institut für Kristallographie, Universität Tübingen
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We have measured the magnetization, susceptibility, specific resistance, X-ray and neutron diffraction data of the series HoxCal-xMnO3 (x≤0.5; step width Δx = 0.1 or less). The compounds analyzed have distorted perovskite structures: they are orthorhombic for 0≤x≤0.13, and have an orthorhombic to monoclinic phase transition for 0.13≤x≤0.33. Ho ions are paramagnetic for 4 K≤T≤300 K. Their magnetization and susceptibility at low temperatures are, however, reduced from what one expects for free ions. We calculate a crystal field correction MHo(T, H) and χHo(T). The resulting data for Mn show a reduced magnetic moment (x≥0.2) and a ferromagnetic phase at x = 0.1 ± 0.05 with ordering temperatures TN/TC ≈ 110 K. These results show that (HoxCa1-x)MnO3 belongs to the family of the giant magnetoresistance compounds (LaxCa1-x)MnO3 with, however, the ferromagnetic phase occuring at x = 0.1 as compared to x = 0.67 in the La-compound.
収録刊行物
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- 日本応用磁気学会誌
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日本応用磁気学会誌 23 (1_2), 525-527, 1999
公益社団法人 日本磁気学会
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詳細情報 詳細情報について
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- CRID
- 1390282680070472704
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- NII論文ID
- 110002810326
- 130004478356
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- NII書誌ID
- AN0031390X
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- ISSN
- 18804004
- 02850192
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- NDL書誌ID
- 4645681
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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
- Crossref
- NDL-Digital
- CiNii Articles
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