Small Angle Neutron Scattering Study on Pr<sub>0.7</sub>Ca<sub>0.3</sub>MnO<sub>3</sub>–Evidence of Two-Phase Coexistence–
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- Yamada Yasusada
- Advanced Research Institute for Science and Engineering, Waseda University, Okubo, Shinjuku-ku, Tokyo 169-0072
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- Iwase Takeshi
- Advanced Research Institute for Science and Engineering, Waseda University, Okubo, Shinjuku-ku, Tokyo 169-0072
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- Watahiki Masaya
- Advanced Science Reseach Center, Japan Atomic Energy Reseach Institute, Tokai, Ibaraki 319-1195
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- Suzuki Jun-ichi
- Advanced Science Reseach Center, Japan Atomic Energy Reseach Institute, Tokai, Ibaraki 319-1195
書誌事項
- タイトル別名
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- Small Angle Neutron Scattering Study on Pr0.7Ca0.3MnO3. Evidence of Two-Phase Coexistence.
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説明
We observed small angle neutron scattering in Pr0.7Ca0.3MnO3 under two different magnetic fields, H = 0 and H = 1 T, focusing our attention on the lower angle region where the SANS spectra clearly show Porod-type Q-dependence. It is found that under ZFC (zero field cooling) condition, the system at low temperatures is in the state of `two-phase coexistence' where FM (ferromagnetic metallic) microcluster with the average radius of R ∼ 17 nm are embedded on AFI (antiferromagnetic insulater) background. Upon application of magnetic field, the ferromagnetic clusters start to coalesque to form macroscopic domains with the size of order of 2 μm without changing the total volume of FM region appreciablly. These conclusions seem to provide rather clear picture for CMR effect in Pr0.7Ca0.3MnO3 as viewed from macroscopic standpoints.
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 70 (6), 1593-1597, 2001
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
- 1390001204183488128
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- NII論文ID
- 210000103100
- 110001979044
- 130004537856
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- NII書誌ID
- AA00704814
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- BIBCODE
- 2001JPSJ...70.1593Y
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- ISSN
- 13474073
- 00319015
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- NDL書誌ID
- 5830124
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- 本文言語コード
- en
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