Structural Change on the Magnetic Field-Induced Insulator-to-Metal Transition in Distorted Perovskite Eu0.6Sr0.4MnO3
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- Nakamura Shin
- Department of Physics, Teikyo University Advanced Research Center of Science and Engineering, Waseda University
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- Shimomura Susumu
- Department of Physics, Keio University
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- Ikeda Naoshi
- Japan Synchrotron Radiation Research Institute
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- Nimori Shigeki
- National Institute for Materials Science
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- Takeuchi Takao
- National Institute for Materials Science
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- Itoh Kikuo
- National Institute for Materials Science
Bibliographic Information
- Other Title
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- Structural Change on the Magnetic Field-Induced Insulator-to-Metal Transition in Distorted Perovskite Eu<sub>0.6</sub>Sr<sub>0.4</sub>MnO<sub>3</sub>
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Abstract
Structural feature of Eu0.6Sr0.4MnO3 through the magnetic-field-induced insulator-to-metal (IM) transition has been investigated by X-ray powder diffraction in a magnetic field using synchrotron radiation. No superlattice reflections due to the charge and orbital ordering are detected in the insulator phase down to 20 K. Both of the insulator phase and the induced metal phase are proved to be in orthorhombic structure with Pnma space group, and thus a change of the crystal symmetry is not detected on the IM transition. However, the lattice constants abruptly increase and the reflection intensities abruptly change through the transition. These suggest a rotation of MnO6 octahedron in a manner to increase Mn–O–Mn angles. This structural change is consistent with a gain in electron transfer energy in the double exchange mechanism that stabilizes the metallic and ferromagnetic state.
Journal
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- Journal of the Physical Society of Japan
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Journal of the Physical Society of Japan 73 (11), 3059-3063, 2004
THE PHYSICAL SOCIETY OF JAPAN
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Details 詳細情報について
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- CRID
- 1390001204186390144
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- NII Article ID
- 210000105146
- 110001979256
- 130004538616
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- NII Book ID
- AA00704814
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- BIBCODE
- 2004JPSJ...73.3059N
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- ISSN
- 13474073
- 00319015
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- NDL BIB ID
- 7156979
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed