Effect of Structural Parameters on Superconductivity in Fluorine-Free LnFeAsO_<1-y> (Ln=La, Nd)(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
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概要
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The crystal structure of LnFeAsO_<1-y> (Ln=La, Nd) has been studied by the powder neutron diffraction technique. The superconducting phase diagram of NdFeAsO_<1-y> is established as a function of oxygen content which is determined by Rietveld refinement. The small As-Fe bond length suggests that As and Fe atoms are connected covalently. FeAs_4-tetrahedrons transform toward a regular shape with increasing oxygen deficiency. Superconducting transition temperatures seem to attain maximum values for regular FeAs_4-tetrahedrons.
- 社団法人日本物理学会の論文
- 2008-08-15
著者
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Braden Markus
Univ. Koeln Koeln Deu
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Braden Markus
Ii. Physikalisches Institut Universitat Zu Koln
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EISAKI Hiroshi
National Institute of Advanced Industrial Science and Technology
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KITO Hijiri
National Institute of Advanced Industrial Science and Technology
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IYO Akira
National Institute of Advanced Industrial Science and Technology
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LEE Chul-Ho
National Institute of Advanced Industrial Science and Technology
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FERNANDEZ-DIAZ Maria
Institut Laue-Langevin
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ITO Toshimitsu
National Institute of Advanced Industrial Science and Technology
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KIHOU Kunihiro
National Institute of Advanced Industrial Science and Technology
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MATSUHATA Hirofumi
National Institute of Advanced Industrial Science and Technology
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YAMADA Kazuyoshi
Institute for Materials Research, Tohoku University
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Kito Hijiri
Jst Trip
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Kito Hijiri
National Inst. Advanced Industrial Sci. And Technol. (aist) Ibaraki Jpn
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Kito Hijiri
Nanoelectronics Research Institute (neri) National Institute Of Advanced Industrial Science And Tech
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Iyo Akira
National Inst. Advanced Industrial Sci. And Technol. (aist) Ibaraki Jpn
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Iyo Akira
Nanoelectronics Research Institute (neri) National Institute Of Advanced Industrial Science And Tech
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Eisaki Hiroshi
Nanoelectronics Research Institute National Institute Of Advanced Industrial Science And Technology
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Iyo Akira
National Institute Of Advanced Industrial Science And Technology (aist)
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Kito Hijiri
National Institute Of Advanced Industrial Science And Technology (aist)
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Ito Toshimitsu
National Institute Of Advanced Industrial Science And Technology (aist)
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Ito Toshimitsu
National Institute For Advanced Industrial Science And Technology
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Iyo A
National Institute Of Advanced Industrial Science And Technology (aist)
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Yamada Kazuyoshi
Wpi Tohoku University
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Yamada Kazuyoshi
Institute For Materials Research Tohoku University
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Yamada Kazuyoshi
Wpi Advanced Institute For Materials Research Tohoku University
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Yamada Kazuyoshi
Institute For Chemical Research Kyoto University
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Yamada Kazuyoshi
Tohoku Univ. Sendai
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Kitaoka Yoshio
WPI-AIMR, Tohoku University
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