Low-Temperature Structure of the Quarter-Filled Ladder Compound α'-NaV_2O_5

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概要

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• The low-temperature (LT) superstructure of α'-NaV_2O_5 was determined by synchrotron radiation X-ray diffraction. Below the phase transition temperature associated with atomic displacement and charge ordering at 34 K, we observed Bragg peak splittings, which provide evidence that the LT structure is monoclinic. It was determined that the LT structure is (a-b)×2b×4c with the space group A112,where a, b and c represent the high-temperature orthorhombic unit cell. The valence estimation of V ions according to the bond valence sum method shows that the V sites are clearly separated into two groups of V^<4+> and V^<5+> with a zigzag charge-ordering pattern. This LT structure is consistent with resonant X-ray and NMR measurements, and is in striking contrast to the LT structure previously reported, which includes V^<4.5+> sites.

• 社団法人日本物理学会の論文
• 2002-02-15

著者

• UEDA Yutaka

  Institute for Solid State Physics, University of Tokyo

• SAWA Hiroshi

  Photon Factory, Institute of Materials Structure Science

• 野田 幸男

  Institute Of Multidisciplinary Research For Advanced Materials Tohoku University

• 野田 幸男

  阪大基礎工

• Sawa H

  Institute Of Materials Structure Science Kek

• Sawa H

  Photon Factory Institute Of Materials Structure Science

• Suematsu H

  Spring-8

• Sawa Hiroshi

  Department Of Physics Aoyama-gakuin University

• Nakao H

  Photon Factory Institute Of Materials Structure Science Kek

• Nakao Hironori

  Department Of Physics Tohoku University

• Nakao Hironori

  Neutron Scattering Laboratory Institute For Solid State Physics The University Of Tokyo:(present)pho

• NODA Yukio

  Institute of Multidisciplinary Research for Advanced Materials, Tohoku University

• ISOBE Masahiko

  Institute for Solid State Physics, The University of Tokyo

• Ueda Yutaka

  Institute For Solid State Physics University Of Tokyo

• Murakami Youichi

  Photon Factory Institute Of Materials Structure Science High Energy Accelerator Research Organizatio

• SAWA Hiroshi

  Graduate School of Science and Technology, Chiba University

• NINOMIYA Emi

  Graduate School of Science and Technology, Chiba University

• OHAMA Tetsuo

  Faculty of Science, Chiba University

• NAKAO Hironori

  Photon Factory, Institute of Materials Structure Science, KEK

• OHWADA Kenji

  Institute of Multidisciplinary Research for Advanced Materials, Tohoku University

• FUJII Yasuhiko

  Institute for Solid State Physics, The University of Tokyo

• Nakao Hironori

  Neutron Scattering Laboratory Institute For Solid States Physics The University Of Tokyo

• Isobe M

  Materials Design And Characterization Laboratory Institute For Solid State Physics University Of Tok

• Fujii Y

  Institute For Solid State Physics The University Of Tokyo

• Ohwada Kenji

  Institute Of Multidisciplinary Research For Advanced Materials Tohoku University

• Nakao H

  Department Of Physics Tohoku University

• Isobe Masahiko

  Materials Design And Characterization Laboratory Institute For Solid State Physics The University Of

• Noda Yukio

  Institute Of Multidisciplinary Research For Advanced Materials Tohoku University

• Noda Yukio

  Faculty Of 1engineering Sciences Osaka University

• 藤井 陽一

  東大生産研

• NODA Yasuhisa

  Sendai National College of Technology

• Isobe Masahiko

  Institute For Materials Research Tohoku University

• Fujii Yoshikazu

  Department Of Engineering Science Kyoto University

• Sawa Hiroshi

  Photon Factory Institute Of Materials Structure Science

• Fujii Yasuhiko

  Institute For Solid State Phsics The University Of Tokyo

• Ohama T

  Faculty Of Science Chiba University

• Sawa Hiroshi

  Institute For Solid State Physics University Of Tokyo

• Isobe M

  Department Of Physics Nagoya University

• Ninomiya Emi

  Graduate School Of Science And Technology Chiba University

• Isobe Masahiko

  Issp. The University Of Tokyo

• Sato Hirohiko

  Department Of Chemistry Graduate School Of Science And Engineering Tokyo Institute Of Technology

• Ueda Yutaka

  Institute For Solid State Physic The University Of Tokyo

• Noda Yukio

  Tohoku Univ. Sendai

• NODA Yukio

  Institute of Multidisciplinary Research for Advanced Materials

• Isobe Masato

  National Institute for Materials Science (NIMS)

• NAKAO Hironori

  Photon Factory, Institute of Material Structure Science. High-Energy Accelerator Research Organization

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