Pressure-induced metal-insulator transition in orthorhombic Nb12O29

T. Naka, T. Nakane, Y. Furukawa, Y. Takano, T. Adschiri, A. Matsushita

研究成果: Article査読

2 被引用数 (Scopus)

抄録

In orthorhombic Nb12O29 reported as the first example of a magnetically ordered ( TN = 12 K) system in niobium-based oxides, the metallic conduction even below TN suggests that Nb12O29 could be an itinerant antiferromagnet. In order to investigate the pressure effects on these novel magnetic and metallic behaviors, we have carried out resistivity measurements up to 2.5 GPa. The resistivity-temperature curves show metallic behavior below Pc ∼ 1 GPa. On the other hand, when pressure is applied over ∼1 GPa, the resistivity increases with decreasing temperature from 300 K. These results indicate metal-insulator (MI) transition at Pc ∼ 1 GPa. We will discuss the origin of the MI transition in Nb12O29 in terms of charge ordering and pressure-induced amorphization as have been suggested in other niobium oxides.

本文言語English
ページ(範囲)337-338
ページ数2
ジャーナルPhysica B: Condensed Matter
378-380
SPEC. ISS.
DOI
出版ステータスPublished - 2006 5 1

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • 電子工学および電気工学

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