書誌事項
- タイトル別名
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- Two-dimensional Mapping of Superconducting Materials by Valence Electron Parameters
- カデンシ パラメーター ニ ヨル チョウデンドウ ブッシツ ノ 2ジゲン マッピング
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Two dimensional mappings on superconductive elements A and AB compounds are constructed by using the valence electron parameters (the difference between pseudopotential radii (r (s), r (p) and r (d)) of s and p electrons or of s and d electrons, Δ(sp) or Δ(sd), and the orbital electronegativity of s electron, χ(s)=(Z/r (s))1/2, where Z is valence) as the coordinates. From the relation of band gap against χ(s), the change of metal to semiconductor in sp-bonded elemental substances occurs at the threshold value of (Z/r (s))1/2=2.098. It is found that the boundary for superconductivity in sp-bonded elemental substances and AB compounds appears around (Z/r (s))1/2≈2.3. On the other hand, superconductivity appears in the region with higher (Z/r (s))1/2 value in the transition metals and AB compounds containing transition metals. Lower limit in the abscissa scale is observed around (Z/r (s))1/2=1.3, suggesting the limitation due to electron density in metallic substances and AB compounds. Non-superconducting late 3d transition elements are clearly divided by a polynomial curve. Non-superconducting sp-bonded AB compounds are well separately placed in the region with higher (Z/r (s))1/2 value than 2.3 and lower Δ(sp) value than 0.150.
収録刊行物
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- 粉体および粉末冶金
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粉体および粉末冶金 58 (7), 417-422, 2011
一般社団法人 粉体粉末冶金協会
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詳細情報 詳細情報について
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- CRID
- 1390282681286828416
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- NII論文ID
- 10029437851
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- NII書誌ID
- AN00222724
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- COI
- 1:CAS:528:DC%2BC3MXhtVGnurzN
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- ISSN
- 18809014
- 05328799
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- NDL書誌ID
- 11189024
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
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- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可
