準結晶研究の最近の展開　　４．準結晶のはたらき（準結晶の物性と応用）電子線を用いた準結晶の電子状態研究―準結晶の特徴は何か―

• 寺内 正己

  東北大学多元物質科学研究所

書誌事項

タイトル別名

• EELS Study of Electronic Structures of Quasicrystals and Approximant Crystals
• デンシセン オ モチイタ ジュンケッショウ ノ デンシ ジョウタイ ケンキュウ ジュンケッショウ ノ トクチョウ ワ ナニ カ
• ―準結晶の特徴は何か―

抄録

Al L-shell excitation spectra of Al-based quasicrystals of Al₇₅Cu₁₅V₁₀, Al₇₃Co₂₇ and Al₇₀Pd₂₀Mn₁₀ and related crystals were obtained from specified single crystalline areas by using a high energy-resolution electron energy-loss spectroscopy microscope. Intensity distributions of the spectra of not only the quasicrystalline materials but also related crystalline materials showed a presence of pseudogap at around the Fermi level. Onset energies of the spectra of the quasicrystals showed shifts to the higher energy side by 0.3 eV for Al₇₅Cu₁₅V₁₀ and Al₇₃Co₂₇ and 0.8 eV for Al₇₀Pd₂₀Mn 10 compared to that of aluminum. Those results show that a decrease of valence charge at Al sites is characteristic for Al-based quasicrystalline materials. It may be attributed to an increase of covalency in bonding nature of the quasicrystalline materials.

収録刊行物

• 日本結晶学会誌

  日本結晶学会誌 49 (1), 51-54, 2007

  日本結晶学会

詳細情報

• CRID: 1390282679064092416
• NII論文ID: 10018571755
• NII書誌ID: AN00188364
• DOI: 10.5940/jcrsj.49.51
• ISSN: 18845576
• ISSN: 03694585
• NDL書誌ID: 8717237
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I8717237
• 本文言語コード: ja
• データソース種別:
  • JaLC
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