ランタン膜の水素化・脱水素化に伴う構造変化 The Structural Change of Lanthanum Thin Films by Hydrogenation and Dehydrogenation

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著者

    • 前田 幹雄 MAEDA Mikio
    • 岩手大学大学院工学研究科物質工学専攻 Department of Materials Science, Graduate School of Engineering, Iwate University
    • 山口 明 YAMAGUCHI Akira
    • 岩手大学工学部材料物性工学科 Department of Materials Science and Engineering, Faculty of Engineering, Iwate University

抄録

Structural change in hydrogenation and dehydrogenation processes of La films was investigated. La/Pd films were produced at substrate temperatures of 300 K-573 K on a SiO<SUB>2</SUB> substrate using magnetron-sputtering equipment. La/Pd films were hydrogenated under a pressure of 1.0×10<SUP>5</SUP> Pa in a vacuum chamber. Phase transition from La to LaH<SUB><i>x</i></SUB> (2<<i>x</i><3) by hydrogenation resulted in a 6- to 10-fold increase of resistivity. Hydrogenation and dehydrogenation readily occurred near room temperature for La/Pd films. The ratio of the growth direction of [0001] to [1010] changed with substrate temperature in the as sputtered La films. When the growth direction of La film was [1010], the rate of hydrogenation became slow in comparison with that of [0001]. The direction of the La films changed to the [111] direction of LaH<SUB><i>x</i></SUB> after hydrogenation, though the initial directions of La films were [0001] and [1010]. The processes of hydrogenation and dehydrogenation may affect oxygen which remains inside the La films. In dehydrogenation at room temperature, LaH<SUB><i>x</i></SUB> (2<<i>x</i><3) was transformed to LaH<SUB>2</SUB>, but not to La.

収録刊行物

  • 日本金屬學會誌 = Journal of the Japan Institute of Metals

    日本金屬學會誌 = Journal of the Japan Institute of Metals 68(9), 776-780, 2004-09-20

    公益社団法人 日本金属学会

参考文献:  10件中 1-10件 を表示

  • <no title>

    NAGENGAST D. G.

    Appl. Phys. Lett. 1724(12), 75, 1999

    被引用文献1件

  • <no title>

    ROSSI A.

    Nature 174, 133, 1934

    被引用文献1件

  • <no title>

    TITCOMB C. G.

    J. Phys. C. Solid State Phys. 2409-2416, 7, 1978

    被引用文献1件

  • <no title>

    LIBOWITZ G. G.

    Handbook on the Physics and Chemistry of Rare Earth 299, 4, 1979

    被引用文献1件

  • <no title>

    MULLER H.

    Handbook on the Physics and Chemistry of Rare Earth 87, 59, 1982

    被引用文献1件

  • <no title>

    HOLLEY C. E.

    J. Phys. Chem. 59, 1226, 1955

    被引用文献1件

  • <no title>

    GUPTA M.

    The Electronic Structure of Complex Systems 243, 1983

    被引用文献1件

  • Yttrium and lanthanum hydride films with switchable optical properties

    HUIBERTS J. N.

    Nature 380, 231-234, 1996

    DOI 被引用文献30件

  • <no title>

    HUIBERTS J. N.

    J. Alloys Compd. 239, 158, 1996

    DOI 被引用文献4件

  • <no title>

    GRIESSEN R.

    J. Alloys Compounds 253, 44-50, 1997

    被引用文献6件

各種コード

  • NII論文ID(NAID)
    10013580629
  • NII書誌ID(NCID)
    AN00062446
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    00214876
  • NDL 記事登録ID
    7103944
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-314
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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