J0402-1-5 ピコ秒レーザー超音波法を用いた薄膜の極低温における弾性定数計測法の開発([J0402-1]超音波計測・解析法の新展開(1))

• 谷垣 健一

  阪大

• 楠本 達也

  阪大

• 荻 博次

  阪大

• 中村 暢伴

  阪大

• 平尾 雅彦

  阪大

書誌事項

タイトル別名

• J0402-1-5 Development of Elastic-Constant Measurement in THin Films at Low Temperatures Using Picosecond Laser Ultrasound Spectroscopy

抄録

In this study, we developed elastic-constant measurement in thin films at low temperatures using picosecond laser ultrasound spectroscopy. Specimens are cooled with liquid He through a heat exchanger in a cryostat, and an ultrahigh-frequency acoustic pulse is generated using a femtosecond light pulse, which propagates in the film-thickness directioa Acoustic-phonon resonances are observed by the changes in reflectivity of the time-delayed probe light and give the longitudinal-wave out-of-plane elastic constant We observed the temperature dependence of elastic constant C^<111> of a Pd thin film. This method is useful for studying the elastic properties of metallic thin films at cryogenic temperatures.

収録刊行物

• 年次大会講演論文集

  年次大会講演論文集 2010.6 (0), 393-394, 2010

  一般社団法人 日本機械学会

キーワード

• Elastic constants
• Low temperature
• PSLU
• Palladium

詳細情報

• CRID: 1390282681044211712
• NII論文ID: 110008700705
• DOI: 10.1299/jsmemecjo.2010.6.0_393
• ISSN: 24331325
• Web Site: https://www.jstage.jst.go.jp/article/jsmemecjo/2010.6/0/2010.6_393/_pdf
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可