Correlation between the local stress and the grain misorientation in the polycrystalline Al2O3 measured by near-field luminescence spectroscopy

Toru Tomimatsu, Ryo Takigawa

研究成果: ジャーナルへの寄稿記事

1 引用 (Scopus)

抄録

Owing to its high spatial resolution, near-field spectroscopy is a useful method for sensing the stress in a narrow region of submicron order. Here, on the basis of the highly resolved images obtained by near-field luminescence spectroscopy, we propose a statistical method of analyzing grain anisotropy-induced stress in polycrystalline Al2O3. We focus on two characteristics of a spectra: the intensity ratio and peak shift of luminescence of two lines (R1 and R2) from Al2O3 to discuss crystal orientation and stress, respectively. By incorporating the concept of the crystal misorientation parameter using intensity ratio, an apparent correlation between the magnitude of stress and the misorientation is found. This correlation analysis provides an important insight for the investigation of local thermal stress in Al2O3.

元の言語英語
記事番号06HF01
ジャーナルJapanese Journal of Applied Physics
57
発行部数6
DOI
出版物ステータス出版済み - 6 1 2018

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misalignment
Luminescence
near fields
Spectroscopy
luminescence
spectroscopy
thermal stresses
Thermal stress
Crystal orientation
crystals
Statistical methods
Anisotropy
spatial resolution
Crystals
anisotropy
shift
high resolution

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

これを引用

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