[S4] S4.New Materials Science On Nanoscale Structures and Functions of Crystal Defect Cores, III(1)

[S4.8] Phonon measurement of Al₂O₃ grain boundaries using STEM-EELS

*Jingyuan YAN¹, Bin FENG¹, Naoya SHIBATA^1,3, Peng GAO², Yuichi IKUHARA^1,3 (1. Univ. of Tokyo, 2. Peking Univ., 3. JFCC)

Keywords:phonon measurement、Al₂O₃ grain boundary、STEM-EELS

The vibrational spectra of a series of Al2O3 GBs were measured and analyzed. Interficial modes and isolated vibrational modes related with the change of bond length were found in the GBs.