The 65h JSAP Spring Meeting, 2018

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22 Joint Session M » 22.1 Joint Session M "Phonon Engineering"

[20p-C304-1~15] 22.1 Joint Session M "Phonon Engineering"

Tue. Mar 20, 2018 12:45 PM - 5:00 PM C304 (52-304)

Takanobu Watanabe(Waseda Univ.), Takahiro Yamamoto(Tokyo Univ. of Sci.), Takao Mori(NIMS)

4:45 PM - 5:00 PM

[20p-C304-15] Thermal conductivity of a layered boride compound PrRh4.8B2 by using picosecond thermoreflectance method

〇Youhei Kakefuda1, Kunio Yubuta2, Toetsu Shishido2, Shigeru Okada3, Naoyuki Kawamoto1, Tetsuya Baba1, Takao Mori1 (1.NIMS, 2.Tohoku Univ., 3.Kokushikan Univ.)

Keywords:thermal conductivity, picosecond thermoreflectance

We have investigated thermal conductivity of a layered boride compound PrRh4.8B2 single crystal by using picosecond thermoreflectance (TD-TR) method. The thermal conductivity of PrRh4.8B2 is much lower than that of other borides. This indicates randomly located Rh vacancies depress phonon conduction effectively.