Thermal conductivity of layered boride crystals: Anisotropy of AlB2 and effect of building defects on TmAlB4

X. J. Wang; Takao Mori; David Cahill; Kunio Yubuta; Toetsu Shishido; Shigeru Okada

Presentation information

Oral presentation

Joint Session M "Phonon Engineering" » Joint Session M "Phonon Engineering"

[14p-B12-1~18] 22.1 Joint Session M "Phonon Engineering"

Wed. Sep 14, 2016 1:30 PM - 6:15 PM B12 (Exhibition Hall)

Tsunehiro Takeuchi(Toyota Tech. Inst.), Takanobu Watanabe(Waseda Univ.), Takahiro Yamamoto(Tokyo Univ. of Sci.), Takao Mori(NIMS)

3:30 PM - 3:45 PM

[14p-B12-9] Thermal conductivity of layered boride crystals: Anisotropy of AlB2 and effect of building defects on TmAlB4

X. J. Wang¹, 〇Takao Mori^2,3, David Cahill¹, Kunio Yubuta⁴, Toetsu Shishido⁴, Shigeru Okada⁵ (1.Univ. Illinois, 2.NIMS, 3.Univ. Tsukuba, 4.Tohoku Univ., 5.Kokushikan Univ.)

Keywords:thermal conductivity, layered materials

We report on thermal conductivity measurements on the microscale on single crystals of layered borides. Large effect of building defects on the thermal conductivities of needle-like α-TmAlB4 crystals was discovered.
Measurement on micro-thin AlB2 crystals revealed that the single crystals are thermally anisotropic with the c-axis thermal conductivity nearly twice the thermal conductivity of the a-b plane.