[13a-N405-1~5] 16.2 Energy Harvesting

[13a-N405-5] Reversible magnon control in magnon thermal conductive La₅Ca₉Cu₂₄O₄₁ single crystal using an ionic liquid

〇(M1)Chitose Ishikawa¹, Nobuaki Terakado^1,2, Yoshihiro Takahashi¹, Takumi Fujiwara¹ (1.Tohoku Univ., 2.JST-PRESTO)

Keywords:thermal management materials

We are developing novel thermal management materials for electrical control of heat flow using La₅Ca₉Cu₂₄O₄₁ (LCCO), which exhibits anisotropic high thermal conductivity derived from magnons. In our previous study, we investigated the voltage response of randomly or (0k0)-oriented LCCO polycrystalline films coated with ionic liquids, and found that the magnon response strongly depends on the orientation of the films. In this study, we investigate the voltage response of LCCO single crystal ab, bc, and ca surfaces coated with ionic liquids to clarify the origin of the magnon response.