材料科学
热导率
钙钛矿(结构)
质子化
离子键合
化学物理
凝聚态物理
金属
纳米技术
无机化学
化学
离子
结晶学
复合材料
冶金
物理
有机化学
作者
Hao‐Bo Li,Zhiping Bian,Mitsuki Yoshimura,Kohei Shimoyama,Chengchao Zhong,Keiji Shimoda,Azusa N. Hattori,Kunihiko Yamauchi,Ikutaro Hamada,Hiromichi Ohta,Hidekazu Tanaka
摘要
The perovskite oxides ReNiO3 (Re = rare-earth elements) are promising functional materials due to their strongly correlated electrons. Except for the well-known intrinsic metal-insulating transition in these materials, recent progresses have proved that protonation of ReNiO3 can bring about interesting Mott transition in this series. To date, in these protonated species (H-ReNiO3), huge resistance switching, fast ionic diffusion, and their applications as an iontronic transistor, memristor, and fuel cell are reported. In this work, the thermal conductivities of H-ReNiO3 (Re = La, Nd, Sm, and Eu) epitaxial thin films are investigated. The protonation-induced Mott transition can effectively modulate the electronic thermal conductivity while the lattice thermal conductance is less affected. Hence, at room temperature, the metallic LaNiO3 and NdNiO3 exhibit reversible wide thermal conductivity modulation, in ranges of 2.6–12.0 and 1.6–8.0 W m−1 K−1, respectively. These values are much larger than other thermal regulation materials based on transition metal oxides. Thus, our work reveals the great potential of ReNiO3 being applied as a thermal-regulating material. The fast ionic diffusion in H-ReNiO3 also guarantees that a fast response and wide-range thermal transistor can be realized by H-LaNiO3 and H-NdNiO3 in the future.
科研通智能强力驱动
Strongly Powered by AbleSci AI