title: Influence of magnetic domain walls and magnetic field on the thermal conductivity of magnetic nanowires.
abstract: We investigated the influence of magnetic domain walls and magnetic fields on the thermal conductivity of suspended magnetic nanowires. The thermal conductivity of the nanowires was obtained using steady-state Joule heating to measure the change in resistance caused by spontaneous heating. The results showed that the thermal conductivity coefficients of straight and wavy magnetic nanowires decreased with an increase in the magnetic domain wall number, implying that the scattering between magnons and domain walls hindered the heat transport process. In addition, we proved that the magnetic field considerably reduced the thermal conductivity of a magnetic nanowire. The influence of magnetic domain walls and magnetic fields on the thermal conductivity of polycrystalline magnetic nanowires can be attributed to the scattering of long-wavelength spin waves mediated by intergrain exchange coupling.
authors.affiliation: †Institute of NanoEngineering and MicroSystems and ‡Department of Power Mechanical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan.
authors.forename: Hao-Ting
authors.initials: HT
authors.lastname: Huang
authors.affiliation: †Institute of NanoEngineering and MicroSystems and ‡Department of Power Mechanical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan.
authors.forename: Mei-Feng
authors.initials: MF
authors.lastname: Lai
authors.affiliation: †Institute of NanoEngineering and MicroSystems and ‡Department of Power Mechanical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan.
authors.forename: Yun-Fang
authors.initials: YF
authors.lastname: Hou
authors.affiliation: †Institute of NanoEngineering and MicroSystems and ‡Department of Power Mechanical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan.
authors.forename: Zung-Hang
authors.initials: ZH
authors.lastname: Wei
keywords: Thermal conductivity; magnetic domain wall; magnetic nanowire; magnon