Thermally tunable terahertz magnetic responses of TbFeO3ceramic
Thermally tunable terahertz magnetic responses of TbFeO3ceramic
复制标题
TbFeO3 陶瓷的热可调太赫兹磁响应
DOI：
10.1016/j.ceramint.2018.07.088
复制
发表时间：
2018
影响因子：
5.2
通讯作者：
Zhou Ji
中科院分区：
文献类型：
--
作者：
Zeng Xinxi;Wu Lingling;Xi Xiaoqing;Li Bo;Zhou Ji
太赫兹（THz）辐射与许多磁有序材料产生复杂而有趣的相互作用。介绍了一种带有温度控制装置的THz时域光谱仪，用于研究TbFeO 3的热调谐太赫兹磁响应。在T = 3-290 K，同时激发出铁磁（FM）共振和反铁磁（AFM）共振。通过透射率、共振频率偏移和定义的品质因子（Q因子，Q=ν0/Δν）评估温度对共振的影响的性能。通过引入透射率、Q因子和频移等参数来评价太赫兹磁响应的热调谐性能。随着温度的降低，透射率、Q值和蓝移均有所增加。这将有利于太赫兹光谱在控制各种材料响应方面的应用。
Terahertz (THz) radiation produces complex and intriguing interactions with many of the magnetically ordered materials. We introduced a THz time-domain spectroscopy with a temperature control attachment to investigate thermally tunable terahertz magnetic responses of TbFeO3. Ferromagnetic (FM) resonances and antiferromagnetic (AFM) resonances were excited simultaneously atT= 3–290 K. The performance of temperature effect on resonances was assessed by their transmittance, resonant frequency shifts and a defined quality factor (Q-factor,Q=ν0/Δν). Transmittance, definedQ-factor and frequency shifts were introduced to assess the thermally tunable performances of terahertz magnetic responses. Overall increased transmittance, increasedQ-factor and blue shifts were observed as temperature cools. This will be beneficial to the THz spectroscopic application in controlling responses of various materials.