掺钛单晶BaFe12-xTix019 m型六铁体的极性软模式

2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) Pub Date : 2018-09-01 DOI:10.1109/IRMMW-THZ.2018.8509995

L. Alyabyeva, S. Yegiyan, V. Torgashev, E. Zhukova, D. Vinnik, A. Prokhorov, S. Gudkova, B. Gorshunov

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引用次数: 1

摘要

用太赫兹红外光谱研究了$\mathbf{Ti}^{4+}$掺杂的单晶m型六铁氧体钡在10 ~ 300 K温度范围内两主极化的电动力学响应。研究了极性声子的动力学以及与极性畴壁弛豫过程和多声子相互作用的非调和贡献有关的低能吸收机制。

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Polar soft mode in titanium-doped single crystalline BaFe12-xTix019 M-type hexaferrite

Electrodynamic response of single-crystalline M-type barium hexaferrite doped with $\mathbf{Ti}^{4+}$ is studied for two principal polarizations in the temperature range 10–300 K by means of terahertz-infrared spectroscopy. The dynamics of polar phonons is investigated along with low-energy absorption mechanisms connected with relaxation process in polar domain walls and with anharmonic contributions of multiple phonons interaction.

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2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)

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