在高强迫性磁电陶中可调节的子特拉赫兹共振吸收
Evgeny A Gorbachev1, Liudmila N Alyabyeva2, Artem V Pronin3
1Faculty of Materials Science, Shenzhen MSU-BIT University, Shenzhen 518172, China. ev.a.gorbachev@gmail.com.
Materials horizons
|June 11, 2024
概括
密集的Sr-Ca六化陶具有高强制性和5-300K的子特拉赫兹共振频率.磁化使得特拉赫兹电子应用的有效线性频率调整成为可能.
科学领域:
- 材料科学 材料科学 材料科学
- 凝聚物质物理学 凝聚物质物理学
- 磁力学 磁力学 是一种
背景情况:
- 具有高替代性的M型六酸盐显示出高强制性和子特拉赫兹自然铁磁共振 (NFMR) 的潜力.
- 之前的研究集中在单域粒子上,使得散装陶的特性得到了较少的探索.
研究的目的:
- 为了制造密集的Sr0.67Ca0.33Fe8Al4O19陶.
- 为了研究这些陶在广泛的温度范围内 (5-300 K) 的磁静电和磁力学特性.
- 探索这些材料在太赫兹 (THz) 电子应用中的潜力.
主要方法:
- 制造密度高的Sr0.67Ca0.33Fe8Al4O19陶样品. 陶样品的制造过程中使用的材料包括:
- 从5K到300K的温度测量强制性和NFMR频率.
- 研究磁化和外部磁场对共振吸收和频率的影响.
主要成果:
- 密集的陶在整个温度范围内保持了高磁硬度 (10-20 kOe强迫力) 和NFMR频率 (140-200 GHz).
- 磁化显著降低了共振吸收,几乎消除了5kOe的共振线.
- 通过外部磁场对NFMR的有效线性频率调节被证明是剩余样本.
结论:
- 密集的Sr0.67Ca0.33Fe8Al4O19陶具有强大的磁性和可调节的子特拉赫兹共振频率.
- 这些发现凸显了介电铁磁体在开发工业太赫兹电子设备方面的潜力.
- 观察到的特性为使用磁调的THz应用开辟了新的途径.
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