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Ferromagnetic Resonance in Si‐Doped YIG

机译:掺Si YIG中的铁磁共振

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摘要

The magnetocrystalline anisotropy of Fe2+ ions in YIG has been studied by means of FMR at 10 and 30 GHz at temperatures between 4° and 400°K. Below 50°K strong magnetic anneal occurs. Anneal fields were in the [100], [111], and [110] directions. The g factor is 1.98 at 4.2°K and 1.96 at 290°K. At low temperature the resonance field HR is less than ω/γ by as much as 2000 Oe for all orientations in the (110) plane. The HR versus angle curves are explained quantitatively by taking into account canting of the spins around the Fe2+ ions as well as perturbing electrostatic fields of the neighboring Si ions. The correct temperature dependence and anisotropy of the linewidth ΔH also follow from the model calculation.
机译:已经通过FMR在10和30 GHz下在4°和400°K之间的温度下研究了YIG中Fe2 +离子的磁晶各向异性。低于50°K会发生强磁退火。退火场沿[100],[111]和[110]方向。 g因子在4.2°K下为1.98,在290°K下为1.96。在低温下,对于(110)平面中的所有方向,共振场HR都比ω/γ小2000 Oe。通过考虑到Fe2 +离子周围的自旋倾斜以及对相邻Si离子的静电场的干扰,可以定量地解释HR与角度的关系曲线。从模型计算中也可以得出正确的温度依赖性和线宽ΔH的各向异性。

著录项

  • 来源
    《Journal of Applied Physics》 |1969年第10期|共7页
  • 作者

    Hartwick T. S.; Smit J.;

  • 作者单位

    Departments of Electrical Engineering and Materials Science, University of Southern California, Los Angeles, California 90007;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
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