Abstract We report on optical dispersion and temperature dependence of latching-type magneto-optical properties of heavily Ga-doped bismuth iron garnet films rf-magnetron sputtered onto Gd3Ga5O12 (001) and (111) substrates. At λ = 677 nm and room temperature, epitaxial Bi3Fe3.34Ga1.66O12 (001) and (111) films show, respectively, saturation Faraday rotation θFsat = − 0.92 × 104 and − 1.05 × 104 deg/cm, transmittance T = 0.86 and 0.81, magnetic hysteresis θF-H loop squareness θFrem/θFsat = 0.84 and 1.0, and coercive field Hc = 6.76 and 24.03 kA/m. Film's Faraday rotation is nicely fitted by molecular field Neel theory in the whole temperature range from TC = 316 K down to 85 K where θFsat = − 1.9 × 104 deg/cm and Hc = 151.20 kA/m.

中文翻译：

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磁控溅射 Bi3Fe3.34Ga1.66O12 (001) 和 (111) 薄膜的光学色散和温度相关闭锁型磁光特性

摘要 我们报告了溅射到 Gd3Ga5O12 (001) 和 (111) 衬底上的重掺杂铋铁石榴石薄膜射频磁控管的锁存型磁光特性的光学色散和温度依赖性。在 λ = 677 nm 和室温下，外延 Bi3Fe3.34Ga1.66O12 (001) 和 (111) 膜分别显示饱和法拉第旋转 θFsat = - 0.92 × 104 和 - 1.05 × 104 deg/cm，透射率 T = 0.86 和0.81，磁滞 θF-H 环路垂直度 θFrem/θFsat = 0.84 和 1.0，矫顽场 Hc = 6.76 和 24.03 kA/m。在从 TC = 316 K 到 85 K 的整个温度范围内，分子场 Neel 理论很好地拟合了薄膜的法拉第旋转，其中 θFsat = − 1.9 × 104 deg/cm 和 Hc = 151.20 kA/m。