CAJ | 학술논문

用熔盐法生长了两种Bi替代的高法拉第旋转、温度稳定的稀土铁石榴石磁光单晶Bi-HoYbIG和Bi-GdYIG，测试分析了其在近红外波段的磁光性能及其温度特性。Ho3-z-y，YbyiBixFe512(x＝1．03，y=1.20)单晶的比法拉第旋转角为－891°／cm(λ=1.31 μm)和－767°／cm(λ＝1．55 μm)，Y3-z-yGdyBixFe5O12(x=0．46，y=0．24)单晶的值为－1067°／cm(λ=1.31μm)和－882°／cm(λ=1.55μm)，两者都比纯YIG晶体高出许多。而且这两种晶体的法拉第旋转角随温度变化较小，在250～400K范围内，其温度灵敏度S分别为4．60×10-4／K和4．20×10-4/K。分析表明，Bi的掺入能大大提高晶体的法拉第旋转角，而yb3+、Gd3+等离子的掺入可以有效降低Bi3+替代磁光单晶的法拉第旋转的温度灵敏性，Bi-HoYbiG和Bi-GdYIG等磁光晶体非常适合作为高灵敏度、温度稳定的光纤电流传感器中的法拉第转子材料。
용용염법생장료량충Bi체대적고법랍제선전、온도은정적희토철석류석자광단정Bi-HoYbIG화Bi-GdYIG，측시분석료기재근홍외파단적자광성능급기온도특성。Ho3-z-y，YbyiBixFe512(x＝1．03，y=1.20)단정적비법랍제선전각위－891°／cm(λ=1.31 μm)화－767°／cm(λ＝1．55 μm)，Y3-z-yGdyBixFe5O12(x=0．46，y=0．24)단정적치위－1067°／cm(λ=1.31μm)화－882°／cm(λ=1.55μm)，량자도비순YIG정체고출허다。이차저량충정체적법랍제선전각수온도변화교소，재250～400K범위내，기온도령민도S분별위4．60×10-4／K화4．20×10-4/K。분석표명，Bi적참입능대대제고정체적법랍제선전각，이yb3+、Gd3+등리자적참입가이유효강저Bi3+체대자광단정적법랍제선전적온도령민성，Bi-HoYbiG화Bi-GdYIG등자광정체비상괄합작위고령민도、온도은정적광섬전류전감기중적법랍제전자재료。
Two magneto-optic single crystal garnets Bi-HoYbIG and BiGd: YIG with high Faraday rotation and low temperature sensibility were growth from high temperature flux. Magneto-optic properties in ear infrared range of these two crystals were measured. Magneto-optic crystal garnet Ho3-x-yYbyBixFe5O12 (x = 1.03, y = 1.20) has the specific Faraday rotation θFof －891°/cm (λ = 1.31 μm) and －767°/cm (λ = 1.55 μm), and Y3-x-yGd,BixFe5O12 (x = 0. 46, y = 0. 24) has －1067°/cm (λ = 1. 31 μm) and -882°/cm (λ = 1. 55 μm), both are much higher than pure YIG′s. Their Faraday rotations have low temperature dependence also, the temperature sensibilities are 4.60× 10-4K-1of Bi-HoYbIG and 4.20× 10-4K-1of BiGd:YIG among 250～400 K. The results indicated that doped with Bi3+ can enlarged Faraday rotation greatly, and dodoped with Yb3+ and Gd3+ can effetely reduce Faraday rotation temperature sensibility of Bi-substituted magneto-optic garnets. Garnets Bi-HoYbIG and Bi-GdYIG are very suitable for using as Faraday rotation elements in high sensibility and temperature stable magneto-optic current sensors.