Magnetic and magneto‐optic properties of praseodymium‐ and bismuth‐substituted yttrium iron garnet films
Magnetic and magneto‐optic properties of praseodymium‐ and bismuth‐substituted yttrium iron garnet films
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镨和铋取代的钇铁石榴石薄膜的磁和磁光性质
DOI：
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发表时间：
1986
期刊：
影响因子：
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通讯作者：
K. Witter
中科院分区：
文献类型：
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作者：
P. Hansen;C. Klages;K. Witter
组成为 R3−x−yPrxBiyFe5O12 且 R=Lu、Y 和 0≤x≤1.8、0≤y≤1.7 的石榴石薄膜是由不同的熔体成分和在不同的生长条件下生长到具有 (100)、(110)、(111) 和 (211) 取向的取代钆镓石榴石基底上。研究了饱和磁化强度Ms、单轴各向异性常数Ku、法拉第旋转θF和法拉第椭圆率ψF对成分和温度的依赖性。与 Y3Fe5O12 相比，Ms 的变化本质上与平行于净铁矩的 Pr 矩的排列以及主要源自铋的居里温度的增加有关。然而，这两种贡献在室温范围内都是可以忽略不计的。单轴各向异性受 Pr 和 Bi 的强烈影响。各向异性贡献ΔKu /x 0 结果近似是相加的。 Pr 和 Bi 都会显着增强磁光效应。在 λ=633 nm θF i...
Garnet films of composition R3−x−yPrxBiyFe5O12 with R=Lu, Y, and 0≤x≤1.8, 0≤y≤1.7 have been grown from different melt compositions and under various growth conditions onto substituted gadolinium gallium garnet substrates with (100), (110), (111), and (211) orientation. The dependence on composition and temperature of the saturation magnetization Ms, the uniaxial anisotropy constant Ku, the Faraday rotation θF, and the Faraday ellipticity ψF, have been investigated. The change of Ms as compared to that of Y3Fe5O12 is essentially associated with the alignment of the Pr moment parallel to the net iron moment and the increase of the Curie temperature originating mainly from the bismuth. However, both contributions are negligible in the room‐temperature range. The uniaxial anisotropy is strongly affected by both Pr and Bi. The anisotropy contributions ΔKu /x 0 turn out to be approximately additive. Both Pr and Bi give rise to a pronounced enhancement of the magneto‐optical effects. At λ=633 nm θF i...