We present results of magneto-optical investigations of (CoFeZr)${}_x$(Al₂O${}_3{)}_{100-x}$ film nanocomposites in transverse Kerr effect (TKE) geometry in the spectral range 0.5–4.0$$eV and magnetic field up to 3.0$$kOe. Nanocomposites were deposited onto a glass-ceramic substrate by ion-beam sputtering. The TKE response at room temperature strongly depends on the wavelength of light, applied magnetic field H and the volume metallic fraction. From the analysis of the field dependences of TKE at different wavelengths, it follows that in the as-deposited samples, the interaction between nanoparticles at $x<30$$$at.% is small and the nanocomposite is an ensemble of superparamagnetic particles; as x increases to 32$$at.%, a superspinglass-type state arises, then, in the vicinity of 34$$at.%, along with individual superparamagnetic particles, superferromagnetic regions appear. Long-range ferromagnetic order arises at concentrations x less than the percolation threshold for conductivity $x_{\mathrm{\text{per}}}=42.6$$$at.%. In the presence of two different magnetic states in the samples, TKE is not proportional to the magnetization. Both the field dependences at near-infrared region and the spectral dependences of TKE change significantly after annealing of the samples, while the changes in the field dependences of the magnetization are almost imperceptibly.

我们展示 (CoFeZr) 的磁光研究结果${}_X$( _Al2O _${}_3{）}_{100-X}$横向克尔效应 (TKE) 几何形状的薄膜纳米复合材料，光谱范围 0.5–4.0$$eV 和磁场高达 3.0$$科埃。通过离子束溅射将纳米复合材料沉积到玻璃陶瓷基板上。室温下的 TKE 响应很大程度上取决于光的波长、施加的磁场H和体积金属分数。从不同波长下 TKE 场依赖性的分析可以看出，在沉积样品中，纳米粒子之间的相互作用在$X<30$$$at.%较小，纳米复合材料是超顺磁性颗粒的集合体；当x增加到 32 时$$at.%，出现超级旋转玻璃型状态，然后，在 34 附近$$at.%，与单个超顺磁性颗粒一起出现超铁磁性区域。当浓度x小于电导率渗滤阈值时，会出现长程铁磁有序$X_{\mathrm{\text{每}}}=42。6$$$在。％。当样品中存在两种不同的磁状态时，TKE 与磁化强度不成正比。样品退火后，近红外区域的场依赖性和 TKE 的光谱依赖性均发生显着变化，而磁化强度的场依赖性的变化几乎难以察觉。