Magnetic and optical properties of MgAl2O4-(Ni0.5Zn0.5)Fe2O4thin films prepared by pulsed laser deposition
Magnetic and optical properties of MgAl2O4-(Ni0.5Zn0.5)Fe2O4thin films prepared by pulsed laser deposition
复制标题
脉冲激光沉积MgAl2O4-(Ni0.5Zn0.5)Fe2O4薄膜的磁光学性能
DOI：
10.1088/1468-6996/12/3/034408
复制
发表时间：
2011
期刊：
影响因子：
--
通讯作者：
Hisao Suzukiand Naoki Wakiya
中科院分区：
文献类型：
--
作者：
Takeshi Misu;Naonori Sakamoto;Kazuo Shinozaki;Nobuyasu Adachi;Hisao Suzukiand Naoki Wakiya
通过脉冲激光沉积在熔融SiO 2 基底上生长由MgAl 2 O 4 和(Ni 0.5 Zn 0.5) Fe 2 O 4 组成的薄膜([MA (100-x)-NZFx]薄膜)。 X射线衍射测量表明，薄膜是多晶的，并且它们的晶格常数随成分线性变化，表明形成了固溶体。 x=60的薄膜是顺磁性的，x≥70的薄膜是铁磁性的。薄膜在可见光范围内的透明度高于75%，但透明度随着x值的增加而降低。当 x= 20、40、60、80 和 100 时，光学带隙分别为 2.95、2.55、2.30 和 1.89 eV。在可见光范围内，法拉第旋转角随着 x 的增加而增加，x= 70 的薄膜在 570 nm 处表现出 2000 度 cm-1 的值，与 Y 3 Fe 5 O 12 的旋转角相当。由于其高透明度延伸到可见光范围，[MA (100-x)-NZFx] 薄膜可用于新型磁光器件。
Thin films composed of MgAl 2 O 4 and (Ni 0.5 Zn 0.5) Fe 2 O 4 ([MA (100-x)-NZFx] films) were grown on fused SiO 2 substrates by pulsed laser deposition. X-ray diffraction measurements revealed that the films were polycrystalline, and that their lattice constant varied linearly with composition, indicating the formation of a solid solution. The film with x= 60 was paramagnetic and those with x≥ 70 were ferromagnetic. The films had a transparency above 75% in the visible range, but the transparency decreased with the x value. The optical band gaps were 2.95, 2.55, 2.30 and 1.89 eV for x= 20, 40, 60, 80 and 100, respectively. The Faraday rotation angle increased with x in the visible range, and the film with x= 70 exhibited a value of 2000 degrees cm-1 at 570 nm, which is comparable to the rotation angle of Y 3 Fe 5 O 12. Owing to their high transparency, which extends into the visible range, the [MA (100-x)-NZFx] films can be used in novel magneto-optical devices.