Study on Improvement of Magneto-optical Characteristics of Ferromagnetic Heusler Alloy Films with Artificial Lattice Deposited by Sputtering.

由于一种带有晶体结构Clb类型的PtMnSb Heusler合金是众所周知的，有一个非常大的磁Kerr旋转角度K，它的磁特性在理论上是有趣的，而且它的薄电影也可以用来磁光学记录媒体。最近，关于用大K制备PtMuSb薄膜的若干研究通过sputtering和Vacuum evaporation已经被带走了。However，他们还没有找到足够的持久性的异源性物质，被用作实际应用程序，如磁光学记录媒体。关于其他手的若干研究，关于确定持久性异源性物质已经被执行的可能性。它已经过去了，例如，报告说，可摧毁的持久性异构体可能会在多层薄膜中的几个原子层中被诱导到铁磁层和非磁性层之间的接口中。在本研究中，为Pt/MnSb多层异构体薄膜的准备了Pt/MnSb的持久性异构体c ... More 通过使用面对面目标、Sputtering Apparatus已受到攻击，并对其晶体和大分子特征进行了详细调查。Pt/MnSb多分子的薄膜已被准备好使用面对面目标、Sputtering Apparatus来调查磁性特征、特别、普遍的异向性的薄膜，具有较大的磁性-光学Kerr旋转角度k.。Pt层和MnSb在200 ° C以下的温度下可替代地沉积在玻璃滑块上。Saturation Magnetization Ms and the Coercive Force Hc of Them Depend strong on the Ratio in the Thickness of the Pt layer to bilayer （Pt layer + MnSb layer） Thickness。Ms是550 C emu/cc in annealed films的最大值。在真空展览中，一些400 ° C的150分钟内被禁用，具有显著意义的持久性异源性。例如，由50 A-thick Pt/MnSb多层薄膜组成的2000 A-thick MnSb层和大约13\thick Ptones具有持久性的异构常数Ku，为4x 10 ^5erg/cc。从某种意义上说，这些电影可能会被用作具有较大输出信号的新型磁光学记录媒体。Less（低）

Since a PtMnSb heusler alloy with a Clb type of crystal structure is well known to have an extremely large magneto optical Kerr rotation angle K, its magnetic characteristics are interesting theoretically and its thin films are candidates for magneto-optical recording media. Recently, several studies on the preparation of PtMuSb thin films with large K by sputtering and vacuum evaporation have been carrried out.However, they haave not yet had sufficient perpendicular anisotropy to be used for practical applications such as magneto-optical recording media.On the other hand several studies on the possibility of realizing perpendicular anisotropy have been performed. It has been, for example, reported that destinguishable perpendicular anisotropy may be induced in several atomic layers in the vicinity of interfaces of the ferromagnetic layer and non-magnetic layer in multilayered films.In this study, the preparation of Pt/MnSb multilayered films with outstanding perpendicular anisotropy c … More omposed of Pt layers and MnSb ones by using Facing Targets Sputtering apparatus has been attempted and their crystallographic and magnatic characteristics have been investigated in detail.Pt/MnSb multilayered films have been prepared by using a Facing Targets Sputtering apparatus to investigate magnetic characteristics, especially, perpendicular anisotropy of films with large magneto-optical Kerr rotation angle k. Pt layers and MnSb ones were alternately deposited on a glass slideat a substrate temperature off 200゜C. The saturation magnetization Ms and the coercive force Hc of them depend strongly on the ratio in thickness of the Pt layer to bilayer (Pt layer + MnSb layer) thickness. Ms is a maximum of 550゜C emu/cc in annealed films. Some films annealed at 400゜C for 150 minutes in vacuum exhibit significant perpendicular anisotropy. For example, a 2000゜A-thick Pt/MnSb multilayered film composed of 50A-thick MnSb layers and about 13\thick Pt ones had perpendicular anisotropy constant Ku of 4x10^5 erg/cc. Consequently, these films may be excellent candidates used as a new type of magneto-optical recording media with large output signals. Less