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本文报导用化学方法从改进的Brenner镀液中沉积Co-P磁性薄膜的方法。列举的详细数据论证了沉积条件对薄膜的厚度、P含量和磁性能的影响。这种薄膜比过去所报导过的薄膜还薄,矫顽力范围接近80—900奥斯特,且矫顽力与厚度的关系为:HC=At~(-2/5)。这与Fisher和Chilton对较厚的薄膜所报导的情况相似。已经知道,改变某些参数可以控制沉积薄膜的磁性能,如:薄膜的厚度、镀液的PH、次磷酸盐的浓度和镀液的温度;前两个因素是最主要的,它掩蔽了P共沉淀对磁性能可能有的任何影响。本文叙述了一种用来精确自动控制镀液PH值的仪器。利用本文所述之方法可获得像镜面的粘着好的薄膜,它通常适合于磁性记录以及Kerr磁光读出。
This paper reports a method of chemically depositing Co-P magnetic thin films from a modified Brenner bath. The detailed data presented demonstrate the effect of deposition conditions on the film thickness, P content and magnetic properties. This film is thinner than the films reported in the past, and has a coercive force close to 80-900 Oersted. The relationship between coercivity and thickness is: HC = At ~ (-2/5). This is similar to what Fisher and Chilton reported for thicker films. It is known that changing some parameters can control the magnetic properties of the deposited films, such as the thickness of the film, the pH of the bath, the concentration of the hypophosphite and the temperature of the bath. The first two factors are the most important, which mask the P Coprecipitation may have any effect on magnetic properties. This article describes an instrument used to precisely and automatically control the pH of a plating solution. Mirror-like, well-adhered films are obtained using the methods described herein and are generally suitable for magnetic recording and Kerr magneto-optical reading.