【摘要】 采用化学湿法沉积制备了Co-Ni-P磁性薄膜,研究了工艺条件对其磁性的影响,并对其作为磁旋转编码器磁鼓记录介质的记录特性进行了分析。研究结果表明,薄膜矫顽力和矩形比随施镀时间增加而下降。当施镀时间为3min时,Co-Ni-P薄膜矫顽力可达42506.4A/m,矩形比为0.55。X射线衍射及扫描电镜结果表明,随施镀时间增加,薄膜矫顽力下降,晶粒尺寸变大,并发生明显的择优取向。将化学沉积Co-Ni-P薄膜应用于磁旋转编码器的磁鼓记录介质,记录特性测试结果表明,输出信号良好,脉冲计数完整,波形良好,可完整写入2048对磁极。化学沉积Co-Ni-P磁性薄膜适合于高精度、高分辨率的磁旋转编码器的磁鼓记录材料。更多还原

【Abstract】 CoNiP thin films were prepared by chemical wet depositon,and the effect of plating parameters on CoNiP magnetic property and magnetic recording performance in magnetic rotary encoders were studied.The results showed that,the films coercivity and squareness ratio decreased with the increasing of plating time.When the plating time was 3min,Co-Ni-P film coercivity was 42506.4A/m and squareness ratio was 0.55,seperately.X-ray diffraction and scanning electron microscopy results indicated that,with the plating time increased,the films coercivity decreased,the grains grew larger,and exhibited a preferred orientation.The CoNiP film was used to make a 60 mm diameter magnetic drum of a magnetic retory encoder.The recording performance testing results revealed that the CoNiP films could be recorded 2048 original magnetic poles while the amplitude of the output square waves were uniform.It is suggested that the chemical deposition CoNiP films could be a promising candidate as recording media for high accuracy and high resolution magnetic rotary encoders.更多还原