Tcr ( temperature coefficient of resistance ) of the sample was measured . the measurement results showed that the tcr of the thin film which resistance range was under 45 - 60k was larger than that which resistance under 15 - 25k . at last the xps was used to analyze the composition of the films 基片温度的变化直接影响膜层的生长及特性,可以明显地改善薄膜的机械强度和附着力,而且随着基片温度的升高,在磁控溅射过程中各个价态的钒容易向高价的钒进行转换。
3.
Remember the following words and expressions : e . g . multimeter ; circuit , current ; voltage ; resistance ; digital multimeter ; analogue multimeter ; analogue multimeter scales ; zero adjustment control ; zero adjustment control for resistance ranges ; measurement ranges switch ; transistor test socket ; meter probe ; positive terminal ; negative terminal ; anode ; cathode ; red lead ; black lead ; power supply ; connect in parallel ; connect in series 记住万用表、电路、电流、电压、电阻、数字万用表、模拟万用表、表头、机械零位调整器、欧姆零位调整器、量程选择开关、晶体管插孔、表棒、正接线端、负接线端、阳极、阴极、红导线、黑导线、电源、并联、串联等常用英文单词,并逐步掌握。