我们制备了掺碳二硼化镁系列样品MgB2-xCx(x=0、0.02、0.05、0.1、0.13、0.15、0.17),得到了x=0.02、0.05、0.13、0.15、0.17等样品在高温烧结过程的升温阶段的R～T曲线(简称为HT R～T曲线).发现这些样品的成相温度比不掺碳的MgB2样品的成相温度要低一些,处于500℃附近.我们也对x=0.0、0.05、0.1、0.13、0.15、0.17这一系列样品的X光图谱,低温M～T曲线,R～T曲线进行了测量和讨论.
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