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中文摘要：
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。
英文摘要：
A series of MgB2-xCx（X=0、0.02、0.05、0.1、0.13、0.15、0.17）have been prepared in static Ar atmosphere. The high temperature R-T curves of these MgB2-xCx samples with X=0.02、0.05、0.13、0.15、0.17 during they were heated in the temperature-rising process were obtained. The phase-formulation temperature of these carbon-doping samples （X=0.0、0.05、0.1、0.13、0.15、0.17） are slightly lower than MgB2 sample. The X-ray spectrum, M-T curve, R-T curve have also been measured and discussed.
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