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首页> 外文期刊>Journal of Crystal Growth >Single crystal growth of MgB_2 by evaporating Mg-flux method
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Single crystal growth of MgB_2 by evaporating Mg-flux method

机译:蒸发Mg通量法生长MgB_2单晶

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摘要

Well hexagonal plate-shaped single crystal of magnesium diboride (MgB_2) with the size of 100 μm has been grown at ambient pressure by evaporating Mg-flux method which is a new practice to grow MgB_2 single crystal. The superconducting transition of as-prepared crystals was measured to be at about 33.7 K by superconducting quantum interference device (dc-SQUID) magnetometer. The X-ray powder diffraction (XRD) confirmed the MgB_2 phase, and the electron diffraction patterns measured by using high-resolution transmission electron microscope (HRTEM) confirmed the structure of MgB_2 single crystal. The single crystal images were observed by scanning electron microscope (SEM) and metallographic microscope (MM). The micromechanism of crystal growth is also proposed through the investigations of SEM and MM.
机译:通过蒸发Mg-通量法在环境压力下生长了尺寸为100μm的六方板状六方晶的镁硼化物(MgB_2),这是一种生长MgB_2单晶的新方法。通过超导量子干涉仪(dc-SQUID)磁力计测得所制备晶体的超导跃迁约为33.7K。 X射线粉末衍射(XRD)证实了MgB_2相,并且通过使用高分辨率透射电子显微镜(HRTEM)测量的电子衍射图证实了MgB_2单晶的结构。通过扫描电子显微镜(SEM)和金相显微镜(MM)观察单晶图像。通过SEM和MM的研究,还提出了晶体生长的微观机制。

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