【摘要】 以99.999%的锌、锗和红磷为原料通过直接化合的方法合成ZnGeP2多晶料,采用布里奇曼法通过自发成核方式生长出尺寸为Φ7mm×25mm的ZnGeP2晶体。X射线粉末衍射实验表明合成的多晶料的成分是ZnGeP2,所获ZnGeP2晶体的结构属于四方晶系,空间群I4-2d。X射线摇摆曲线表明所得晶体完整性较好。用莫氏硬度计测得ZnGeP2晶体的莫氏硬度为6.5。测量了晶体的热重和差热曲线,证明在室温~800℃的范围内晶体热学性质稳定。更多还原

【Abstract】 The polycrystalline material of ZnGeP₂ was synthesized by means of a direct reaction with 5N pure zinc,germanium and red phosphor. The ZnGeP₂ crystal with dimension of 7mm×25mm can be obtained by Bridgman method with the synthesized polycrystalline material.The cell parameters of the as-grown ZnGeP₂ crystal were measured by X-ray powder diffraction.The full-width half-maximum（FWHM） of the X-ray rocking curve of the as-grown ZnGeP₂ crystal was measured to be 245.55″.The Mohs hardness was determined to be 6.5.The DSC curve indicated that the as-grown ZnGeP₂ crystal has good thermal stability in the temperature range from room temperature to 700℃.Thermal gravity analysis shows that the as-grown ZnGeP₂ crystal mass changes very little and no more than 0.5% from room temperature to 800℃.更多还原