What is the principle of directional formation of sapphire crystal?

                                   What is the principle of directional formation of sapphire crystal?

Sapphire crystal orientation is to establish a three-dimensional space coordinate system in the crystal, and then we need to select the coordinate axis (also called crystal axis), determine the unit length (axis length) and its ratio (axis ratio) on each crystal axis. As in geometry, we need to have certain rules to orient the crystal, so as to reflect the characteristics of different crystal systems. Take one of the higher secondary axes of the crystal system, the fourth axis (L4), as the z-axis, and the other two mutually perpendicular secondary axes (L2) or the normal of the symmetry plane as the x-axis and y-axis respectively (PS: if there is no L2 or P, the x-axis and y-axis are selected parallel to the crystal edge). The tetragonal crystal system has three mutually straight crystal axes, two of which are equal in length to the horizontal axis (x axis and r axis) but not equal in length to the vertical axis (z axis), that is, a=b ≠ c, α=β=γ= ninety ۫۫。 The highly symmetrical type of the crystal system is L44L25PC.

Sapphire crystal orientation belongs to tetragonal gem minerals, such as zircon, rutile, cassiterite, andalusite and rune. In sapphire crystal, the center is the origin; Crystal axis: the x axis, y axis and z axis intersect in the sapphire crystal Three straight lines at the center. For the cubic and hexagonal crystal systems, a u axis needs to be added (the distribution and positive and negative directions of the crystal axis are the same as those specified in geometry); 3 Axis angle: the included angle between the positive ends of the crystal axis α (y^z)、 β (z^ x)、 γ (x ^ y); Axial ratio: the crystal axis is actually a row and column (straight line) in the lattice structure. The node spacing on this row and column is called axis length or axis unit. The axis unit on the xyz axis is represented by a0, b0 and c0 respectively. It is impossible to determine the axial length only according to the macroscopic study of crystal shape, but we can determine the ratio a: b: c between them according to the method of geometric crystallography, which is called the axial ratio. Dandong New Oriental Crystal, which started in 2007, is a high-tech enterprise engaged in the research and development of X-ray crystal orientation and testing equipment. At present, X-Ray crystal orientation and testing equipment and other products have been exported to more than ten countries Jiahe District is widely used by well-known semiconductor materials, LED, solar photovoltaic industry manufacturing enterprises at home and abroad, as well as universities and scientific research institutes engaged in research and development, and its domestic market share has reached more than 70%.

Kunshan Shuojing Optoelectronic Technology Co., Ltd. has set foot in the field of new materials extensively, with complete methods and means for manufacturing functional ceramics and sapphire crystals, scintillating crystals, and laser crystals, forming four series of high-tech products mainly including optical transparent ceramics, sapphire optical window sheets, scintillating crystals, lasers, and nonlinear crystals. It involves Suzhou, Kunshan, Shanghai, Zhejiang, Changzhou and other Yangtze River Delta regions. With strong technical strength, good reputation, thoughtful and fast service and comprehensive technical support before and after sales, we use our sincerity and sweat to develop and create the future together!