THE BIGEST DIFFERENCE OF NATRUAL SYNTHETIC

    Quartz crystal, natural or artificial, is a kind of piezoelectric materials. Quartz crystal oscillator is made up of high quality quartz crystal oscillator (resonators) and oscillator circuit. Cut Crystal quality, orientation, structure and crystal oscillator circuit, jointly determine the oscillator performance.

    synthetic quartz is using "water temperature difference method" bred in the autoclave, crystal growth method is a high temperature and high pressure hydrothermal and aqueous crystallization method. It is characterized by increased melting of the material below the phase transition temperature of dissolution and crystallization. Ingredients: cultivation of quartz crystal material is natural quartz pieces, also known as the melting of Quartz.

    Transparency not less than 80%,Si02 ingredient is usually used of not less than 99.8%, weight between 5-50g of hybrid particles. Seed: seeds to choose in order to obtain a larger growth rate and a higher utilization rate, seed quality is a prerequisite for high quality quartz crystal growth. Common specifications are Z+0 °, Y+0 °, and so on. Size approximately: 2.5 ± 0.5mm, angle error: xx ′ ≤ 30 ', ≤ 20 ' yy '. Pressure: 1000---1500atm (ATM=101325pa) temperature: 350 degrees-400 synthetic quartz crystal quality factor Q of quality synthetic quartz crystals, it shows that the quality of the Quartz resonator. Synthetic quartz crystals the Q value is divided into five levels: level a b c d e Q values ≥  1.0 ≥ 0.5 by 1.8 by 2.4 by 3.0 quality factor Q value Q values of quartz crystals by infrared spectrometry method for the assessment of infrared spectroscopy is a method of rapid determination, it could accurately measure the Q value of every part of the Crystal.

    Due to the presence of impurities and defects in quartz crystals, a group will appear in the near-infrared light infrared absorption bands, through which absorb OH with a quartz crystal with ink and impurities affect Q values of quartz crystals are mainly OH, quartz crystal can be determined using the above feature of Q values. Quartz crystal defects 1. twinning: refers to two or more of the same Crystal, United to each other on a regular basis.  Piezoelectric crystals: with rotation Crystal InterGrowth.  (Dauphine twin) twinning: the interlocking of different rotation crystal. (Brazil twinning) double crystal appears in natural quartz crystals, but also in the quartz wafer processing caused by the twins. For example, quartz heating temperature more than 573 ° c, or up to 573, temperature gradient inside the quartz wafer is too large, may produce twins. As another example, wafer grinding, due to the effect of mechanical stress, may produce tiny electric twins. 2. inclusion: is mixed crystals of other minerals. Inclusion is a major defect of quartz crystals, which seriously affected the electrical properties of the Quartz resonator. 3. the blue needle: Blue needle-shaped defects in quartz crystals known as blue pin. 4. crack: is crystal little fissures 5. Crystal somewhere inside there is a lot of tiny bubbles and a small crack, white-cotton, which commonly known as cotton .

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