There is an absorption band around 700cm-1 in the infrared absorption spectrum, which being identical with that of the bulk crystals, a wider infrared transition region is given by the films.

 
  • 结果表明,薄膜的红外吸收谱在700cm~(-1)处有一吸收带,与块状晶体相同,因此有较宽的红外透过区。
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