METHOD AND DEVICE FOR MEASURING ABSORPTION FACTOR OF FERROELECTRIC CRYSTAL IN A PHASE TRANSITION AREA OF AN IZOABSORPTION CURVE

摘要

Method and device for measuring the isoadsorption coefficient curve of ferroelectric crystal adsorption in the branch of phase transformations. The invention belongs to the branch of optics and can be used for the research of optical attributes of ferroelectric crystals. The aim of this invention is to increase the accuracy of the isoadsorption coefficient curve. To achieve this, the intensity of monochromatic light going through the sample and directly from the source is measured, the isoadsorption coefficient is measured from their ratio, and the wavelength of the monochromatic light is changed so that the adsorption coefficient of the sample would stay at the set level. The device used for this measurement consists of the source of light, light intensity modulator, monochromatic device and control block, polarization device, cryostat with thermometer, photo recipient, synchronic detector, tumbler, memory block, tension dividing block and dicoordinate registration device. The additional devices are a comparing device and a support signal source.