Ukrainian Journal of Physical Optics 

Number  2, Volume  2, June  2001

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Domain structure studying in the Pb3(PO4)2 crystals by the imaging polarimeter
Krupych O.M., Kostyrko M.E., Vlokh R.O.

Institute of Physical Optics, 23 Dragomanov Str., 79005, Líviv, Ukraine

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The imaging polarimeter for the domain structure studying in the Pb3(PO4)2 ferroelastics crystals is constructed. Three blocks of domains S1, S2 and S3 are observed at room temperature. The differences in the extinction positions in these blocks are determined as Df12=32.04° and Df13= -2.83°. In the second and third domain block the difference between light intensity in extinction position and diagonal position is smaller than in the first block. It means that light propagated along Z-axis passes through few different domains. Obtained results are discussed on the base of Jones matrix approach. It was shown that studying the orientation of the optical indicatrix in the neighbouring domains it is necessary to take into account the intensities of light transmitted through sample in crossed polarizers. The advantage of the imaging polarimeter for this aim is demonstrated

Key words: imaging polarimeter, ferroelastics, domain structure, Pb3(PO4)2 crystals

doi 10.3116/16091833/2/2/93/2001

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