Fraunhofer Diffraction to Determine the Twin Angle in Single-Crystal BaTiO3
Applied Optics, Vol. 42, Issue 22, pp. 4463-4467 (2003)
http://dx.doi.org/10.1364/AO.42.004463
Acrobat PDF (254 KB)
Abstract
We present a new method for determining the electrically induced twin angle α of a (100) bulk single crystal of barium titanate (BaTiO3) using a nondestructive optical technique based on Fraunhofer diffraction. The technique required two steps that were performed simultaneously. First, we analyzed the diffracted light intensity captured with a line camera. Second, we measured the size of the diffracting element by analyzing images of the crystal’s surface taken with a CCD camera. The value obtained for the twin angle is 0.67° ± 0.05°, which compares favorably with the theoretical value of 0.63°.
© 2003 Optical Society of America
OCIS Codes
(050.0050) Diffraction and gratings : Diffraction and gratings
(050.1960) Diffraction and gratings : Diffraction theory
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(120.5820) Instrumentation, measurement, and metrology : Scattering measurements
(160.0160) Materials : Materials
(160.2260) Materials : Ferroelectrics
Citation
Mike Melnichuk and Lowell T. Wood, "Fraunhofer Diffraction to Determine the Twin Angle in Single-Crystal BaTiO3," Appl. Opt. 42, 4463-4467 (2003)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-42-22-4463
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