ISSN:
1432-0630
Keywords:
78.30.-j
;
63.20.-e
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
Abstract E(TO)-mode properties in LiTaO3:Nd crystal were examined by analyzing the Raman spectra measured.E(TO) modes appear in the transverseA 1 spectrum. Their intensities obviously increase in theE andE+A 1 mixed-symmetry spectra but decrease in theE spectrum which shows new vibrational modes. In particular, in the transverse-E spectrum of y(xz) $$\bar y$$ geometry, the properties ofE(TO) modes are similar to those of pure LiTaO3 of the same geometry, whereas in the transverse-E spectrum in x(yz) $$\bar x$$ geometry these modes are turned intoA 1 (TO) modes. We attribute these properties to both the surface strain produced by mechanical polishing of the sample and the microstructural change of the LiTaO3 crystal resulting from Nd doping.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01538411
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