Illustration of SNDM

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  3. SNDM - Illustration

c-c domain of BaTiO3 (barium titanate)

BaTiO3 belongs to a tetragonal system at room temperature. The c-axis matches a polarization axis.

Fig. 1 shows a c-c domain pattern observed by SNDM. A periodic domain structure was revealed.

a-c domain of BaTiO3 (barium titanate)

Fig. 2 shows an a-c domain pattern of BaTiO3. As there exists a crystal isotropy along a-axis of BaTiO3, the signal of SNDM becomes zero.

Periodically poled LiNbO3 (lithium niobate)

By means of making a periodically poled domain structure artificially into nonlinear optical materials, such as LiNbO3 and LiTaO3, various kinds of optical devices can be obtained. Fig. 3 shows a SNDM image of periodically poled LiNbO3 produced by Ito lab., research institute of electrical communication. A precise periodic pattern was observed.

Please refer other examples of our results:"Simultaneous Measurement of SNDM and AFM","Resolution of SNDM" and "Quantitative Measurement"

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