Abstract
The domain structures near the α-INC-β phase boundary in quartz were simultaneously observed using synchrotron radiation X-ray topography and optical microscopy. In (1–10) topographic images of Z-cut samples, a fine structure corresponding to the “m-zone” in the optical microscopic image was observed. In (3–31) topographic image, at the “fog-zone” of the α phase side, a marble-like domain, which has never been seen before, with clear contrast was observed. A section topography of the marble-like domain showed that this domain formed a needle shape along the Z-axis. Therefore, the boundary of these domains is the origin of the property of opalescence.
Acknowledgments
The authors wish to thank Hiroshi Sugiyama for his helpful advice on experimental techniques at the Photon Factory of KEK.