Skip to main content Accessibility help
×
Home

Growth Twins in YbxY1−xAl3(BO3)4 and NdxGd1−xAl(BO3)4 Crystals Observed by White-Beam Synchrotron Radiation Topography

  • X.B. Hu (a1), J.Y. Wang (a1), M. Guo (a1), S.R. Zhao (a1), B. Gong (a1), J.Q. Wei (a1) and Y.G. Liu (a1)...

Abstract

Growth twins in Ybx Y1−xAl3(BO3)4 (YbYAB) and NdxGd1−xAl3(BO3)4 (NGAB) crystals were observed by white-beam synchrotron radiation topography combined with chemical etch. It was found that growth twins in YbYAB crystals are of inversion types in which two twinned pairs have the central inversion relationship. This kind of twinning was visible in x-ray topography not by ‘domain contrast’ but by ‘boundary contrast’ stemming from the kinematical x-ray diffraction at the boundary. Growth twins in NGAB crystals are of 1800 rotation types in which the twofold symmetric operation axis is parallel to the [0001] axis. This kind of twinning often shows black-and-white contrast in x-ray topography which originates from the different structure factors between twinned pairs. In addition. the formation mechanisms of growth twins are discussed.

Copyright

References

Hide All
1. Luo, Z.D., Jiang, A.D., Huang, Y.C. and Qiu, M.W., Chin. Phys. Lett. 6, 440 (1989).
2. Dorozhkin, L.M., Kuratev, I.I., Leonyuk, N.I., Timchenko, T.I. and Shestakov, A.V., Soviet Tech. Phys. Lett. 7, 1297 (1981).
3. Omastsu, T., Kato, Y., Shimosegawa, M., Optics Communications 118, 302 (1995).10.1016/0030-4018(95)00208-P
4. Lu, B.S., Wang, J., Pan, H.F. and Jiang, M.H., J.Appl.Phys. 66, 6052 (1989).10.1063/1.343583
5. Iwai, M., Mori, Y., Sasaki, T., Nakai, S. and Sarukura, N., Jpn.J.Appl.Phys. 34, 2338 (1995).10.1143/JJAP.34.2338
6. Wang, J.Y, Pan, H.F., Wei, J.Q., Liu, Y.G., Tian, L.L., The 7th China-Japan Symposium on Science and Technology of Crystal Growth and Materials, Shanghai, China, November 1, 1996, pp. 5.
7. Chani, V.I., Shimamura, K., Inoue, K., Fukuda, T. and Sugiyama, K., J.Cryst.Growth 132, 173(1993).10.1016/0022-0248(93)90259-Y
8. Jung, S.T., Choi, D.Y., Kang, J.K., Chung, S.J., J.Cryst.Growth 148, 207 (1995).10.1016/0022-0248(94)00873-6
9. Lu, B.S., Wang, J., Pan, H.F. and Jiang, M.H., J.Chin.Synth.Cryst. 16, 195 (1987).

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed