Hostname: page-component-78c5997874-4rdpn Total loading time: 0 Render date: 2024-11-19T04:28:41.909Z Has data issue: false hasContentIssue false
  • English
  • Français

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

Published online by Cambridge University Press:  10 February 2011

X.B. Hu ,
J.Y. Wang ,
M. Guo ,
S.R. Zhao ,
B. Gong ,
J.Q. Wei  and
Y.G. Liu
X.B. Hu
Affiliation:
State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, P.R.China, E-mail: [email protected]
J.Y. Wang
Affiliation:
State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, P.R.China, E-mail: [email protected]
M. Guo
Affiliation:
State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, P.R.China, E-mail: [email protected]
S.R. Zhao
Affiliation:
State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, P.R.China, E-mail: [email protected]
B. Gong
Affiliation:
State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, P.R.China, E-mail: [email protected]
J.Q. Wei
Affiliation:
State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, P.R.China, E-mail: [email protected]
Y.G. Liu
Affiliation:
State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, P.R.China, E-mail: [email protected]
Get access

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.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 590: Symposium R – Applications of Synchrotron Radiation Techniques…V , 1999 , 297
Copyright
Copyright © Materials Research Society 2000

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1. Luo, Z.D., Jiang, A.D., Huang, Y.C. and Qiu, M.W., Chin. Phys. Lett. 6, 440 (1989).Google Scholar
2. Dorozhkin, L.M., Kuratev, I.I., Leonyuk, N.I., Timchenko, T.I. and Shestakov, A.V., Soviet Tech. Phys. Lett. 7, 1297 (1981).Google Scholar
3. Omastsu, T., Kato, Y., Shimosegawa, M., Optics Communications 118, 302 (1995).10.1016/0030-4018(95)00208-PGoogle Scholar
4. Lu, B.S., Wang, J., Pan, H.F. and Jiang, M.H., J.Appl.Phys. 66, 6052 (1989).10.1063/1.343583Google Scholar
5. Iwai, M., Mori, Y., Sasaki, T., Nakai, S. and Sarukura, N., Jpn.J.Appl.Phys. 34, 2338 (1995).10.1143/JJAP.34.2338Google Scholar
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.Google Scholar
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-YGoogle Scholar
8. Jung, S.T., Choi, D.Y., Kang, J.K., Chung, S.J., J.Cryst.Growth 148, 207 (1995).10.1016/0022-0248(94)00873-6Google Scholar
9. Lu, B.S., Wang, J., Pan, H.F. and Jiang, M.H., J.Chin.Synth.Cryst. 16, 195 (1987).Google Scholar