Abstract
Dislocation constraint in the growth of SiC crystal by the modified Lely method was studied. In SiC single crystal growth, the dislocations and defects generally propagate from the seed crystal surface. However, when the etch back on the seed crystal surface in the sublimation process was performed prior to growth, defects and dislocation propagation in the interface between the seed crystal and the grown crystal were suppressed reasonably. The switchover from the etch back to the growth could be performed without changing heating condition during the initial process. We noticed that the density of the hollow defects called as micropipes in the grown crystal were decreased to 1/10 compared to that of the seed crystal used. We consider the etch back process of the seed crystal as an effective method for constraining the defects in the SiC crystal growth.
| Original language | English |
|---|---|
| Pages (from-to) | 219-225 |
| Number of pages | 7 |
| Journal | Journal of Crystal Growth |
| Volume | 233 |
| Issue number | 1-2 |
| DOIs | |
| Publication status | Published - Nov 1 2001 |
| Externally published | Yes |
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All Science Journal Classification (ASJC) codes
- Condensed Matter Physics
- Inorganic Chemistry
- Materials Chemistry
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Dislocation constraint by etch back process of seed crystal in the SiC sublimation growth. / Kato, Tomohisa; Nishizawa, Shinichi; Arai, Kazuo.
In: Journal of Crystal Growth, Vol. 233, No. 1-2, 01.11.2001, p. 219-225.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Dislocation constraint by etch back process of seed crystal in the SiC sublimation growth
AU - Kato, Tomohisa
AU - Nishizawa, Shinichi
AU - Arai, Kazuo
PY - 2001/11/1
Y1 - 2001/11/1
N2 - Dislocation constraint in the growth of SiC crystal by the modified Lely method was studied. In SiC single crystal growth, the dislocations and defects generally propagate from the seed crystal surface. However, when the etch back on the seed crystal surface in the sublimation process was performed prior to growth, defects and dislocation propagation in the interface between the seed crystal and the grown crystal were suppressed reasonably. The switchover from the etch back to the growth could be performed without changing heating condition during the initial process. We noticed that the density of the hollow defects called as micropipes in the grown crystal were decreased to 1/10 compared to that of the seed crystal used. We consider the etch back process of the seed crystal as an effective method for constraining the defects in the SiC crystal growth.
AB - Dislocation constraint in the growth of SiC crystal by the modified Lely method was studied. In SiC single crystal growth, the dislocations and defects generally propagate from the seed crystal surface. However, when the etch back on the seed crystal surface in the sublimation process was performed prior to growth, defects and dislocation propagation in the interface between the seed crystal and the grown crystal were suppressed reasonably. The switchover from the etch back to the growth could be performed without changing heating condition during the initial process. We noticed that the density of the hollow defects called as micropipes in the grown crystal were decreased to 1/10 compared to that of the seed crystal used. We consider the etch back process of the seed crystal as an effective method for constraining the defects in the SiC crystal growth.
UR - http://www.scopus.com/inward/record.url?scp=0035501987&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0035501987&partnerID=8YFLogxK
U2 - 10.1016/S0022-0248(01)01578-0
DO - 10.1016/S0022-0248(01)01578-0
M3 - Article
AN - SCOPUS:0035501987
VL - 233
SP - 219
EP - 225
JO - Journal of Crystal Growth
JF - Journal of Crystal Growth
SN - 0022-0248
IS - 1-2
ER -