Long Period Polytypes in Silicon Carbide

The sandwich model acronyms are:

OS =open, DFS = doubly filled, ACS =American club, SS =simple, AS =asymmetric.

Crystal number

Polytype neighbour

Long period polytype repeat

Polytype neighbour (other side)

LPP (m m)

Model

J1

6H

1DD (270m m)

78H/234R

*24H/72R

1DD (270m m)/LPP*

-

20

200

ACS

J26

6H

152H/456R

6H

12.5

ACS

J31

4H

24H/72R

1DD (1225m m)/6H

260

DFS

J33

15R

78H/234R

1DD (70m m)/6H

50

DFS

J34

6H

201H/603R

6H

20

AS

J40

4H

106H/318R

1DD (145m m)/15R

15

DFS

J43

6H

24H/72R

6H

300

SS

J48

6H

342H/1026R

-

20

ACS

J59

6H

146H/438R

1DD (300m m)

10

OS

J64

6H

42H/126R

1DD (15m m)/6H

15

DFS

J101

6H

24H/72R

6H

70

ACS

J105

4H

201H/603R

1DD (270m m)/15R

20

ACS

J108/G31

6H

80H/240R

6H

20

ACS

J110/G158

6H

130H/390R

1DD (30m m)/8H

5

ACS

J113/G104

6H

1DD (40m m)

64H/192R

*40H/120R

1DD (40m m)/LPP*

-

20

150

ACS

J115/G185

6H

474H/1422R

1DD (270m m)

7.5

OS

J123/G111

6H

66H/198R

15R

50

ACS

J126/G39

6H

24H/72R

1DD (20m m)

90

OS

J128/G122

6H/1DD (110m m)

106H/318R

-

25

OS

J129/G159

6H

27H/81R

1DD (280m m)

70

OS

J131/G117

6H

72H/216R

8H

20

ACS

J133/G88

15R

289H/867R

1DD (320m m)/15R

30

ACS

J135/G163

6H

106H/318R

1DD (1380m m)

20

OS

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