单位:Å

(100)R

(010)R

(001)R

斜切0˚

4.5491

4.5614

2.8510

斜切1˚

4.5458

4.5504

2.8518

斜切3˚

4.5407

4.5552

2.8502

粉体

4.5546

4.5546

2.8514