非常感谢USTB版主帮我做了这次TEM实验,标定后也请教了USTB版主。感谢版主!
两张SAED图,左图经111方向旋转19.5度后得到右图,如果按照图中的标定,两张图可以自洽,可是图中的1/2位置的弱点不好解释,能不能解释成超晶格?
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晶体结构参数如下:
物质:(Bi0.7La0.3)FeO3
space group: C222
lattice parameters: a=5.5504,b=5.5498,c=3.949, 90,90,90,
以下是XRD图谱中出现的d值
H K L 2Theta/deg d/? I/rel.
__________ ___________ ________ ____________
0 0 1 22.497 3.949 50.66
1 1 0 22.639 3.92451 100
1 1 1 32.129 2.78367 95.21
2 0 0 32.23 2.7752 23.64
0 2 0 32.233 2.7749 23.64
2 0 1 39.663 2.27058 30.01
0 2 1 39.666 2.27042 30
0 0 2 45.924 1.9745 10.8
2 2 0 46.227 1.96226 21.28
1 1 2 51.789 1.76384 32.88
2 2 1 51.997 1.75727 32.58
3 1 0 52.064 1.75517 16.24
1 3 0 52.069 1.75502 16.24
2 0 2 57.213 1.60885 13.11
0 2 2 57.215 1.60879 13.11
3 1 1 57.406 1.60389 26.02
1 3 1 57.411 1.60377 26.01
2 2 2 67.207 1.39183 18.39
4 0 0 67.439 1.3876 4.56
0 4 0 67.448 1.38745 4.56
0 0 3 71.632 1.31633 4.04
3 1 2 71.917 1.31181 16.03
1 3 2 71.921 1.31175 16.02
4 0 1 72.088 1.30913 7.98
0 4 1 72.096 1.30901 7.97
3 3 0 72.149 1.30817 7.96
1 1 3 76.228 1.248 14.38