A space‐group theoretical approach has been applied to the high Tc superconducting oxide YBa2Cu3O7−δ (δ∼0.3) to explain the occurrence of coherent domain boundaries. This method quantitatively accounts for the transmission electron microscopy (TEM) observations of {110} twin boundaries in the room‐temperature orthorhombic phase. The possible nature of the relaxation of these twin boundaries and the atomic arrangement at these boundaries are briefly discussed.
REFERENCES
1.
S. Amelinckx and J. van Landuyt, Electron Microscopy in Mineralogy, 68, edited by H.‐R. Wenk (Springer, Berlin, 1978).
2.
3.
4.
M.
Guymont
, D.
Gratias
, R.
Portier
, and M.
Fayard
, Phys. Status Solidi
38
, 629
(1976
).5.
G.
van Tendeloo
and S.
Amelinckx
, Acta Crystallogr. A
30
, 431
(1974
).6.
R.
Beyers
, G.
Lim
, E. M.
Engler
, and R. J.
Savoy
, Appl. Phys. Lett.
50
, 1918
(1987
).7.
8.
9.
International Tables for Crystallography (Reidel, Boston, 1983).
10.
11.
12.
G. R.
Barach
, B.
Horovitz
, and J. A.
Krumhansl
, Phy. Rev. Lett.
59
, 1251
(1987
).
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© 1988 American Institute of Physics.
1988
American Institute of Physics
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