Nanoprecipitates in YBa2Cu3O7‐δ (YBCO) thin films have been identified by high resolution electron microscopy (HREM) as Y2O3 inclusions; they correspond to two different types of epitaxial relationships namely [001] or [110] parallel to the YBCO c‐axis. The [001] precipitates are situated near the YBCO surface, in the bulk and on the YBCO film/substrate interface. The [110] precipitates have only been observed at the surface. Literature data have been reinterpreted.

Topics
High temperature superconductors, Epitaxy, Thin films, High-resolution electron microscopy
1.
O.
Eibl
and
B.
Roas,
J. Mater. Res.
5
,
2620
(
1990
).
Google Scholar
 
2.
M. J.
Casanove,
A.
Alimoussa,
C.
Roucau,
C.
Escribe-Filippini,
P. L.
Reydet
, and
P.
Marcus,
Physica C
175
,
285
(
1991
).
Google Scholar
 
3.
A.
Catana,
J. G.
Bednorz,
Ch.
Gerber,
J. Mannhart
,
and
D. G.
Schlom,
Appl. Phys. Lett.
63
,
553
(
1993
).
Google Scholar
 
4.
A.
Catana,
R. F.
Broom,
J. G.
Bednorz,
J.
Mannhart
, and
D. G.
Schlom,
Appl. Phys. Lett.
60
,
1016
(
1992
).
Google Scholar
 
5.
T. I.
Selinder,
U.
Helmersson,
Z.
Han,
J.-E.
Sundgren,
H.
Sjöstöm
, and
L. R.
Wallenberg,
Physica C
202
,
69
(
1992
).
Google Scholar
 
6.
D. Dorignac, S. Schamm, C. Grigis, J. Sévely, J. Santiso, and A. Figueras, Physica C 235–240, 617 (1994).
7.
P.
Lu,
Q.
Li,
J.
Zhao,
C. S.
Chern,
B.
Gallois,
P.
Noris,
B.
Kear
, and
F.
Cosandey,
Appl. Phys. Lett.
60
,
1265
(
1992
).
Google Scholar
 
8.
V.
Matijasevic,
P.
Rosenthal,
K.
Shinohara,
A. F.
Marshall,
R. H.
Hammond
, and
M. R.
Beasley,
J. Mater. Res.
6
,
682
(
1991
).
Google Scholar
 
9.
Y. Yamane, S. Takagi, T. Oku, N. Ohnishi, K. Hiraga, S. Awaij, K. Watanabe, N. Kobayashi, and T. Hirai, J. Mater. Sci. Lett. 12, 1430 (1993).
10.
J. Ayache, R. Kilaas, S. Pachiornik, D. Nemeth, A. Thorel, and J. Clark, Proc. ICEM 993 (1994).
11.
T. I.
Selinder,
U.
Helmersson
, and
Z.
Han,
Thin Solid Films
229
,
273
(
1993
).
Google Scholar
 
12.
A. Vasiliev, G. Van Tendeloo, Yu. Boikov, E. Olsson, and Z. Ivanov, Physica C (to be published).
13.
K. Verbist, G. Van Tendeloo, Y. Min, M. Mehbod, and R. Deltour (unpublished).
14.
Yu. A. Boikov, Z. G. Ivanov, A. L. Vasiliev, and T. Cleason (unpublished).
15.
M. Ye, M. Mehdod, and R. Deltour, Physica B 204, 200 (1995).
16.
A.
Kühle,
J. L.
Skov,
S.
Hjorth,
I.
Rasmussen
, and
J.
Bindslev,
Appl. Phys. Lett.
64
,
3178
(
1994
).
Google Scholar
 
17.
D.
Bhatt,
S. N.
Basu,
A. C.
Westerheim
, and
A. C.
Anderson,
Physica C
222
,
283
(
1994
).
Google Scholar
 
This content is only available via PDF.
© 1995 American Institute of Physics.
1995
American Institute of Physics
You do not currently have access to this content.