Exchange-induced unidirectional anisotropy in trilayers consisting of a thin conductive ferromagnetic layer of La2/3Ca1/3(Sr1/3)MnO3 sandwiched between two antiferromagnetic layers of La1/3Ca2/3MnO3 has been demonstrated through studies of magnetization, magnetoresistance, and in-plane anisotropy of magnetoresistance. The structures were grown by ozone-assisted molecular beam epitaxy and were characterized by a number of techniques. The possibility for the development of exchange-biased magnetic tunnel junctions using these nonclassic double-exchange ferromagnets is discussed.

1.
W. H.
Meiklejohn
and
P. C.
Bean
,
Phys. Rev.
102
,
1413
(
1956
).
2.
B. H.
Miller
and
E. D.
Dahlberg
,
Appl. Phys. Lett.
69
,
3932
(
1996
).
3.
V.
Strom
,
B. J.
Johnson
,
K. V.
Rao
, and
E. D.
Dahlberg
,
J. Appl. Phys.
81
,
5003
(
1997
).
4.
C.
Tsang
and
R.
Fontana
,
IEEE Trans. Magn.
18
,
1149
(
1982
).
5.
B.
Dieny
,
V. S.
Speriosu
,
S. S. P.
Parkin
,
B. A.
Gurney
,
D. R.
Wilhoit
, and
D.
Mauri
,
Phys. Rev. B
43
,
1297
(
1991
);
B.
Dieny
,
J. Magn. Magn. Mater.
136
,
335
(
1994
).
6.
R.
von Helmolt
,
J.
Wecker
,
B.
Holzapfel
,
L.
Schultz
, and
K.
Samwer
,
Phys. Rev. Lett.
71
,
2331
(
1993
).
7.
K.
Chahara
,
T.
Ohno
,
M.
Kasai
, and
Y.
Kozono
,
Appl. Phys. Lett.
63
,
1990
(
1993
).
8.
M. T.
Fernandez-Diaz
,
J. L.
Martinez
,
J. M.
Alonso
, and
E.
Herrero
,
Phys. Rev. B
59
,
1277
(
1999
).
9.
I.
Panagiotopoulos
,
C.
Christides
,
M.
Pissas
, and
D.
Niarchos
,
Phys. Rev. B
60
,
485
(
1999
).
10.
A. P.
Ramirez
,
J. Phys.: Condens. Matter
9
,
8171
(
1997
).
11.
J.-P.
Locquet
,
A.
Catana
,
E.
Machler
,
C.
Gerber
, and
J. G.
Bednorz
,
Appl. Phys. Lett.
64
,
372
(
1994
).
12.
V. A.
Vas’ko
,
C. A.
Nordman
,
P. A.
Kraus
,
V. S.
Achutharaman
,
A. R.
Ruosi
, and
A. M.
Goldman
,
Appl. Phys. Lett.
68
,
2571
(
1996
).
13.
V. S.
Achutharaman
,
K. M.
Beauchamp
,
N.
Chandrasekhar
,
G. C.
Spalding
,
B. R.
Johnson
, and
A. M.
Goldman
,
Thin Solid Films
216
,
14
(
1992
).
14.
J. Z.
Sun
,
D. W.
Abraham
,
R. A.
Rao
, and
C. B.
Eom
,
Appl. Phys. Lett.
74
,
3017
(
1999
).
15.
C.
Kwon
,
K.-C.
Kim
,
M. C.
Robson
,
J. Y.
Gu
,
M.
Rajeswari
, and
T.
Venkatesan
,
J. Appl. Phys.
81
,
4950
(
1997
).
16.
J.
O’Donnell
,
M.
Onellion
,
M. S.
Rzchowski
,
J. H.
Eckstein
, and
I.
Bosovic
,
Phys. Rev. B
55
,
5873
(
1997
).
17.
I. N. Krivorotov, K. R. Nikolaev, E. Dan Dahlberg, and A. M. Goldman (unpublished).
18.
G. C.
Xiong
,
Q.
Li
,
H. L.
Ju
,
R. L.
Green
, and
T.
Venkatesan
,
Appl. Phys. Lett.
66
,
1689
(
1995
).
19.
S.
Jin
,
T. H.
Tiefel
,
M.
McCormack
,
H. M.
O’Bryan
,
L. H.
Chen
,
R.
Ramesh
, and
D.
Schurig
,
Appl. Phys. Lett.
67
,
557
(
1995
).
20.
J. Z.
Sun
,
L.
Krusin-Elbaum
,
P. R.
Ducombe
,
A.
Gupta
, and
R. B.
Laibowitz
,
Appl. Phys. Lett.
70
,
1769
(
1997
).
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