University of Minnesota
School of Physics & Astronomy
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Publications

E. Dan Dahlberg

Exchange-biased La/sub 2/3/Ca/sub 1/3/(Sr/sub 1/3/)MnO/sub 3/ ultrathin films
K. R. Nikolaev, I. N. Krivorotov, W. K. Cooley, A. Bhattaoharya, E. D. Dahlberg, A. M. Goldman , Appl. Phys. Lett. 76 478 (2000)

Abstract

Exchange-induced unidirectional anisotropy in trilayers consisting of a thin conductive ferromagnetic layer of La/sub 2/3/Ca/sub 1/3/(Sr/sub 1/3/)MnO/sub 3/ sandwiched between two antiferromagnetic layers of La/sub 1/3/Ca/sub 2/3/MnO/sub 3/ 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. (20 References).