TY - JOUR
T1 - Influence of the thickness of the ferro- and antiferromagnetic phases on magnetic properties in epitaxial heterostructures based on exchange biased La-Ca-Mn-O system
AU - Gomez, Maria E.
AU - Campillo, Gloria E.
AU - Diez, Sandra
AU - Hoffmann, Axel
AU - Lopera, Wilson
PY - 2013/8/8
Y1 - 2013/8/8
N2 - Metal oxides show fascinating physical properties such as ferromagnetism, antiferromagnetism, high temperature superconductivity, ferroelectricity, or even multiferroicity. For many possible electronic applications as well as fundamental studies, it is essential to fabricate epitaxial layered films and multilayers of these materials having complex lattice structures with sharp interfaces, preserving epitaxiallity through the whole structure. We have grown these kind of oxide heterostructures on single crystal (001) oriented SrTiO3substrates by using an in-situ DC sputtering technique at high oxygen pressures. Specifically, we report the study of magnetic and transport properties in ferromagnetic/antiferromagnetic, F/AF, heterostructures based on the Ca-doped lanthanum manganite system. We artificially grew La2/3Ca1/3MnO3/La1/3Ca2/3MnO3heterostructures, maintaining constant the total thickness of the sample and systematically varying the thicknesses of the antiferromagnetic layer (tAF) and ferromagnetic layer (tF). Magnetization measurements indicate a dependence of Curie temperature, exchange bias field, and magnetoresistance behavior with the tAF/tFratio. © 1965-2012 IEEE.
AB - Metal oxides show fascinating physical properties such as ferromagnetism, antiferromagnetism, high temperature superconductivity, ferroelectricity, or even multiferroicity. For many possible electronic applications as well as fundamental studies, it is essential to fabricate epitaxial layered films and multilayers of these materials having complex lattice structures with sharp interfaces, preserving epitaxiallity through the whole structure. We have grown these kind of oxide heterostructures on single crystal (001) oriented SrTiO3substrates by using an in-situ DC sputtering technique at high oxygen pressures. Specifically, we report the study of magnetic and transport properties in ferromagnetic/antiferromagnetic, F/AF, heterostructures based on the Ca-doped lanthanum manganite system. We artificially grew La2/3Ca1/3MnO3/La1/3Ca2/3MnO3heterostructures, maintaining constant the total thickness of the sample and systematically varying the thicknesses of the antiferromagnetic layer (tAF) and ferromagnetic layer (tF). Magnetization measurements indicate a dependence of Curie temperature, exchange bias field, and magnetoresistance behavior with the tAF/tFratio. © 1965-2012 IEEE.
U2 - 10.1109/TMAG.2013.2257711
DO - 10.1109/TMAG.2013.2257711
M3 - Article
VL - 49
SP - 4576
EP - 4581
JO - IEEE Transactions on Magnetics
JF - IEEE Transactions on Magnetics
SN - 0018-9464
IS - 8
ER -