TY - JOUR
T1 - Reversal mechanism and suppression of training in an exchange-coupled system
AU - Paul, Amitesh
AU - Schneider, Claus M.
AU - Stahn, Jochen
N1 - Copyright:
Copyright 2007 Elsevier B.V., All rights reserved.
PY - 2007/11/20
Y1 - 2007/11/20
N2 - We show that the extent of training in exchange-biased systems can be strongly influenced by the field cooling procedure. This phenomenon is revealed by comparing the behavior of the system in two different magnetic configurations: cooling the system in a remanent state without an external magnetic field (state I) results in a suppression of the training effect, whereas the same sample being field cooled (state II) exhibits a clear training response. Interestingly, by cooling the sample in a critical field HFC close to the coercive field HC of the ferromagnet, we find a peculiar situation with a coexistence of states I and II. By using a depth-sensitive polarized neutron reflectivity technique, we can establish a clear correlation of the reversal mechanism with either the untrained or trained state.
AB - We show that the extent of training in exchange-biased systems can be strongly influenced by the field cooling procedure. This phenomenon is revealed by comparing the behavior of the system in two different magnetic configurations: cooling the system in a remanent state without an external magnetic field (state I) results in a suppression of the training effect, whereas the same sample being field cooled (state II) exhibits a clear training response. Interestingly, by cooling the sample in a critical field HFC close to the coercive field HC of the ferromagnet, we find a peculiar situation with a coexistence of states I and II. By using a depth-sensitive polarized neutron reflectivity technique, we can establish a clear correlation of the reversal mechanism with either the untrained or trained state.
UR - http://www.scopus.com/inward/record.url?scp=36348976243&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.76.184424
DO - 10.1103/PhysRevB.76.184424
M3 - 文章
AN - SCOPUS:36348976243
VL - 76
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
SN - 1098-0121
IS - 18
M1 - 184424
ER -