TY - JOUR
T1 - Correlation between the exchange bias and the degree of ordering of antiferromagnetic layer in PtMn/Co-Fe bilayers
AU - Sato, Takashi
AU - Tsunoda, Masakiyo
AU - Takahashi, Migaku
PY - 2002/2
Y1 - 2002/2
N2 - Correlation between the unidirectional anisotropy constant, JK, and the degree of ordering of PtMn layer was investigated for Pt55Mn45/Co90Fe10 bilayer, as a function of the annealing time and the PtMn layer thickness, dAF. As a result, we found the linear relations between JK and the degree of ordering, fFCT·S, in the cases of the bilayers with dAF = 5-50 nm. From the extrapolation of the linear relations to fFCT·S = 1, meaning the perfect ordering of PtMn layer, we obtained the attainable value of JK and the intrinsic critical thickness of the PtMn layer to be 0.26 erg/cm2 and 6 nm, respectively.
AB - Correlation between the unidirectional anisotropy constant, JK, and the degree of ordering of PtMn layer was investigated for Pt55Mn45/Co90Fe10 bilayer, as a function of the annealing time and the PtMn layer thickness, dAF. As a result, we found the linear relations between JK and the degree of ordering, fFCT·S, in the cases of the bilayers with dAF = 5-50 nm. From the extrapolation of the linear relations to fFCT·S = 1, meaning the perfect ordering of PtMn layer, we obtained the attainable value of JK and the intrinsic critical thickness of the PtMn layer to be 0.26 erg/cm2 and 6 nm, respectively.
KW - Degree of order
KW - Exchange anisotropy
KW - GID
KW - Order alloy
KW - Spin valve
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U2 - 10.1016/S0304-8853(01)00827-7
DO - 10.1016/S0304-8853(01)00827-7
M3 - Article
AN - SCOPUS:0036465030
SN - 0304-8853
VL - 240
SP - 277
EP - 279
JO - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
IS - 1-3
ER -