Abstract
A series of static calculations based on the Landau-Lifschitz-Gilbert equation incorporating a single-domain multilayer model applied on synthetic antiferrimagnet (SyAF) based spin-valve structures was carried out to investigate their giant magnetoresistive (GMR) transfer behaviors. The typical multilayer structure comprises NiFe (3.2)/CoFe (1.6)/Cu (2.8)/CoFe (P2, 3.0)/Ru (0.7)/CoFe (P1, 1.5)/IrMn (9.0) (in nm). Four fitting parameters were obtained from the comparisons between the calculated and experimental results: (i) the indirect exchange coupling energy (J1) between P1 and P2 layers=-1.5erg/cm2, (ii) the exchange biasing energy between P1 and IrMn layer (Jeb)=0.13erg/cm2, (iii) the relative GMR contribution (R) due to the angular difference of magnetizations in CoFe (P2)/Ru/CoFe (P1) trilayers=3%, and (iv) the induced uniaxial anisotropy value (Hua) of CoFe layers=40Oe. These values appear reasonable and are within the range of those reported in the literatures, indicating that the present single-domain model works well. In order to examine how these parameters affect the MR transfer curve, one of these parameters was systematically varied while the rest were fixed. J1 was found to be mainly related with the saturation field (Hs) and the field at which the maximum sub-peak MR ratio (Hsub). Jeb influenced on the effective exchange field (Hex.eff). It was also observed that R increases the total MR ratio, but the MR transfer curve was less affected by Hua.
| Original language | English |
|---|---|
| Pages (from-to) | 25-31 |
| Number of pages | 7 |
| Journal | Journal of Magnetism and Magnetic Materials |
| Volume | 250 |
| DOIs | |
| Publication status | Published - 2002 Sep 1 |
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Keywords
- CoFe/Ru/CoFe
- Computer simulation
- Giant magnetoresistance
- Spin-valve
- Synthetic antiferromagnet
ASJC Scopus subject areas
- Condensed Matter Physics
Cite this
Parametric sensitivity analysis on the giant magnetoresistive characteristics of synthetic antiferromagnet-based spin-valves. / Park, Jeong Suk; Lee, Seong Rae; Kim, Young-geun; Lim, Sang Ho.
In: Journal of Magnetism and Magnetic Materials, Vol. 250, 01.09.2002, p. 25-31.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Parametric sensitivity analysis on the giant magnetoresistive characteristics of synthetic antiferromagnet-based spin-valves
AU - Park, Jeong Suk
AU - Lee, Seong Rae
AU - Kim, Young-geun
AU - Lim, Sang Ho
PY - 2002/9/1
Y1 - 2002/9/1
N2 - A series of static calculations based on the Landau-Lifschitz-Gilbert equation incorporating a single-domain multilayer model applied on synthetic antiferrimagnet (SyAF) based spin-valve structures was carried out to investigate their giant magnetoresistive (GMR) transfer behaviors. The typical multilayer structure comprises NiFe (3.2)/CoFe (1.6)/Cu (2.8)/CoFe (P2, 3.0)/Ru (0.7)/CoFe (P1, 1.5)/IrMn (9.0) (in nm). Four fitting parameters were obtained from the comparisons between the calculated and experimental results: (i) the indirect exchange coupling energy (J1) between P1 and P2 layers=-1.5erg/cm2, (ii) the exchange biasing energy between P1 and IrMn layer (Jeb)=0.13erg/cm2, (iii) the relative GMR contribution (R) due to the angular difference of magnetizations in CoFe (P2)/Ru/CoFe (P1) trilayers=3%, and (iv) the induced uniaxial anisotropy value (Hua) of CoFe layers=40Oe. These values appear reasonable and are within the range of those reported in the literatures, indicating that the present single-domain model works well. In order to examine how these parameters affect the MR transfer curve, one of these parameters was systematically varied while the rest were fixed. J1 was found to be mainly related with the saturation field (Hs) and the field at which the maximum sub-peak MR ratio (Hsub). Jeb influenced on the effective exchange field (Hex.eff). It was also observed that R increases the total MR ratio, but the MR transfer curve was less affected by Hua.
AB - A series of static calculations based on the Landau-Lifschitz-Gilbert equation incorporating a single-domain multilayer model applied on synthetic antiferrimagnet (SyAF) based spin-valve structures was carried out to investigate their giant magnetoresistive (GMR) transfer behaviors. The typical multilayer structure comprises NiFe (3.2)/CoFe (1.6)/Cu (2.8)/CoFe (P2, 3.0)/Ru (0.7)/CoFe (P1, 1.5)/IrMn (9.0) (in nm). Four fitting parameters were obtained from the comparisons between the calculated and experimental results: (i) the indirect exchange coupling energy (J1) between P1 and P2 layers=-1.5erg/cm2, (ii) the exchange biasing energy between P1 and IrMn layer (Jeb)=0.13erg/cm2, (iii) the relative GMR contribution (R) due to the angular difference of magnetizations in CoFe (P2)/Ru/CoFe (P1) trilayers=3%, and (iv) the induced uniaxial anisotropy value (Hua) of CoFe layers=40Oe. These values appear reasonable and are within the range of those reported in the literatures, indicating that the present single-domain model works well. In order to examine how these parameters affect the MR transfer curve, one of these parameters was systematically varied while the rest were fixed. J1 was found to be mainly related with the saturation field (Hs) and the field at which the maximum sub-peak MR ratio (Hsub). Jeb influenced on the effective exchange field (Hex.eff). It was also observed that R increases the total MR ratio, but the MR transfer curve was less affected by Hua.
KW - CoFe/Ru/CoFe
KW - Computer simulation
KW - Giant magnetoresistance
KW - Spin-valve
KW - Synthetic antiferromagnet
UR - http://www.scopus.com/inward/record.url?scp=0036750705&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0036750705&partnerID=8YFLogxK
U2 - 10.1016/S0304-8853(02)00408-0
DO - 10.1016/S0304-8853(02)00408-0
M3 - Article
VL - 250
SP - 25
EP - 31
JO - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
SN - 0304-8853
ER -