Annealing effect on interlayer exchange coupling in perpendicularly magnetized synthetic antiferromagnetic structure based on Co/Pd multilayers with ultrathin Ru spacer

Takafumi Nakano; Mikihiko Oogane; Yasuo Ando

doi:10.7567/JJAP.57.073001

Annealing effect on interlayer exchange coupling in perpendicularly magnetized synthetic antiferromagnetic structure based on Co/Pd multilayers with ultrathin Ru spacer

Takafumi Nakano, Mikihiko Oogane, Yasuo Ando

ENG - Applied Physics

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

Perpendicularly magnetized synthetic antiferromagnetic (p-SAF) structures exhibiting large exchange field (H_ex) values have been widely studied for application to spintronic devices. We investigated magnetic properties of p-SAF structures based on Co/Pd multilayers with an ultrathin Ru spacer at various annealing temperatures (T_a). The [Co/Pd]-based p-SAF structures exhibited large H_ex values of the order of kOe up to T_a = 350 °C. We clarified that H_ex in the p-SAF structures significantly degrades with increasing T_a mainly owing to a marked reduction in exchange coupling energy (J_ex). These results demonstrate that [Co/Pd]-based p-SAF structures exhibit sufficiently large H_ex values for device applications and that the annealing stability is predominantly determined by J_ex.

Original language	English
Article number	073001
Journal	Japanese Journal of Applied Physics
Volume	57
Issue number	7
DOIs	https://doi.org/10.7567/JJAP.57.073001
Publication status	Published - 2018 Jul

Access to Document

10.7567/JJAP.57.073001

Cite this

@article{5bbfeee967704e3b86b46ee4f75f7b39,

title = "Annealing effect on interlayer exchange coupling in perpendicularly magnetized synthetic antiferromagnetic structure based on Co/Pd multilayers with ultrathin Ru spacer",

abstract = "Perpendicularly magnetized synthetic antiferromagnetic (p-SAF) structures exhibiting large exchange field (Hex) values have been widely studied for application to spintronic devices. We investigated magnetic properties of p-SAF structures based on Co/Pd multilayers with an ultrathin Ru spacer at various annealing temperatures (Ta). The [Co/Pd]-based p-SAF structures exhibited large Hex values of the order of kOe up to Ta = 350 °C. We clarified that Hex in the p-SAF structures significantly degrades with increasing Ta mainly owing to a marked reduction in exchange coupling energy (Jex). These results demonstrate that [Co/Pd]-based p-SAF structures exhibit sufficiently large Hex values for device applications and that the annealing stability is predominantly determined by Jex.",

author = "Takafumi Nakano and Mikihiko Oogane and Yasuo Ando",

note = "Funding Information: This work was supported in part by the Center for Innovative Integrated Electronic Systems and JSPS KAKENHI Grant Numbers JP24226001 and JP16J01812. The authors would like to thank R. Abe, K. Ao, and T. Furuichi of DENSO Corporation for useful discussion and M. Kubota of Tohoku University for assistance in the measurements. Publisher Copyright: {\textcopyright} 2018 The Japan Society of Applied Physics.",

year = "2018",

month = jul,

doi = "10.7567/JJAP.57.073001",

language = "English",

volume = "57",

journal = "Japanese Journal of Applied Physics",

issn = "0021-4922",

publisher = "Japan Society of Applied Physics",

number = "7",

}

TY - JOUR

T1 - Annealing effect on interlayer exchange coupling in perpendicularly magnetized synthetic antiferromagnetic structure based on Co/Pd multilayers with ultrathin Ru spacer

AU - Nakano, Takafumi

AU - Oogane, Mikihiko

AU - Ando, Yasuo

N1 - Funding Information: This work was supported in part by the Center for Innovative Integrated Electronic Systems and JSPS KAKENHI Grant Numbers JP24226001 and JP16J01812. The authors would like to thank R. Abe, K. Ao, and T. Furuichi of DENSO Corporation for useful discussion and M. Kubota of Tohoku University for assistance in the measurements. Publisher Copyright: © 2018 The Japan Society of Applied Physics.

PY - 2018/7

Y1 - 2018/7

N2 - Perpendicularly magnetized synthetic antiferromagnetic (p-SAF) structures exhibiting large exchange field (Hex) values have been widely studied for application to spintronic devices. We investigated magnetic properties of p-SAF structures based on Co/Pd multilayers with an ultrathin Ru spacer at various annealing temperatures (Ta). The [Co/Pd]-based p-SAF structures exhibited large Hex values of the order of kOe up to Ta = 350 °C. We clarified that Hex in the p-SAF structures significantly degrades with increasing Ta mainly owing to a marked reduction in exchange coupling energy (Jex). These results demonstrate that [Co/Pd]-based p-SAF structures exhibit sufficiently large Hex values for device applications and that the annealing stability is predominantly determined by Jex.

AB - Perpendicularly magnetized synthetic antiferromagnetic (p-SAF) structures exhibiting large exchange field (Hex) values have been widely studied for application to spintronic devices. We investigated magnetic properties of p-SAF structures based on Co/Pd multilayers with an ultrathin Ru spacer at various annealing temperatures (Ta). The [Co/Pd]-based p-SAF structures exhibited large Hex values of the order of kOe up to Ta = 350 °C. We clarified that Hex in the p-SAF structures significantly degrades with increasing Ta mainly owing to a marked reduction in exchange coupling energy (Jex). These results demonstrate that [Co/Pd]-based p-SAF structures exhibit sufficiently large Hex values for device applications and that the annealing stability is predominantly determined by Jex.

UR - http://www.scopus.com/inward/record.url?scp=85049392784&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85049392784&partnerID=8YFLogxK

U2 - 10.7567/JJAP.57.073001

DO - 10.7567/JJAP.57.073001

M3 - Article

AN - SCOPUS:85049392784

SN - 0021-4922

VL - 57

JO - Japanese Journal of Applied Physics

JF - Japanese Journal of Applied Physics

IS - 7

M1 - 073001

ER -

Annealing effect on interlayer exchange coupling in perpendicularly magnetized synthetic antiferromagnetic structure based on Co/Pd multilayers with ultrathin Ru spacer

Abstract

Access to Document

Other files and links

Fingerprint

Cite this