Skip to main content
main-content

Tipp

Weitere Artikel dieser Ausgabe durch Wischen aufrufen

Erschienen in: Physics of Metals and Metallography 9/2019

01.09.2019 | ELECTRICAL AND MAGNETIC PROPERTIES

Magnetoresistance of CoFeNi/Cu Superlattices Differing in the Ferromagnetic Alloy Composition

verfasst von: M. A. Milyaev, N. S. Bannikova, L. I. Naumova, V. V. Proglyado, E. I. Patrakov, I. Yu. Kamenskii, V. V. Ustinov

Erschienen in: Physics of Metals and Metallography | Ausgabe 9/2019

Einloggen, um Zugang zu erhalten
share
TEILEN

Abstract

Abstract—The structure and magnetoresistive properties of Ta(5 nm)/NiFeCr(5 nm)/[FM(tFM)/Cu(2.2 nm)]n/ Ta(5 nm) superlattices prepared by magnetron sputtering are studied in this work. The ferromagnetic layer thickness tFM is varied in a 1.1–1.5 nm range. The Co90Fe10, Co85Fe12Ni3, Co77Fe17Ni6, and Co70Fe20Ni10 alloys with an fcc structure and close saturation magnetization values are used as the ferromagnetic (FM) materials. It is shown that, as the Ni and Fe contents in the CoFeNi alloy increase, the magnetoresistance of superlattices containing eight bilayers remains high and equal to 24–28%; in this case, the twofold decrease in the hysteresis occurs. As the number of bilayers in the superlattices, which contain CoFeNi alloys differing in composition increases to 12, the close values of magnetoresistance 30–31% are obtained. The correlation between the saturation magnetization of the ferromagnetic material of superlattice layers and maximum value of magnetoresistance is discussed.
Literatur
1.
Zurück zum Zitat M. R. Parker, S. Hossain, D. Seale, J. A. Barnard, M. Tan, and H. Fujiwara, “Low-field giant magnetoresistance in Co/Cu, CoFe/Cu and CoNiFe/Cu multilayer systems,” IEEE Trans. Magn. 30, 358–363 (1994). CrossRef M. R. Parker, S. Hossain, D. Seale, J. A. Barnard, M. Tan, and H. Fujiwara, “Low-field giant magnetoresistance in Co/Cu, CoFe/Cu and CoNiFe/Cu multilayer systems,” IEEE Trans. Magn. 30, 358–363 (1994). CrossRef
2.
Zurück zum Zitat M. Jimbo, S. Tsunashima, T. Kanda, S. Goto, and S. Uchiyama, “Giant magnetoresistance in soft magnetic NiFeCo/Cu multilayers,” J. Appl. Phys. 74, 3341–3344 (1993). CrossRef M. Jimbo, S. Tsunashima, T. Kanda, S. Goto, and S. Uchiyama, “Giant magnetoresistance in soft magnetic NiFeCo/Cu multilayers,” J. Appl. Phys. 74, 3341–3344 (1993). CrossRef
3.
Zurück zum Zitat K. Meguro, S. Hirano, M. Jimbo, S. Tsunashima, and S. Uchiyama, “Composition dependence magnetoresistance effect in NiFeCo/Cu multilayers,” J. Magn. Magn. Mater. 140–144, 601–602 (1995). K. Meguro, S. Hirano, M. Jimbo, S. Tsunashima, and S. Uchiyama, “Composition dependence magnetoresistance effect in NiFeCo/Cu multilayers,” J. Magn. Magn. Mater. 140–144, 601–602 (1995).
4.
Zurück zum Zitat S. Hossain, D. Seale, G. Qiu, J. Jarratt, J. A. Barnard, H. Fujiwara, and M. R. Parker, “Hysteresis reduction in NiFeCo/Cu multilayers exhibiting large low-field giant magnetoresistance,” J. Appl. Phys. 75, 7067–7069 (1994). CrossRef S. Hossain, D. Seale, G. Qiu, J. Jarratt, J. A. Barnard, H. Fujiwara, and M. R. Parker, “Hysteresis reduction in NiFeCo/Cu multilayers exhibiting large low-field giant magnetoresistance,” J. Appl. Phys. 75, 7067–7069 (1994). CrossRef
5.
Zurück zum Zitat D. M. Mtalsi, M. E. Harfaoui, A. Qachaou, M. Faris, J. B. Youssef, and H. L. Gall, “Magnetic layer composition effect on giant magnetoresistance in (NiFeCo/Cu) multilayers,” Phys. Status Solidi A 187, 633–640 (2001). CrossRef D. M. Mtalsi, M. E. Harfaoui, A. Qachaou, M. Faris, J. B. Youssef, and H. L. Gall, “Magnetic layer composition effect on giant magnetoresistance in (NiFeCo/Cu) multilayers,” Phys. Status Solidi A 187, 633–640 (2001). CrossRef
6.
Zurück zum Zitat N. S. Bannikova, M. A. Milyaev, L. I. Naumova, T. P. Krinitsina, E. I. Patrakov, V. V. Proglyado, T. A. Chernyshova, and V. V. Ustinov, “NiFeCo/Cu superlattices with high magnetoresistive sensitivity and weak hysteresis,” Phys. Solid State 58, 2011–2017 (2016). CrossRef N. S. Bannikova, M. A. Milyaev, L. I. Naumova, T. P. Krinitsina, E. I. Patrakov, V. V. Proglyado, T. A. Chernyshova, and V. V. Ustinov, “NiFeCo/Cu superlattices with high magnetoresistive sensitivity and weak hysteresis,” Phys. Solid State 58, 2011–2017 (2016). CrossRef
7.
Zurück zum Zitat C. H. Marrows, N. Wiser, B. J. Hickey, T. P. A. Hase, and B. K. Tanner, “Giant magnetoresistance and oscillatory exchange coupling in disordered Co/Cu multilayers,” J. Phys.: Condens. Matter. 11, 81–88 (1999). C. H. Marrows, N. Wiser, B. J. Hickey, T. P. A. Hase, and B. K. Tanner, “Giant magnetoresistance and oscillatory exchange coupling in disordered Co/Cu multilayers,” J. Phys.: Condens. Matter. 11, 81–88 (1999).
8.
Zurück zum Zitat S. S. P. Parkin, A. Modak, and D. J. Smith, “Dependence of giant magnetoresistance on Cu-layer thickness in Co/Cu multilayers: A simple dilution effect,” Phys. Rev. B 47, 9136–9139 (1993). CrossRef S. S. P. Parkin, A. Modak, and D. J. Smith, “Dependence of giant magnetoresistance on Cu-layer thickness in Co/Cu multilayers: A simple dilution effect,” Phys. Rev. B 47, 9136–9139 (1993). CrossRef
9.
Zurück zum Zitat D. Rafaja, J. Ebert, G. Miehe, N. Martz, M. Knapp, B. Stahl, M. Ghafari, H. Hahn, H. Fuess, P. Schmollngruber, P. Farber, and H. Siegle, “Changes in the real structure and magnetoresistance of Co 90Fe 10/Cu and Co 90Fe 10/Cu 85Ag 10Au 5 multilayers after annealing,” Thin Solid Films 460, 256–263 (2004). CrossRef D. Rafaja, J. Ebert, G. Miehe, N. Martz, M. Knapp, B. Stahl, M. Ghafari, H. Hahn, H. Fuess, P. Schmollngruber, P. Farber, and H. Siegle, “Changes in the real structure and magnetoresistance of Co 90Fe 10/Cu and Co 90Fe 10/Cu 85Ag 10Au 5 multilayers after annealing,” Thin Solid Films 460, 256–263 (2004). CrossRef
10.
Zurück zum Zitat N. S. Bannikova, M. A. Milyaev, L. I. Naumova, V. V. Proglyado, T. P. Krinitsina, I. Yu. Kamenskii, and V. V. Ustinov, “Giant magnetoresistance of CoFe/Cu superlattices with the (Ni 80Fe 20) 60Cr 40 buffer layer,” Phys. Met. Metallogr. 116, 987–992 (2015). CrossRef N. S. Bannikova, M. A. Milyaev, L. I. Naumova, V. V. Proglyado, T. P. Krinitsina, I. Yu. Kamenskii, and V. V. Ustinov, “Giant magnetoresistance of CoFe/Cu superlattices with the (Ni 80Fe 20) 60Cr 40 buffer layer,” Phys. Met. Metallogr. 116, 987–992 (2015). CrossRef
11.
Zurück zum Zitat H. Fukuzawa, H. Iwasaki, K. Koi, and M. Sahashi, “Soft magnetic characteristics of an ultrathin CoFeNi free layer in spin-valve films,” J. Magn. Magn. Mater. 298, 65–71 (2006). CrossRef H. Fukuzawa, H. Iwasaki, K. Koi, and M. Sahashi, “Soft magnetic characteristics of an ultrathin CoFeNi free layer in spin-valve films,” J. Magn. Magn. Mater. 298, 65–71 (2006). CrossRef
12.
Zurück zum Zitat G. Scheunert, O. Heinonen, R. Hardeman, A. Lapicki, M. Gubbins, and R. M. Bowman, “A review of high magnetic moment thin films for microscale and nanotechnology applications,” Appl. Phys. Rev. 3, 011301 (2016). CrossRef G. Scheunert, O. Heinonen, R. Hardeman, A. Lapicki, M. Gubbins, and R. M. Bowman, “A review of high magnetic moment thin films for microscale and nanotechnology applications,” Appl. Phys. Rev. 3, 011301 (2016). CrossRef
13.
Zurück zum Zitat M. A. Milyaev, L. I. Naumova, V. V. Proglyado, T. P. Krinitsina, A. M. Burkhanov, N. S. Bannikova, and V. V. Ustinov, “Giant changes in magnetic and magnetoresistive properties of CoFe/Cu multilayers at subnanosized variations in the thickness of the chromium buffer layer,” Phys. Met. Metallogr. 112, 138–145 (2011). CrossRef M. A. Milyaev, L. I. Naumova, V. V. Proglyado, T. P. Krinitsina, A. M. Burkhanov, N. S. Bannikova, and V. V. Ustinov, “Giant changes in magnetic and magnetoresistive properties of CoFe/Cu multilayers at subnanosized variations in the thickness of the chromium buffer layer,” Phys. Met. Metallogr. 112, 138–145 (2011). CrossRef
14.
Zurück zum Zitat V. V. Ustinov, M. A. Milyaev, and L. I. Naumova, “Giant magnetoresistance of metallic exchange-coupled multilayers and spin valves,” Phy. Met. Metallogr. 118, 1300–1359 (2017). CrossRef V. V. Ustinov, M. A. Milyaev, and L. I. Naumova, “Giant magnetoresistance of metallic exchange-coupled multilayers and spin valves,” Phy. Met. Metallogr. 118, 1300–1359 (2017). CrossRef
15.
Zurück zum Zitat N. S. Bannikova, M. A. Milyaev, L. I. Naumova, E. I. Patrakov, V. V. Proglyado, I. Yu. Kamenskii, M. V. Ryabukhina, and V. V. Ustinov, “Giant magnetoresistance and hysteresis phenomena in cofe/cu superlattices with highly perfect crystallographic texture,” Phys. Met. Metallogr. 119, 1132–1137 (2018). CrossRef N. S. Bannikova, M. A. Milyaev, L. I. Naumova, E. I. Patrakov, V. V. Proglyado, I. Yu. Kamenskii, M. V. Ryabukhina, and V. V. Ustinov, “Giant magnetoresistance and hysteresis phenomena in cofe/cu superlattices with highly perfect crystallographic texture,” Phys. Met. Metallogr. 119, 1132–1137 (2018). CrossRef
16.
Zurück zum Zitat Handbook of Spintronics, Ed. by Y. Hu et al. (Springer, New York, 2016). Handbook of Spintronics, Ed. by Y. Hu et al. (Springer, New York, 2016).
17.
Zurück zum Zitat T. Miyazaki, J. Kondo, H. Kubota, and J. Inoue, “Comparison Between Giant Magnetoresistance in Fe-Co-Ni/Cu Multilayers and Anisotropic Magnetoresistance in the Ternary Alloys,” J. Appl. Phys. 81, 5187–5189 (1997). CrossRef T. Miyazaki, J. Kondo, H. Kubota, and J. Inoue, “Comparison Between Giant Magnetoresistance in Fe-Co-Ni/Cu Multilayers and Anisotropic Magnetoresistance in the Ternary Alloys,” J. Appl. Phys. 81, 5187–5189 (1997). CrossRef
18.
Zurück zum Zitat T. Kanda, M. Jimbo, S. Tsunashima, S. Goto, M. Kumazawa, and S. Uchiyama, “Giant magnetoresistance in NiFeCo/Cu multilayers,” IEEE Transl. J. on Magnetics in Japan 9, 103–109 (1994). T. Kanda, M. Jimbo, S. Tsunashima, S. Goto, M. Kumazawa, and S. Uchiyama, “Giant magnetoresistance in NiFeCo/Cu multilayers,” IEEE Transl. J. on Magnetics in Japan 9, 103–109 (1994).
19.
Zurück zum Zitat Z. D. Diao, S. Goto, K. Meguro, S. Hirano, and M. Jimbo, “Role of the buffer layers in determining the antiferromagnetic coupling and magnetoresistance of NiFeCo/Cu superlattices,” J. Appl. Phys. 81, 2327–2335 (1997). CrossRef Z. D. Diao, S. Goto, K. Meguro, S. Hirano, and M. Jimbo, “Role of the buffer layers in determining the antiferromagnetic coupling and magnetoresistance of NiFeCo/Cu superlattices,” J. Appl. Phys. 81, 2327–2335 (1997). CrossRef
Metadaten
Titel
Magnetoresistance of CoFeNi/Cu Superlattices Differing in the Ferromagnetic Alloy Composition
verfasst von
M. A. Milyaev
N. S. Bannikova
L. I. Naumova
V. V. Proglyado
E. I. Patrakov
I. Yu. Kamenskii
V. V. Ustinov
Publikationsdatum
01.09.2019
Verlag
Pleiades Publishing
Erschienen in
Physics of Metals and Metallography / Ausgabe 9/2019
Print ISSN: 0031-918X
Elektronische ISSN: 1555-6190
DOI
https://doi.org/10.1134/S0031918X19090084

Weitere Artikel der Ausgabe 9/2019

Physics of Metals and Metallography 9/2019 Zur Ausgabe