High coercivity of ultra-high-density ordered Co nanorod arrays

T Shibauchi; L Krusin-Elbaum; L Gignac; C.t Black; T Thurn-Albrecht; T.p Russell; J Schotter; G.a Kästle; N Emley; M.t Tuominen

doi:10.1016/S0304-8853(00)00958-6

High coercivity of ultra-high-density ordered Co nanorod arrays

T Shibauchi, L Krusin-Elbaum, L Gignac, C.t Black, T Thurn-Albrecht, T.p Russell, J Schotter, G.a Kästle, N Emley, M.t Tuominen

Publikation: Beitrag in Fachzeitschrift › Artikel › Begutachtung

Abstract

We report on magnetic properties of well-ordered ultra-high density (1.25×1012/in2) arrays of vertically oriented high-aspect-ratio Co nanorods having a 14 nm diameter. The arrays were fabricated by electrodeposition within the pores of a nanoscale template derived from films of diblock copolymers. We find large coercivity enhancement (Hc≈3 kOe at 5 K and 800 Oe at 300 K) relative to a continuous Co film of comparable thickness. The high coercivity in our ordered arrays is contrasted with a distinct decrease of coercivity below ∼50 nm rod diameter in a randomly positioned nanorod assembly.

Originalsprache	Englisch
Seiten (von - bis)	1553-1554
Fachzeitschrift	Journal of Magnetism and Magnetic Materials
Jahrgang	226-230
DOIs	https://doi.org/10.1016/S0304-8853(00)00958-6
Publikationsstatus	Veröffentlicht - 1 Mai 2001
Extern publiziert	Ja

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10.1016/S0304-8853(00)00958-6

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title = "High coercivity of ultra-high-density ordered Co nanorod arrays",

abstract = "We report on magnetic properties of well-ordered ultra-high density (1.25×1012/in2) arrays of vertically oriented high-aspect-ratio Co nanorods having a 14 nm diameter. The arrays were fabricated by electrodeposition within the pores of a nanoscale template derived from films of diblock copolymers. We find large coercivity enhancement (Hc≈3 kOe at 5 K and 800 Oe at 300 K) relative to a continuous Co film of comparable thickness. The high coercivity in our ordered arrays is contrasted with a distinct decrease of coercivity below ∼50 nm rod diameter in a randomly positioned nanorod assembly.",

author = "T Shibauchi and L Krusin-Elbaum and L Gignac and C.t Black and T Thurn-Albrecht and T.p Russell and J Schotter and G.a K{\"a}stle and N Emley and M.t Tuominen",

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T1 - High coercivity of ultra-high-density ordered Co nanorod arrays

AU - Shibauchi, T

AU - Krusin-Elbaum, L

AU - Gignac, L

AU - Black, C.t

AU - Thurn-Albrecht, T

AU - Russell, T.p

AU - Schotter, J

AU - Kästle, G.a

AU - Emley, N

AU - Tuominen, M.t

PY - 2001/5/1

Y1 - 2001/5/1

N2 - We report on magnetic properties of well-ordered ultra-high density (1.25×1012/in2) arrays of vertically oriented high-aspect-ratio Co nanorods having a 14 nm diameter. The arrays were fabricated by electrodeposition within the pores of a nanoscale template derived from films of diblock copolymers. We find large coercivity enhancement (Hc≈3 kOe at 5 K and 800 Oe at 300 K) relative to a continuous Co film of comparable thickness. The high coercivity in our ordered arrays is contrasted with a distinct decrease of coercivity below ∼50 nm rod diameter in a randomly positioned nanorod assembly.

AB - We report on magnetic properties of well-ordered ultra-high density (1.25×1012/in2) arrays of vertically oriented high-aspect-ratio Co nanorods having a 14 nm diameter. The arrays were fabricated by electrodeposition within the pores of a nanoscale template derived from films of diblock copolymers. We find large coercivity enhancement (Hc≈3 kOe at 5 K and 800 Oe at 300 K) relative to a continuous Co film of comparable thickness. The high coercivity in our ordered arrays is contrasted with a distinct decrease of coercivity below ∼50 nm rod diameter in a randomly positioned nanorod assembly.

U2 - 10.1016/S0304-8853(00)00958-6

DO - 10.1016/S0304-8853(00)00958-6

M3 - Article

SN - 0304-8853

VL - 226-230

SP - 1553

EP - 1554

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

ER -

High coercivity of ultra-high-density ordered Co nanorod arrays

Abstract

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