Structure, composition and enhanced magnetic properties of novel ternary multicore-shell Ni–Co–Cr nanoclusters prepared by one-step inert gas condensation method

Saja Al Khabouri; Salim Al Harthi; Toru Maekawa; Mohamed E Elzain; Htet Htet Kyaw; Myo Tay Zar Myint; Karthik Laxman

doi:10.1016/j.matchemphys.2021.124858

Structure, composition and enhanced magnetic properties of novel ternary multicore-shell Ni–Co–Cr nanoclusters prepared by one-step inert gas condensation method

Saja Al Khabouri, Salim Al Harthi, Toru Maekawa, Mohamed E Elzain, Htet Htet Kyaw, Myo Tay Zar Myint, Karthik Laxman

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

1 Citation (Scopus)

Abstract

We have synthesized ternary Ni–Co–Cr nanoclusters using one step method by simultaneous sputtering of metallic targets through inert gas condensation (IGC) deposition process. The difference in surface energy between the component atoms creates a preferential surface phase leading to the formation of multi core/shell structures. Surface structure and composition analysis reveal metallic and oxide phases characterized by extraordinary 1.43 μm periodicity strong magnetic stripe domains with weak magnetic force microscopy signal attenuation up to a lift height value of 2.5 μm. In addition, the ternary nanoclusters exhibit strong ferromagnetic behavior below the blocking temperature of 139 K with coercivity of 700 Oe at 4 K. The enhanced magnetic properties are attributed to Volmer-Weber growth mechanism and pave a facile way for preparing ternary core/shell magnetic structures needed for applications which require strong magnetic anisotropy along their growth direction.

Original language	English
Article number	124858
Pages (from-to)	124858
Number of pages	1
Journal	Materials Chemistry and Physics
Volume	271
DOIs	https://doi.org/10.1016/j.matchemphys.2021.124858
Publication status	Published - Oct 1 2021

Keywords

Core/shell
Ferromagnetic
Inert gas condensation
Magnetic
Nanoclusters

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics

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10.1016/j.matchemphys.2021.124858

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Al Khabouri, S., Al Harthi, S., Maekawa, T., Elzain, M. E., Kyaw, H. H., Myint, M. T. Z., & Laxman, K. (2021). Structure, composition and enhanced magnetic properties of novel ternary multicore-shell Ni–Co–Cr nanoclusters prepared by one-step inert gas condensation method. Materials Chemistry and Physics, 271, 124858. Article 124858. https://doi.org/10.1016/j.matchemphys.2021.124858

Structure, composition and enhanced magnetic properties of novel ternary multicore-shell Ni–Co–Cr nanoclusters prepared by one-step inert gas condensation method. / Al Khabouri, Saja; Al Harthi, Salim; Maekawa, Toru et al.
In: Materials Chemistry and Physics, Vol. 271, 124858, 01.10.2021, p. 124858.

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

Al Khabouri, S, Al Harthi, S, Maekawa, T, Elzain, ME, Kyaw, HH , Myint, MTZ & Laxman, K 2021, 'Structure, composition and enhanced magnetic properties of novel ternary multicore-shell Ni–Co–Cr nanoclusters prepared by one-step inert gas condensation method', Materials Chemistry and Physics, vol. 271, 124858, pp. 124858. https://doi.org/10.1016/j.matchemphys.2021.124858

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abstract = "We have synthesized ternary Ni–Co–Cr nanoclusters using one step method by simultaneous sputtering of metallic targets through inert gas condensation (IGC) deposition process. The difference in surface energy between the component atoms creates a preferential surface phase leading to the formation of multi core/shell structures. Surface structure and composition analysis reveal metallic and oxide phases characterized by extraordinary 1.43 μm periodicity strong magnetic stripe domains with weak magnetic force microscopy signal attenuation up to a lift height value of 2.5 μm. In addition, the ternary nanoclusters exhibit strong ferromagnetic behavior below the blocking temperature of 139 K with coercivity of 700 Oe at 4 K. The enhanced magnetic properties are attributed to Volmer-Weber growth mechanism and pave a facile way for preparing ternary core/shell magnetic structures needed for applications which require strong magnetic anisotropy along their growth direction.",

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author = "{Al Khabouri}, Saja and {Al Harthi}, Salim and Toru Maekawa and Elzain, {Mohamed E} and Kyaw, {Htet Htet} and Myint, {Myo Tay Zar} and Karthik Laxman",

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AU - Al Khabouri, Saja

AU - Al Harthi, Salim

AU - Maekawa, Toru

AU - Elzain, Mohamed E

AU - Kyaw, Htet Htet

AU - Myint, Myo Tay Zar

AU - Laxman, Karthik

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N2 - We have synthesized ternary Ni–Co–Cr nanoclusters using one step method by simultaneous sputtering of metallic targets through inert gas condensation (IGC) deposition process. The difference in surface energy between the component atoms creates a preferential surface phase leading to the formation of multi core/shell structures. Surface structure and composition analysis reveal metallic and oxide phases characterized by extraordinary 1.43 μm periodicity strong magnetic stripe domains with weak magnetic force microscopy signal attenuation up to a lift height value of 2.5 μm. In addition, the ternary nanoclusters exhibit strong ferromagnetic behavior below the blocking temperature of 139 K with coercivity of 700 Oe at 4 K. The enhanced magnetic properties are attributed to Volmer-Weber growth mechanism and pave a facile way for preparing ternary core/shell magnetic structures needed for applications which require strong magnetic anisotropy along their growth direction.

AB - We have synthesized ternary Ni–Co–Cr nanoclusters using one step method by simultaneous sputtering of metallic targets through inert gas condensation (IGC) deposition process. The difference in surface energy between the component atoms creates a preferential surface phase leading to the formation of multi core/shell structures. Surface structure and composition analysis reveal metallic and oxide phases characterized by extraordinary 1.43 μm periodicity strong magnetic stripe domains with weak magnetic force microscopy signal attenuation up to a lift height value of 2.5 μm. In addition, the ternary nanoclusters exhibit strong ferromagnetic behavior below the blocking temperature of 139 K with coercivity of 700 Oe at 4 K. The enhanced magnetic properties are attributed to Volmer-Weber growth mechanism and pave a facile way for preparing ternary core/shell magnetic structures needed for applications which require strong magnetic anisotropy along their growth direction.

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KW - Ferromagnetic

KW - Inert gas condensation

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Structure, composition and enhanced magnetic properties of novel ternary multicore-shell Ni–Co–Cr nanoclusters prepared by one-step inert gas condensation method

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