Influence of film roughness on the soft magnetic properties of Fe/Ni multilayers

Zhi Yuan Luo; Jia Tang; Bin Ma; Zong Zhi Zhang; Qing Yuan Jin; Jian Ping Wang

doi:10.1088/0256-307X/29/12/127501

Influence of film roughness on the soft magnetic properties of Fe/Ni multilayers

Zhi Yuan Luo, Jia Tang, Bin Ma, Zong Zhi Zhang, Qing Yuan Jin, Jian Ping Wang

Electrical and Computer Engineering

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18 Scopus citations

Abstract

The influence of surface/interface roughness on the magnetic properties of Fe/Ni multilayers is investigated. Two methods are employed to tune the film roughness: one varies the substrate temperature, and the other pre-deposits a Ag underlayer on the MgO substrate. For films with higher roughness, a marked rise in coercivity is observed. Three factors are discussed to be mainly responsible for the coercivity rise, involving the formation of pinholes, the reduction of exchange coupling between Fe and Ni layers, and Fe-Ni alloying at interfaces.

Original language	English (US)
Journal	Chinese Physics Letters
Volume	29
Issue number	12
DOIs	https://doi.org/10.1088/0256-307X/29/12/127501
State	Published - Dec 2012

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abstract = "The influence of surface/interface roughness on the magnetic properties of Fe/Ni multilayers is investigated. Two methods are employed to tune the film roughness: one varies the substrate temperature, and the other pre-deposits a Ag underlayer on the MgO substrate. For films with higher roughness, a marked rise in coercivity is observed. Three factors are discussed to be mainly responsible for the coercivity rise, involving the formation of pinholes, the reduction of exchange coupling between Fe and Ni layers, and Fe-Ni alloying at interfaces.",

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AU - Luo, Zhi Yuan

AU - Tang, Jia

AU - Ma, Bin

AU - Zhang, Zong Zhi

AU - Jin, Qing Yuan

AU - Wang, Jian Ping

PY - 2012/12

Y1 - 2012/12

N2 - The influence of surface/interface roughness on the magnetic properties of Fe/Ni multilayers is investigated. Two methods are employed to tune the film roughness: one varies the substrate temperature, and the other pre-deposits a Ag underlayer on the MgO substrate. For films with higher roughness, a marked rise in coercivity is observed. Three factors are discussed to be mainly responsible for the coercivity rise, involving the formation of pinholes, the reduction of exchange coupling between Fe and Ni layers, and Fe-Ni alloying at interfaces.

AB - The influence of surface/interface roughness on the magnetic properties of Fe/Ni multilayers is investigated. Two methods are employed to tune the film roughness: one varies the substrate temperature, and the other pre-deposits a Ag underlayer on the MgO substrate. For films with higher roughness, a marked rise in coercivity is observed. Three factors are discussed to be mainly responsible for the coercivity rise, involving the formation of pinholes, the reduction of exchange coupling between Fe and Ni layers, and Fe-Ni alloying at interfaces.

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SN - 0256-307X

VL - 29

JO - Chinese Physics Letters

JF - Chinese Physics Letters

IS - 12

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Influence of film roughness on the soft magnetic properties of Fe/Ni multilayers

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