Interface dependent magnetic moments in Cu/Co,Ni/Cu/Si(0 0 1) epitaxial structures

C. A F Vaz; G. Lauhoff; J. A C Bland; S. Langridge; D. G. Bucknall; J. Penfold; J. Clarke; S. K. Halder; B. K. Tanner

doi:10.1016/j.jmmm.2006.12.008

Interface dependent magnetic moments in Cu/Co,Ni/Cu/Si(0 0 1) epitaxial structures

C. A F Vaz^*, G. Lauhoff, J. A C Bland, S. Langridge, D. G. Bucknall, J. Penfold, J. Clarke, S. K. Halder, B. K. Tanner

^*Corresponding author for this work

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

9 Citations (Scopus)

Abstract

The effect of the interface on the magnetic moment of Cu/Co,Ni/Cu/Si(0 0 1) epitaxial structures was studied by polarised neutron reflection (PNR). The structure consists of a specially designed three-step sample (single 60 Å Ni and 10 Å Co films and a 10 Å Co/60 Å Ni bilayer) grown under the same conditions in order to eliminate variations in the magnetic properties that could result from different growth environments. Independent structural characterisation of the samples was also determined from grazing incidence X-ray scattering, therefore increasing the confidence of the PNR fits. High precision PNR measurements performed at room temperature up to a wavevector range of 0.05 Å^{- 1} yield values of 0.58 ± 0.03 μ_B and 0.59 ± 0.03 μ_B per Ni atom for the Ni/Cu(0 0 1) and Co/Ni/Cu(0 0 1) samples, respectively; for the Co layers, the moments per Co atom are 1.63 ± 0.13 μ_B and 1.68 ± 0.11 μ_B for the Co/Ni/Cu(0 0 1) and Co/Cu(0 0 1) samples, respectively. Our results show that there are no significant changes in the respective Co and Ni magnetic moments at the Co/Ni interface.

Original language	English
Pages (from-to)	89-97
Number of pages	9
Journal	Journal of Magnetism and Magnetic Materials
Volume	313
Issue number	1
DOIs	https://doi.org/10.1016/j.jmmm.2006.12.008
Publication status	Published - Jun 2007

Keywords

Co
Grazing incidence X-ray scattering
Magnetic moment
Ni
Polarised neutron reflection

ASJC Scopus subject areas

Condensed Matter Physics

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10.1016/j.jmmm.2006.12.008

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@article{6273122d06274f259d5fc1ed1af80a5e,

title = "Interface dependent magnetic moments in Cu/Co,Ni/Cu/Si(0 0 1) epitaxial structures",

abstract = "The effect of the interface on the magnetic moment of Cu/Co,Ni/Cu/Si(0 0 1) epitaxial structures was studied by polarised neutron reflection (PNR). The structure consists of a specially designed three-step sample (single 60 {\AA} Ni and 10 {\AA} Co films and a 10 {\AA} Co/60 {\AA} Ni bilayer) grown under the same conditions in order to eliminate variations in the magnetic properties that could result from different growth environments. Independent structural characterisation of the samples was also determined from grazing incidence X-ray scattering, therefore increasing the confidence of the PNR fits. High precision PNR measurements performed at room temperature up to a wavevector range of 0.05 {\AA}- 1 yield values of 0.58 ± 0.03 μB and 0.59 ± 0.03 μB per Ni atom for the Ni/Cu(0 0 1) and Co/Ni/Cu(0 0 1) samples, respectively; for the Co layers, the moments per Co atom are 1.63 ± 0.13 μB and 1.68 ± 0.11 μB for the Co/Ni/Cu(0 0 1) and Co/Cu(0 0 1) samples, respectively. Our results show that there are no significant changes in the respective Co and Ni magnetic moments at the Co/Ni interface.",

keywords = "Co, Grazing incidence X-ray scattering, Magnetic moment, Ni, Polarised neutron reflection",

author = "Vaz, {C. A F} and G. Lauhoff and Bland, {J. A C} and S. Langridge and Bucknall, {D. G.} and J. Penfold and J. Clarke and Halder, {S. K.} and Tanner, {B. K.}",

year = "2007",

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doi = "10.1016/j.jmmm.2006.12.008",

language = "English",

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T1 - Interface dependent magnetic moments in Cu/Co,Ni/Cu/Si(0 0 1) epitaxial structures

AU - Vaz, C. A F

AU - Lauhoff, G.

AU - Bland, J. A C

AU - Langridge, S.

AU - Bucknall, D. G.

AU - Penfold, J.

AU - Clarke, J.

AU - Halder, S. K.

AU - Tanner, B. K.

PY - 2007/6

Y1 - 2007/6

N2 - The effect of the interface on the magnetic moment of Cu/Co,Ni/Cu/Si(0 0 1) epitaxial structures was studied by polarised neutron reflection (PNR). The structure consists of a specially designed three-step sample (single 60 Å Ni and 10 Å Co films and a 10 Å Co/60 Å Ni bilayer) grown under the same conditions in order to eliminate variations in the magnetic properties that could result from different growth environments. Independent structural characterisation of the samples was also determined from grazing incidence X-ray scattering, therefore increasing the confidence of the PNR fits. High precision PNR measurements performed at room temperature up to a wavevector range of 0.05 Å- 1 yield values of 0.58 ± 0.03 μB and 0.59 ± 0.03 μB per Ni atom for the Ni/Cu(0 0 1) and Co/Ni/Cu(0 0 1) samples, respectively; for the Co layers, the moments per Co atom are 1.63 ± 0.13 μB and 1.68 ± 0.11 μB for the Co/Ni/Cu(0 0 1) and Co/Cu(0 0 1) samples, respectively. Our results show that there are no significant changes in the respective Co and Ni magnetic moments at the Co/Ni interface.

AB - The effect of the interface on the magnetic moment of Cu/Co,Ni/Cu/Si(0 0 1) epitaxial structures was studied by polarised neutron reflection (PNR). The structure consists of a specially designed three-step sample (single 60 Å Ni and 10 Å Co films and a 10 Å Co/60 Å Ni bilayer) grown under the same conditions in order to eliminate variations in the magnetic properties that could result from different growth environments. Independent structural characterisation of the samples was also determined from grazing incidence X-ray scattering, therefore increasing the confidence of the PNR fits. High precision PNR measurements performed at room temperature up to a wavevector range of 0.05 Å- 1 yield values of 0.58 ± 0.03 μB and 0.59 ± 0.03 μB per Ni atom for the Ni/Cu(0 0 1) and Co/Ni/Cu(0 0 1) samples, respectively; for the Co layers, the moments per Co atom are 1.63 ± 0.13 μB and 1.68 ± 0.11 μB for the Co/Ni/Cu(0 0 1) and Co/Cu(0 0 1) samples, respectively. Our results show that there are no significant changes in the respective Co and Ni magnetic moments at the Co/Ni interface.

KW - Co

KW - Grazing incidence X-ray scattering

KW - Magnetic moment

KW - Ni

KW - Polarised neutron reflection

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DO - 10.1016/j.jmmm.2006.12.008

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VL - 313

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JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

IS - 1

ER -

Interface dependent magnetic moments in Cu/Co,Ni/Cu/Si(0 0 1) epitaxial structures

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