Use of Pd and Pt buffers to induce soft magnetic properties in Fe 70Co30 thin films

C. L. Platt; J. K. Howard; David Smith

doi:10.1016/S0304-8853(03)00594-8

Use of Pd and Pt buffers to induce soft magnetic properties in Fe ₇₀Co₃₀ thin films

C. L. Platt, J. K. Howard, David Smith

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

12 Scopus citations

Abstract

The influence of thin Pd and Pt buffers on the magnetic and structural properties of high moment Fe₇₀Co₃₀ thin films has been studied. A 50nm thick FeCo film with no buffer showed isotropic magnetic characteristics and a coercivity of 40Oe. Use of the Pd or Pt buffer reduced the coercivity of 50nm FeCo films to about 15Oe with more defined uniaxial properties. Reduction in the average FeCo grain size and clearly defined columnar grain boundaries were observed in these films. When the FeCo film thickness was increased to 200nm, the FeCo no longer exhibited soft magnetic properties, regardless of the buffer material. A large increase in average column width was also observed in the 200nm thick film.

Original language	English (US)
Pages (from-to)	212-216
Number of pages	5
Journal	Journal of Magnetism and Magnetic Materials
Volume	269
Issue number	2
DOIs	https://doi.org/10.1016/S0304-8853(03)00594-8
State	Published - Feb 2004

Keywords

FeCo
High moment
Soft materials
Thin film head
Writer

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Access to Document

10.1016/S0304-8853(03)00594-8

Cite this

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abstract = "The influence of thin Pd and Pt buffers on the magnetic and structural properties of high moment Fe70Co30 thin films has been studied. A 50nm thick FeCo film with no buffer showed isotropic magnetic characteristics and a coercivity of 40Oe. Use of the Pd or Pt buffer reduced the coercivity of 50nm FeCo films to about 15Oe with more defined uniaxial properties. Reduction in the average FeCo grain size and clearly defined columnar grain boundaries were observed in these films. When the FeCo film thickness was increased to 200nm, the FeCo no longer exhibited soft magnetic properties, regardless of the buffer material. A large increase in average column width was also observed in the 200nm thick film.",

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AB - The influence of thin Pd and Pt buffers on the magnetic and structural properties of high moment Fe70Co30 thin films has been studied. A 50nm thick FeCo film with no buffer showed isotropic magnetic characteristics and a coercivity of 40Oe. Use of the Pd or Pt buffer reduced the coercivity of 50nm FeCo films to about 15Oe with more defined uniaxial properties. Reduction in the average FeCo grain size and clearly defined columnar grain boundaries were observed in these films. When the FeCo film thickness was increased to 200nm, the FeCo no longer exhibited soft magnetic properties, regardless of the buffer material. A large increase in average column width was also observed in the 200nm thick film.

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