Magnetic and magnetoelastic properties of thin films by pulsed laser deposition

Author

Hayes, J.P. ; Stone, L.A. ; Snelling, H.V. ; Jenner, A.G. ; Greenough, R.D.

Author_Institution

Dept. of Appl. Phys., Hull Univ., UK

Volume

33

Issue

5

fYear

1997

fDate

9/1/1997 12:00:00 AM

Firstpage

3613

Lastpage

3615

Abstract

Pulsed laser deposition (PLD) has been used to fabricate thin films (Fe, Fe_0.9Zr_0.1, TbFe₂, DyFe₂ and Tb_0.3Dy_0.7Fe_1.95) from a variety of magnetic materials that have potential for sensor and microactuator applications. The magnetic and magnetoelastic responses of these films have been studied to assess the influence of growth parameters such as incident laser fluence (Jcm^-2) on such behaviour. Magnetic characterisation and magnetostriction measurements were made by VSM and capacitance dilatometry respectively. In all the magnetic systems studied, no obvious trend was shown between fluence and magnetisation or coercivity. Room temperature in-plane magnetostrictions of ~800 ppm have been measured from thin films (~200 nm) of the Terfenol-D composition (Tb_0.3Dy_0.7Fe_1.95) Laser post production processing has been evaluated on the Fe-Zr alloy system and the results point to the ability to tailor the magnetic response of a film for a specific application

Keywords

coercive force; dysprosium alloys; ferromagnetic materials; iron; iron alloys; magnetic sensors; magnetic thin films; magnetisation; magnetoelastic effects; magnetostriction; pulsed laser deposition; terbium alloys; zirconium alloys; 200 nm; DyFe₂; Fe; Fe-Zr; Fe-Zr alloy system; Fe_0.9Zr_0.1; Tb_0.3Dy_0.7Fe_1.95; TbFe₂; Terfenol-D composition; VSM; capacitance dilatometry; coercivity; fluence; growth parameters; incident laser fluence; laser post production processing; magnetic characterisation; magnetic materials; magnetic properties; magnetic response; magnetisation; magnetoelastic properties; magnetostriction; microactuator application; pulsed laser deposition; room temperature in-plane magnetostrictions; sensor application; thin films; Iron; Magnetic films; Magnetic properties; Magnetosphere; Magnetostriction; Optical pulses; Pulsed laser deposition; Sputtering; Thin film sensors; Zirconium;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.619514

Filename

619514