PLD-fabricated Fe-Co films prepared by using small spot size of laser beam

Author

Yamashita, A. ; Nakano, M. ; Yanai, T. ; Fukunaga, H.

Author_Institution

Nagasaki Univ., Nagasaki, Japan

fYear

2015

fDate

11-15 May 2015

Firstpage

1

Lastpage

1

Abstract

In order to apply Fe-Co films with high saturation magnetization to a recording head together with a nano-composite film magnet, a lot of researchers demonstrated the deposition of Fe-Co films by using several methods such as a sputtering together with an electro-deposition. This contribution reports the preparation of Fe-Co films by using a PLD (Pulsed Laser Deposition) method. We focused on the relationship between various properties and a spot size of laser beam. It was clarified that a small spot size with the diameter less than 1 mm, which means that a laser beam was focused on the surface of a target, enabled us to decrease the numbers of droplets and improve the surface roughness of samples. We also confirmed that a Fe₇₁Co₂₉ film with the magnetization of approximately 2.4 T at the applied magnetic field of 1400 kA/m could be obtained by using the small spot size.

Keywords

cobalt alloys; iron alloys; magnetic thin films; magnetisation; metallic thin films; pulsed laser deposition; surface roughness; Fe₇₁Co₂₉; PLD-fabricated films; droplet numbers; laser beam spot size; magnetic field; pulsed laser deposition; saturation magnetization; surface roughness; Laser beams; Magnetic films; Rough surfaces; Saturation magnetization; Surface morphology; Surface roughness;

fLanguage

English

Publisher

ieee

Conference_Titel

Magnetics Conference (INTERMAG), 2015 IEEE

Conference_Location

Beijing

Print_ISBN

978-1-4799-7321-7

Type

conf

DOI

10.1109/INTMAG.2015.7157534

Filename

7157534