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In-Situ Magnetic Field Induced Structure and Properties of Epitaxial Spinel Ferrite Thin Films Prepared by Pulsed Laser Deposition (PLD) (Dynamic Aurora PLD Method)

Published online by Cambridge University Press:  01 February 2011

Naoki Wakiya ,
Toyokazu Nagamune ,
Kazuo Shinozaki  and
Nobuyasu Mizutani
Naoki Wakiya
Affiliation:
Department of Metallurgy and Ceramics Science, Graduate School of Science and Engineering, Tokyo Institute of Technology, 2–12–1–S7–6 O-okayama, Meguro-ku, Tokyo 152–8550, Japan
Toyokazu Nagamune
Affiliation:
Department of Metallurgy and Ceramics Science, Graduate School of Science and Engineering, Tokyo Institute of Technology, 2–12–1–S7–6 O-okayama, Meguro-ku, Tokyo 152–8550, Japan
Kazuo Shinozaki
Affiliation:
Department of Metallurgy and Ceramics Science, Graduate School of Science and Engineering, Tokyo Institute of Technology, 2–12–1–S7–6 O-okayama, Meguro-ku, Tokyo 152–8550, Japan
Nobuyasu Mizutani
Affiliation:
Department of Metallurgy and Ceramics Science, Graduate School of Science and Engineering, Tokyo Institute of Technology, 2–12–1–S7–6 O-okayama, Meguro-ku, Tokyo 152–8550, Japan
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Abstract

The influence of an in-situ magnetic field on the plume during pulsed laser deposition (PLD) to prepare epitaxial nickel zinc ferrite (NZF) thin films were investigated. An air core coil (solenoid coil) was installed between a target and a substrate, and up to 43 mT of magnetic field was generated by direct current (DC)(Dynamic Aurora PLD method). Application of magnetic field brought about following structural and property changes;

(1) deposition rate was almost doubled, (2) the concentration of Ni and Zn in the film was decreased, (3) lattice parameter was unchanged, and (4) magnetization and coercivity was increased. Since deposition rate was increased by application of magnetic field, films with same thickness was also prepared without magnetic field, however, magnetic properties were unchanged. This indicates that application of in-situ magnetic field improved magnetic properties.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 853: Symposium I – Fabrication and New Applications of Nanomagnetic Structures , 2004 , I4.34
Copyright
Copyright © Materials Research Society 2005

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References

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