Lattice distortion and magnetic anisotropy of FeCo-Ti-N thin films

Takanori Kawahara; Masashi Matsuura; Nobuki Tezuka; Satoshi Sugimoto

doi:10.1541/ieejfms.136.804

Lattice distortion and magnetic anisotropy of FeCo-Ti-N thin films

Takanori Kawahara, Masashi Matsuura, Nobuki Tezuka, Satoshi Sugimoto

ENG - Materials Science

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

Abstract

The magnetic properties and the microstructure of Rh(001)/FeCo-Ti-N thin film, which showed uniaxial magnetic anisotropy were investigated. Uniaxial magnetic anisotropy constant (K_u) was calculated as 0.98 MJm^-3 in the film with the thickness of 23 nm, and the c/a was estimated to 1.08. The analysis of Fast Fourier Transform (FFT) patterns taken from HR-TEM image showed that the c/a of the FeCo-Ti-N film reached to 1.12 at the interface of Rh/FeCo-Ti-N layers, and it decreased with increasing distance from the interface. These results indicate that the lattice strain induced at the Rh/FeCo-Ti-N interface could increase K_u.

Original language	English
Pages (from-to)	804-811
Number of pages	8
Journal	IEEJ Transactions on Fundamentals and Materials
Volume	136
Issue number	12
DOIs	https://doi.org/10.1541/ieejfms.136.804
Publication status	Published - 2016 Jan 1

Keywords

FeCo-Ti-N anisotropic thin films
Magnetic anisotropy constant
Rh underlayer
c/a

ASJC Scopus subject areas

Electrical and Electronic Engineering

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10.1541/ieejfms.136.804

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title = "Lattice distortion and magnetic anisotropy of FeCo-Ti-N thin films",

abstract = "The magnetic properties and the microstructure of Rh(001)/FeCo-Ti-N thin film, which showed uniaxial magnetic anisotropy were investigated. Uniaxial magnetic anisotropy constant (Ku) was calculated as 0.98 MJm-3 in the film with the thickness of 23 nm, and the c/a was estimated to 1.08. The analysis of Fast Fourier Transform (FFT) patterns taken from HR-TEM image showed that the c/a of the FeCo-Ti-N film reached to 1.12 at the interface of Rh/FeCo-Ti-N layers, and it decreased with increasing distance from the interface. These results indicate that the lattice strain induced at the Rh/FeCo-Ti-N interface could increase Ku.",

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author = "Takanori Kawahara and Masashi Matsuura and Nobuki Tezuka and Satoshi Sugimoto",

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T1 - Lattice distortion and magnetic anisotropy of FeCo-Ti-N thin films

AU - Kawahara, Takanori

AU - Matsuura, Masashi

AU - Tezuka, Nobuki

AU - Sugimoto, Satoshi

PY - 2016/1/1

Y1 - 2016/1/1

N2 - The magnetic properties and the microstructure of Rh(001)/FeCo-Ti-N thin film, which showed uniaxial magnetic anisotropy were investigated. Uniaxial magnetic anisotropy constant (Ku) was calculated as 0.98 MJm-3 in the film with the thickness of 23 nm, and the c/a was estimated to 1.08. The analysis of Fast Fourier Transform (FFT) patterns taken from HR-TEM image showed that the c/a of the FeCo-Ti-N film reached to 1.12 at the interface of Rh/FeCo-Ti-N layers, and it decreased with increasing distance from the interface. These results indicate that the lattice strain induced at the Rh/FeCo-Ti-N interface could increase Ku.

AB - The magnetic properties and the microstructure of Rh(001)/FeCo-Ti-N thin film, which showed uniaxial magnetic anisotropy were investigated. Uniaxial magnetic anisotropy constant (Ku) was calculated as 0.98 MJm-3 in the film with the thickness of 23 nm, and the c/a was estimated to 1.08. The analysis of Fast Fourier Transform (FFT) patterns taken from HR-TEM image showed that the c/a of the FeCo-Ti-N film reached to 1.12 at the interface of Rh/FeCo-Ti-N layers, and it decreased with increasing distance from the interface. These results indicate that the lattice strain induced at the Rh/FeCo-Ti-N interface could increase Ku.

KW - FeCo-Ti-N anisotropic thin films

KW - Magnetic anisotropy constant

KW - Rh underlayer

KW - c/a

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Lattice distortion and magnetic anisotropy of FeCo-Ti-N thin films

Abstract

Keywords

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