Pulse rise time dependence of switching field of Co/Pt multilayer dot

Nobuaki Kikuchi; Yoshihiro Suyama; Satoshi Okamoto; Osamu Kitakami

doi:10.1541/ieejfms.132.838

Pulse rise time dependence of switching field of Co/Pt multilayer dot

Nobuaki Kikuchi, Yoshihiro Suyama, Satoshi Okamoto, Osamu Kitakami

Division of Inorganic Material Research

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

2 Citations (Scopus)

Abstract

A voltage pulse generator for magnetic field application was built using a coaxial cable as a capacitor. The pulse duration was fixed to 10 ns and the pulse field rise time was controlled from 70 ps to 4 ns using a low pass filters. Magnetization switching experiments have been carried out on a Co/Pt multilayer dot with diameter of 300 nm using perpendicular pulse fields. The required pulse field amplitude for magnetization switching is independent of the pulse rise time suggesting the thermally activated process is dominant in the perpendicular field geometry.

Original language	English
Pages (from-to)	838-843
Number of pages	6
Journal	IEEJ Transactions on Fundamentals and Materials
Volume	132
Issue number	10
DOIs	https://doi.org/10.1541/ieejfms.132.838
Publication status	Published - 2012

Keywords

Magnetization dynamics
Pulse field

ASJC Scopus subject areas

Electrical and Electronic Engineering

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10.1541/ieejfms.132.838

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abstract = "A voltage pulse generator for magnetic field application was built using a coaxial cable as a capacitor. The pulse duration was fixed to 10 ns and the pulse field rise time was controlled from 70 ps to 4 ns using a low pass filters. Magnetization switching experiments have been carried out on a Co/Pt multilayer dot with diameter of 300 nm using perpendicular pulse fields. The required pulse field amplitude for magnetization switching is independent of the pulse rise time suggesting the thermally activated process is dominant in the perpendicular field geometry.",

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AU - Suyama, Yoshihiro

AU - Okamoto, Satoshi

AU - Kitakami, Osamu

PY - 2012

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AB - A voltage pulse generator for magnetic field application was built using a coaxial cable as a capacitor. The pulse duration was fixed to 10 ns and the pulse field rise time was controlled from 70 ps to 4 ns using a low pass filters. Magnetization switching experiments have been carried out on a Co/Pt multilayer dot with diameter of 300 nm using perpendicular pulse fields. The required pulse field amplitude for magnetization switching is independent of the pulse rise time suggesting the thermally activated process is dominant in the perpendicular field geometry.

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KW - Pulse field

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Pulse rise time dependence of switching field of Co/Pt multilayer dot

Abstract

Keywords

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