Magnetostriction Measurements of L10 Fe50Pt(50-x)Pdx Thin Films

Weiyang Li, Weinan Zhou, Philip Lenox, Takeshi Seki, Koki Takanashi, Albrecht Jander, Pallavi Dhagat

Research output: Contribution to journalArticle

Abstract

This paper reports, for the first time, the measurement of magnetostriction in Fe50Pt(50-x)Pdx thin films with varying Pd content. L10-ordered FePtPd alloy films, with strong perpendicular magnetic anisotropy, are leading candidates for recording media in the next-generation hard disk drives and solid-state random access memory technologies. The magnetostrictive properties of such materials are of importance, as strain in these systems may thereby affect the magnetic anisotropy or even be intentionally applied to control the magnetic switching characteristics. The measurements performed using the cantilever bending technique indicate that the magnetostriction is dependent on the film composition, and a maximum magnetostriction of 28 ppm is found in the Fe50Pt7Pd43 film. These results suggest the possibility of tailoring magnetostriction via film composition for energy-assisted data storage and synthetic multiferroic random access memory applications.

Original languageEnglish
Article number7138624
JournalIEEE Transactions on Magnetics
Volume51
Issue number11
DOIs
Publication statusPublished - 2015 Nov 1

Keywords

  • Cantilever deflection technique
  • FePtPd thin film
  • magnetostriction

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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