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Effect of the thickness of Cr interlayer on the high-frequency characteristics of FeCoTa/Cr/FeCoTa multilayers

  • Shandong Li
  • , Feng Xu
  • , Ming Liu
  • , Yi Hu
  • , Jianpeng Wu
  • , Xinle Cai
  • , Jie Qiu
  • , Jianhua Lin
  • , Jenq Gong Duh
  • Fujian Normal University
  • Nanjing University of Science and Technology
  • Argonne National Laboratory
  • National Tsing Hua University

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

The effect of non-ferromagnetic Cr interlayer on the high-frequency ferromagnetic properties (HFFMPs) was investigated by use of FeCoTa/Cr/ FeCoTa triple layered films. In conventional thought, the metal interlayer gives rise to a high eddy current loss and therefore a deteriorated HFFMP. However, it is found that HFFMPs depend on the thickness of Cr interlayer. The HFFPMs are improved by Cr-interlayer with a thickness less than 12 nm (sample C1). Comparing with the Cr-interlayer-free FeCoHf single layered film (sample C0), the magnetic anisotropy field of C1 dramatically increases from 185 Oe for C0 to 558 Oe for C1. As a consequence, a high ferromagnetic resonance frequency over than 3 GHz is achieved for sample C1. When the thickness of Cr-interlayer is more than 120 nm (C2), the HFFMPs are reduced due to the increase of eddy current loss and magnetic decoupling between the ferromagnetic layers.

Original languageEnglish
Title of host publicationApplications of Engineering Materials
Pages1356-1359
Number of pages4
DOIs
StatePublished - 2011
Externally publishedYes
Event2011 International Conference on Advanced Engineering Materials and Technology, AEMT 2011 - Sanya, China
Duration: 29 Jul 201131 Jul 2011

Publication series

NameAdvanced Materials Research
Volume287-290
ISSN (Print)1022-6680

Conference

Conference2011 International Conference on Advanced Engineering Materials and Technology, AEMT 2011
Country/TerritoryChina
CitySanya
Period29/07/1131/07/11

Keywords

  • High-frequency ferromagnetic films
  • Interface coupling
  • Multilayer

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