Influence of perpendicular magnetic field on angular dependent exchange bias of [Co/Pd]5/CoFeB Electrodes

Q. Zhang, T. Yu, H. Naganuma, D. Shi, X. Han

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In perpendicular magnetic anisotropy (PMA) multilayers electrode system, the low spin polarization and large lattice mismatch between traditional PMA electrodes ([Co/Pt]n, [Co/Pd]n) and spin-filter barrier MgO make it difficult to obtain large tunneling magneto-resistance (TMR) ratio [1]. One of several possible solutions is to insert a magnetic electrode between MgO barrier and PMA multilayers electrodes, forming composite magnetic electrodes [2]. Therefore, it is critical to understand magnetic behavior of composite magnetic electrodes. Cain et al early found exchange bias like effect in NiFe/TbCo (FM-FM) bilayers [3]. They explained that tilt of spins at the interface between TbCo and NiFe is responsible for the observed exchange bias like effect. Recently, by applying a large in-plane magnetic field, B. Dieny et al initialized exchange bias in NiFe/[Pt/Co] (FM-FM) bilayer [4] and explained exchange bias like effect using closure domain model [5, 6]. People believe that closure domain formed at the interface is responsible for observed exchange bias. But few works were studied to figure out how perpendicular magnetic field affect closure domain and exchange bias like effect.

Original languageEnglish
Title of host publication2015 IEEE International Magnetics Conference, INTERMAG 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781479973224
DOIs
Publication statusPublished - 2015 Jul 14
Event2015 IEEE International Magnetics Conference, INTERMAG 2015 - Beijing, China
Duration: 2015 May 112015 May 15

Publication series

Name2015 IEEE International Magnetics Conference, INTERMAG 2015

Other

Other2015 IEEE International Magnetics Conference, INTERMAG 2015
Country/TerritoryChina
CityBeijing
Period15/5/1115/5/15

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering
  • Surfaces, Coatings and Films

Fingerprint

Dive into the research topics of 'Influence of perpendicular magnetic field on angular dependent exchange bias of [Co/Pd]<sub>5</sub>/CoFeB Electrodes'. Together they form a unique fingerprint.

Cite this