Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Role of boron diffusion in CoFeB/MgO magnetic tunnel junctions
KTH, School of Information and Communication Technology (ICT), Materials- and Nano Physics, Material Physics, MF. Shahid Beheshti Univ, Iran.
KTH, School of Information and Communication Technology (ICT), Materials- and Nano Physics, Material Physics, MF. VNU HCM, Vietnam.
Show others and affiliations
2015 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 91, no 8, 085311Article in journal (Refereed) Published
Abstract [en]

Several scientific issues concerning the latest generation read heads for magnetic storage devices, based on CoFeB/MgO/CoFeBmagnetic tunnel junctions (MTJs) are known to be controversial, including such fundamental questions as to the behavior and the role of B in optimizing the physical properties of these devices. Quantitatively establishing the internal structures of several such devices with different annealing conditions using hard x-ray photoelectron spectroscopy, we resolve these controversies and establish that the B diffusion is controlled by the capping Ta layer, though Ta is physically separated from the layer with B by several nanometers. While explaining this unusual phenomenon, we also provide insight into why the tunneling magnetoresistance (TMR) is optimized at an intermediate annealing temperature, relating it to B diffusion, coupled with our studies based on x-ray diffraction and magnetic studies.

Place, publisher, year, edition, pages
2015. Vol. 91, no 8, 085311
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-163999DOI: 10.1103/PhysRevB.91.085311ISI: 000350319200013Scopus ID: 2-s2.0-84924081350OAI: oai:DiVA.org:kth-163999DiVA: diva2:810620
Funder
The Swedish Foundation for International Cooperation in Research and Higher Education (STINT)
Note

QC 20150507

Available from: 2015-05-07 Created: 2015-04-13 Last updated: 2017-12-04Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Mohseni, S. MajidAnh Nguyen, T. N.Chung, SunjaeLe, Quang TuanÅkerman, JohanPersson, Johan
By organisation
Material Physics, MF
In the same journal
Physical Review B. Condensed Matter and Materials Physics
Physical Sciences

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 43 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf