Material parameters and thermal stability of synthetic ferrimagnet free layers in magnetic tunnel junction nanopillars

D. Markó, T. Devolder, K. Miura, K. Ito, Joo Von Kim, C. Chappert, S. Ikeda, H. Ohno

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

We have determined the material parameters of optimized synthetic ferrimagnet (SyF) free layers in magnetic tunnel junctions by means of magneto-resistance loops as well as microwave noise spectroscopy under constant voltage, and the field dependence thereof. By comparing the experimental data with calculated loops and spin wave modes from a 2-macrospin model, we have deduced the saturation magnetization, anisotropy, damping, and interlayer exchange coupling. From waiting time experiments of field-induced switching, the energy barrier relevant for the thermally activated switching of the free SyF has been experimentally evaluated and compared to an existing model in order to assess its consistency.

Original languageEnglish
Article number053922
JournalJournal of Applied Physics
Volume112
Issue number5
DOIs
Publication statusPublished - 2012 Sep 1

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint

Dive into the research topics of 'Material parameters and thermal stability of synthetic ferrimagnet free layers in magnetic tunnel junction nanopillars'. Together they form a unique fingerprint.

Cite this