Orientational dependence of the exchange biasing in Ni-Fe/Mn1-xNix(x=0.11,0.18,0.23) bilayers

Makoto Konoto, Masakiyo Tsunoda, Migaku Takahashi

Research output: Contribution to journalConference articlepeer-review

8 Citations (Scopus)

Abstract

The correlation between the exchange anisotropy of ferromagnetic (F)/antiferromagnetic (AF) bilayers and the spin alignment of antiferromagnet at the interface is still under question. In the present study, Mn1-xNix (x=0.11,0.18,0.23) alloys, whose spin structure changes with x, were used for Ni-Fe/AF bilayers. The correlation between AF spin alignment at the interface and exchange anisotropy was investigated by controlling the preferred orientation of the bilayers. The crystal orientation of bilayers was changed by adding nitrogen into the sputtering argon gas only during the deposition of the Ni-Fe layer adjacent to the substrate. The preferred orientation was (111) when the nitrogen partial pressure, PN2=0%-1%; (100) when PN2>1%. When PN2<1%, Jk decreased and Hc increased with increasing PN2, because of the decrease of the grain size of γ-Mn-Ni. When PN2 exceeds 1%, Jk increased discontinuously, accompanied by the orientational change of the bilayers.

Original languageEnglish
Pages (from-to)4925-4927
Number of pages3
JournalJournal of Applied Physics
Volume85
Issue number8 II A
DOIs
Publication statusPublished - 1999 Apr 15
EventProceedings of the 43rd Annual Conference on Magnetism and Magnetic Materials - Miami, FL, United States
Duration: 1998 Nov 91998 Nov 12

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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