Structural, magnetic and magneto-transport properties of Pt-alloyed MnBi thin films

P. Kharel, Ralph Skomski, R. D. Kirby, D. J. Sellmyer

Research output: Contribution to journalArticle

18 Scopus citations

Abstract

The structural, magnetic and magneto-transport properties of highly c-axis oriented [formula omitted] ([formula omitted], 1.5, 3, and 4.5) thin films have been investigated. The coercivity of the Pt-alloyed thin films increases and the saturation magnetization decreases as the Pt concentration increases. The anisotropy field [formula omitted] increases as a function of Pt concentration, too but the coercivity increases more rapidly than the anisotropy field. This indicates an enhanced domain-wall pinning, caused by increased interstitial disorder due to the occupancy of regular Mn sites by Pt. The same mechanism explains the reduced magnetization. All samples exhibit a large extraordinary Hall effect with anomalous Hall coefficient about an order of magnitude larger than the ordinary Hall coefficient.

Original languageEnglish (US)
Pages (from-to)66
Number of pages1
JournalJournal of Applied Physics
Volume107
Issue number9
DOIs
StatePublished - May 1 2010

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Structural, magnetic and magneto-transport properties of Pt-alloyed MnBi thin films'. Together they form a unique fingerprint.

  • Cite this