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

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

Research output: Contribution to journalArticle

15 Citations (Scopus)

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)
Number of pages1
JournalJournal of Applied Physics
Volume107
Issue number9
DOIs
StatePublished - May 1 2010

Fingerprint

Hall effect
transport properties
coercivity
thin films
magnetization
anisotropy
domain wall
interstitials
disorders
saturation

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Structural, magnetic and magneto-transport properties of Pt-alloyed MnBi thin films. / Kharel, P.; Skomski, Ralph; Kirby, R. D.; Sellmyer, David J.

In: Journal of Applied Physics, Vol. 107, No. 9, 01.05.2010.

Research output: Contribution to journalArticle

@article{ebc156343c224eafa117793a9692f070,
title = "Structural, magnetic and magneto-transport properties of Pt-alloyed MnBi thin films",
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.",
author = "P. Kharel and Ralph Skomski and Kirby, {R. D.} and Sellmyer, {David J}",
year = "2010",
month = "5",
day = "1",
doi = "10.1063/1.3360204",
language = "English (US)",
volume = "107",
journal = "Journal of Applied Physics",
issn = "0021-8979",
publisher = "American Institute of Physics Publising LLC",
number = "9",

}

TY - JOUR

T1 - Structural, magnetic and magneto-transport properties of Pt-alloyed MnBi thin films

AU - Kharel, P.

AU - Skomski, Ralph

AU - Kirby, R. D.

AU - Sellmyer, David J

PY - 2010/5/1

Y1 - 2010/5/1

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=85016161189&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85016161189&partnerID=8YFLogxK

U2 - 10.1063/1.3360204

DO - 10.1063/1.3360204

M3 - Article

VL - 107

JO - Journal of Applied Physics

JF - Journal of Applied Physics

SN - 0021-8979

IS - 9

ER -