Exchange bias in Fe@Cr core-shell nanoparticles

C. Binns; M.T. Qureshi; D. Peddis; S.H. Baker; P.B. Howes; A. Boatwright; S.A. Cavill; S.S. Dhesi; Leonardo Lari; R. Kröger; S. Langridge

doi:10.1021/nl401587t

Exchange bias in Fe@Cr core-shell nanoparticles

C. Binns, M.T. Qureshi, D. Peddis, S.H. Baker, P.B. Howes, A. Boatwright, S.A. Cavill, S.S. Dhesi, Leonardo Lari, R. Kröger, S. Langridge

Physics

Research output: Contribution to journal › Article › peer-review

Abstract

We have used X-ray magnetic circular dichroism and magnetometry to study isolated Fe@Cr core-shell nanoparticles with an Fe core diameter of 2.7 nm (850 atoms) and a Cr shell thickness varying between 1 and 2 monolayers. The addition of Cr shells significantly reduces the spin moment but does not change the orbital moment. At least two Cr atomic layers are required to stabilize a ferromagnetic/antiferromagnetic interface and generate the associated exchange bias and increase in coercivity.

Original language	English
Pages (from-to)	3334-3339
Number of pages	6
Journal	Nano Letters
Volume	13
Issue number	7
Early online date	7 Jun 2013
DOIs	https://doi.org/10.1021/nl401587t
Publication status	Published - 10 Jul 2013

Access to Document

10.1021/nl401587t

Cite this

@article{e26b244911ee41e3b59b8b8f73ffe9d7,

title = "Exchange bias in Fe@Cr core-shell nanoparticles",

abstract = "We have used X-ray magnetic circular dichroism and magnetometry to study isolated Fe@Cr core-shell nanoparticles with an Fe core diameter of 2.7 nm (850 atoms) and a Cr shell thickness varying between 1 and 2 monolayers. The addition of Cr shells significantly reduces the spin moment but does not change the orbital moment. At least two Cr atomic layers are required to stabilize a ferromagnetic/antiferromagnetic interface and generate the associated exchange bias and increase in coercivity.",

author = "C. Binns and M.T. Qureshi and D. Peddis and S.H. Baker and P.B. Howes and A. Boatwright and S.A. Cavill and S.S. Dhesi and Leonardo Lari and R. Kr{\"o}ger and S. Langridge",

year = "2013",

month = jul,

day = "10",

doi = "10.1021/nl401587t",

language = "English",

volume = "13",

pages = "3334--3339",

journal = "Nano Letters",

issn = "1530-6984",

publisher = "American Chemical Society",

number = "7",

}

TY - JOUR

T1 - Exchange bias in Fe@Cr core-shell nanoparticles

AU - Binns, C.

AU - Qureshi, M.T.

AU - Peddis, D.

AU - Baker, S.H.

AU - Howes, P.B.

AU - Boatwright, A.

AU - Cavill, S.A.

AU - Dhesi, S.S.

AU - Lari, Leonardo

AU - Kröger, R.

AU - Langridge, S.

PY - 2013/7/10

Y1 - 2013/7/10

N2 - We have used X-ray magnetic circular dichroism and magnetometry to study isolated Fe@Cr core-shell nanoparticles with an Fe core diameter of 2.7 nm (850 atoms) and a Cr shell thickness varying between 1 and 2 monolayers. The addition of Cr shells significantly reduces the spin moment but does not change the orbital moment. At least two Cr atomic layers are required to stabilize a ferromagnetic/antiferromagnetic interface and generate the associated exchange bias and increase in coercivity.

AB - We have used X-ray magnetic circular dichroism and magnetometry to study isolated Fe@Cr core-shell nanoparticles with an Fe core diameter of 2.7 nm (850 atoms) and a Cr shell thickness varying between 1 and 2 monolayers. The addition of Cr shells significantly reduces the spin moment but does not change the orbital moment. At least two Cr atomic layers are required to stabilize a ferromagnetic/antiferromagnetic interface and generate the associated exchange bias and increase in coercivity.

UR - http://www.scopus.com/inward/record.url?scp=84880164958&partnerID=8YFLogxK

U2 - 10.1021/nl401587t

DO - 10.1021/nl401587t

M3 - Article

AN - SCOPUS:84880164958

SN - 1530-6984

VL - 13

SP - 3334

EP - 3339

JO - Nano Letters

JF - Nano Letters

IS - 7

ER -

Exchange bias in Fe@Cr core-shell nanoparticles

Abstract

Access to Document

Other files and links

Cite this