Growth and characterisation of ferromagnetic and antiferromagnetic Fe2+xVyAl Heusler alloy films

Teodor Huminiuc; Oliver Whear; Tomoyuki Takahashi; Jun Young Kim; Andrew Vick; Gonzalo Vallejo-Fernandez; Kevin O'Grady; Atsufumi Hirohata

doi:10.1088/1361-6463/aacf4c

Growth and characterisation of ferromagnetic and antiferromagnetic Fe_2+xV_yAl Heusler alloy films

Teodor Huminiuc, Oliver Whear, Tomoyuki Takahashi, Jun Young Kim, Andrew Vick, Gonzalo Vallejo-Fernandez, Kevin O'Grady, Atsufumi Hirohata^*

^*Corresponding author for this work

School of Mathematics & Physics

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

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Abstract

We investigated growth, annealing conditions and magnetic properties of the Heusler alloy Fe_2+xV_yAl by means of x-ray diffraction, magnetic hysteresis and exchange-bias measurements. Ferromagnetic Heusler alloy films were obtained by sputtering Fe₂VAl and Fe₃VAl targets and performing post-growth annealing. The characteristic (2 2 0) Heusler alloy peaks were seen in the x-ray diffraction measurements and corresponding ferromagnetic behaviours were observed. In addition, antiferromagnetic Heusler alloy films were deposited by employing Al pegs on Fe₃VAl sputtering targets. The deposited films had elemental ratios close to the predicted Fe_2.5V_0.5Al phase, and a 16 Oe exchange-bias was measured in a Fe_2.3V_0.7Al/Co₆₀Fe₄₀ system at 100 K.

Original language	English
Article number	325003
Number of pages	5
Journal	Journal of Physics D: Applied Physics
Volume	51
Issue number	32
DOIs	https://doi.org/10.1088/1361-6463/aacf4c
Publication status	Published - 13 Jul 2018

Keywords

antiferromagnet
exchange bias
Fe2VAl
Heusler alloys
spintronics
sputtering
x-ray diffraction
UKRI
EPSRC
EP/M02458X/1

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10.1088/1361-6463/aacf4c

Huminiuc_2018_J._Phys._D__Appl._Phys._51_325003Final published version, 1.24 MBLicence: CC BY

Cite this

@article{119cba584ebc4c33b7b6a745f214d5db,

title = "Growth and characterisation of ferromagnetic and antiferromagnetic Fe2+xVyAl Heusler alloy films",

abstract = "We investigated growth, annealing conditions and magnetic properties of the Heusler alloy Fe2+xVyAl by means of x-ray diffraction, magnetic hysteresis and exchange-bias measurements. Ferromagnetic Heusler alloy films were obtained by sputtering Fe2VAl and Fe3VAl targets and performing post-growth annealing. The characteristic (2 2 0) Heusler alloy peaks were seen in the x-ray diffraction measurements and corresponding ferromagnetic behaviours were observed. In addition, antiferromagnetic Heusler alloy films were deposited by employing Al pegs on Fe3VAl sputtering targets. The deposited films had elemental ratios close to the predicted Fe2.5V0.5Al phase, and a 16 Oe exchange-bias was measured in a Fe2.3V0.7Al/Co60Fe40 system at 100 K.",

keywords = "antiferromagnet, exchange bias, Fe2VAl, Heusler alloys, spintronics, sputtering, x-ray diffraction, UKRI, EPSRC, EP/M02458X/1",

author = "Teodor Huminiuc and Oliver Whear and Tomoyuki Takahashi and Kim, {Jun Young} and Andrew Vick and Gonzalo Vallejo-Fernandez and Kevin O'Grady and Atsufumi Hirohata",

note = "Funding Information: This work is partially funded by EU-FP7 HARFIR (NMP3- SL-2013-604398) and UK EPSRC (EP/M02458X/1). Funding Information: This work is partially funded by EUFP7 HARFIR (NMP3SL2013604398) and UK EPSRC (EP/M02458X/1). Publisher Copyright: {\textcopyright} 2018 IOP Publishing Ltd.",

year = "2018",

month = jul,

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doi = "10.1088/1361-6463/aacf4c",

language = "English",

volume = "51",

journal = "Journal of Physics D: Applied Physics",

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TY - JOUR

T1 - Growth and characterisation of ferromagnetic and antiferromagnetic Fe2+xVyAl Heusler alloy films

AU - Huminiuc, Teodor

AU - Whear, Oliver

AU - Takahashi, Tomoyuki

AU - Kim, Jun Young

AU - Vick, Andrew

AU - Vallejo-Fernandez, Gonzalo

AU - O'Grady, Kevin

AU - Hirohata, Atsufumi

N1 - Funding Information: This work is partially funded by EU-FP7 HARFIR (NMP3- SL-2013-604398) and UK EPSRC (EP/M02458X/1). Funding Information: This work is partially funded by EUFP7 HARFIR (NMP3SL2013604398) and UK EPSRC (EP/M02458X/1). Publisher Copyright: © 2018 IOP Publishing Ltd.

PY - 2018/7/13

Y1 - 2018/7/13

N2 - We investigated growth, annealing conditions and magnetic properties of the Heusler alloy Fe2+xVyAl by means of x-ray diffraction, magnetic hysteresis and exchange-bias measurements. Ferromagnetic Heusler alloy films were obtained by sputtering Fe2VAl and Fe3VAl targets and performing post-growth annealing. The characteristic (2 2 0) Heusler alloy peaks were seen in the x-ray diffraction measurements and corresponding ferromagnetic behaviours were observed. In addition, antiferromagnetic Heusler alloy films were deposited by employing Al pegs on Fe3VAl sputtering targets. The deposited films had elemental ratios close to the predicted Fe2.5V0.5Al phase, and a 16 Oe exchange-bias was measured in a Fe2.3V0.7Al/Co60Fe40 system at 100 K.

AB - We investigated growth, annealing conditions and magnetic properties of the Heusler alloy Fe2+xVyAl by means of x-ray diffraction, magnetic hysteresis and exchange-bias measurements. Ferromagnetic Heusler alloy films were obtained by sputtering Fe2VAl and Fe3VAl targets and performing post-growth annealing. The characteristic (2 2 0) Heusler alloy peaks were seen in the x-ray diffraction measurements and corresponding ferromagnetic behaviours were observed. In addition, antiferromagnetic Heusler alloy films were deposited by employing Al pegs on Fe3VAl sputtering targets. The deposited films had elemental ratios close to the predicted Fe2.5V0.5Al phase, and a 16 Oe exchange-bias was measured in a Fe2.3V0.7Al/Co60Fe40 system at 100 K.

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