The magnetic structure of exchange coupled FePt / FePt3 thin films

S. Couet; J. Demeter; E. Menéndez; R. Rüffer; C. J. Kinane; B. Laenens; A. Teichert; S. Tripathi; F. Almeida; A. Vantomme; K. Temst

doi:10.1063/1.4772971

The magnetic structure of exchange coupled FePt / FePt₃ thin films

S. Couet^*, J. Demeter, E. Menéndez, R. Rüffer, C. J. Kinane, B. Laenens, A. Teichert, S. Tripathi, F. Almeida, A. Vantomme, K. Temst

^*Autor corresponent d’aquest treball

Departament de Física

Producció científica: Contribució a revista › Article › Recerca › Avaluat per experts

9 Cites (Scopus)

Resum

We present a study of the magnetic structure of an exchange biased FePt / FePt3 bilayer system. By combining nuclear resonant scattering and polarized neutron reflectometry on the same sample, we are able to assess the magnetic ground state of both the ferromagnetic (F) FePt and antiferromagnetic (AF) FePt3 components of the system. Below the Néel temperature T N, AF order appears in the FePt3 layer with a spin wavevector pointing along the [100] axis. The AF Q 1 phase, where the spin wavevector aligns along the [110] axis is not observed. A net magnetization of the FePt3 layer, which increases towards the FePt / FePt3 interface, is found. Magnetic coupling between the ferromagnetic moments within the FePt3 layer and the adjacent FePt layer is believed to be the cause of the suppression of the Q 1 phase.

Idioma original	Anglès
Número d’article	013909
Revista	Journal of applied physics
Volum	113
Número	1
DOIs	https://doi.org/10.1063/1.4772971
Estat de la publicació	Publicada - 7 de gen. 2013

Accés al document

10.1063/1.4772971

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title = "The magnetic structure of exchange coupled FePt / FePt3 thin films",

abstract = "We present a study of the magnetic structure of an exchange biased FePt / FePt3 bilayer system. By combining nuclear resonant scattering and polarized neutron reflectometry on the same sample, we are able to assess the magnetic ground state of both the ferromagnetic (F) FePt and antiferromagnetic (AF) FePt3 components of the system. Below the N{\'e}el temperature T N, AF order appears in the FePt3 layer with a spin wavevector pointing along the [100] axis. The AF Q 1 phase, where the spin wavevector aligns along the [110] axis is not observed. A net magnetization of the FePt3 layer, which increases towards the FePt / FePt3 interface, is found. Magnetic coupling between the ferromagnetic moments within the FePt3 layer and the adjacent FePt layer is believed to be the cause of the suppression of the Q 1 phase.",

author = "S. Couet and J. Demeter and E. Men{\'e}ndez and R. R{\"u}ffer and Kinane, \{C. J.\} and B. Laenens and A. Teichert and S. Tripathi and F. Almeida and A. Vantomme and K. Temst",

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T1 - The magnetic structure of exchange coupled FePt / FePt3 thin films

AU - Couet, S.

AU - Demeter, J.

AU - Menéndez, E.

AU - Rüffer, R.

AU - Kinane, C. J.

AU - Laenens, B.

AU - Teichert, A.

AU - Tripathi, S.

AU - Almeida, F.

AU - Vantomme, A.

AU - Temst, K.

PY - 2013/1/7

Y1 - 2013/1/7

N2 - We present a study of the magnetic structure of an exchange biased FePt / FePt3 bilayer system. By combining nuclear resonant scattering and polarized neutron reflectometry on the same sample, we are able to assess the magnetic ground state of both the ferromagnetic (F) FePt and antiferromagnetic (AF) FePt3 components of the system. Below the Néel temperature T N, AF order appears in the FePt3 layer with a spin wavevector pointing along the [100] axis. The AF Q 1 phase, where the spin wavevector aligns along the [110] axis is not observed. A net magnetization of the FePt3 layer, which increases towards the FePt / FePt3 interface, is found. Magnetic coupling between the ferromagnetic moments within the FePt3 layer and the adjacent FePt layer is believed to be the cause of the suppression of the Q 1 phase.

AB - We present a study of the magnetic structure of an exchange biased FePt / FePt3 bilayer system. By combining nuclear resonant scattering and polarized neutron reflectometry on the same sample, we are able to assess the magnetic ground state of both the ferromagnetic (F) FePt and antiferromagnetic (AF) FePt3 components of the system. Below the Néel temperature T N, AF order appears in the FePt3 layer with a spin wavevector pointing along the [100] axis. The AF Q 1 phase, where the spin wavevector aligns along the [110] axis is not observed. A net magnetization of the FePt3 layer, which increases towards the FePt / FePt3 interface, is found. Magnetic coupling between the ferromagnetic moments within the FePt3 layer and the adjacent FePt layer is believed to be the cause of the suppression of the Q 1 phase.

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