Influence of in-plane crystalline quality of an antiferromagnet on perpendicular exchange coupling and exchange bias

Fitzsimmons, M. R.; Leighton, Chris; Nogués, J.; Hoffmann, A.; Li, Kai; Majkrzak, C. F.; Dura, Joseph A.; Groves, J. R.; Springer, R. W.; Arendt, P. N.; Leiner, V.; Läuter, H.; Schuller, Iván K.

doi:10.1103/physrevb.65.134436

Cited by 67 publications

(34 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This hints at the absence of magnetization rotation and corroborates the suspected DW nucleation and growth processes during switching near the coercive field. 8 Similar PNR data were observed on thin films of Fe exchange coupled to antiferromagnetic FeF 2 , 24 where a field close to the coercive field was applied parallel to the sample plane. The absence of SF signals during magnetization reversal was attributed to mere nucleation and growth processes of magnetic domains, which also applies to our SFM sample.…”

Section: ͑7͒supporting

confidence: 62%

Superferromagnetic domain state of a discontinuous metal insulator multilayer

et al. 2005

View full text Add to dashboard Cite

Polarized neutron reflectivity ͑PNR͒ and magnetometry studies have been performed on the granular multilayer ͓Co 80 Fe 20 ͑1.3 nm͒ /Al 2 O 3 ͑3 nm͔͒ 10 . Due to strong interparticle interactions, a collective superferromagnetic state is encountered. Cole-Cole plots drawn from the complex ac susceptibility are measured as functions of frequency, temperature, and field amplitudes that hint at the relaxation, creep, sliding, and switching regimes of pinned domain walls that are in close agreement with results obtained from simulations. Very slow switching with exponential relaxation under near-coercive fields is confirmed by PNR measurements. The complete absence of spin-flip scattering confirms that the magnetization reversal is achieved merely by domain nucleation and growth.

show abstract

Section: ͑7͒supporting

confidence: 62%

Superferromagnetic domain state of a discontinuous metal insulator multilayer

et al. 2005

View full text Add to dashboard Cite

show abstract

“…Nogués et al [1] have shown that the exchange bias depends strongly on the spin structure at the interface and in particular, on the angle between the FM and AFM spins. Work by Fitzsimmons et al [18][19][20][21][22] using polarized neutron reflectometry and magnetometry show that spin configurations at the FeF2 interface differ from the bulk, and can be linked to exchange anisotropies and bias phenomena.…”

Section: T I S U S E F U L a T T H I S P O I N T T O S U M M A R I mentioning

confidence: 99%

Dynamic and Rotatable Exchange Anisotropy in Fe/KNiF3/FeF2 Trilayers

Widuch¹,

Robert²,

Skrzypek³

et al. 2013

Ferromagnetic Resonance - Theory and Applications

View full text Add to dashboard Cite

“…The exact growth conditions have been reported in earlier studies. 13,22,23 The Fe layer thus prepared is polycrystalline, and grows similarly on MgO and FeF 2 .…”

mentioning

confidence: 99%

“…Notice that the magnitude of H E is one order of magnitude smaller than that in uniform Fe/FeF 2 bilayer films. 22,23 This is due to the exposed FeF 2 surface during the alumina mask application process, resulting in a contaminated Fe/FeF 2 interface. It further attests to the interfacial nature of EB.…”

mentioning

confidence: 99%

“…The FeF 2 , grown at 0.2 nm/s and 200°C, is a twinned quasiepitaxial layer along the ͑110͒ direction. 13,22,23 The alumina membrane is then applied on top of both halves, except a bar-shaped region on the bare MgO. The subsequent deposition of a 15-nm-thick Fe layer ͑at 0.1 nm/s and 150°C͒ and the lift-off result in three types of samples on the same substrate: ͑1͒ 60-nm-size Fe nanodots ͑15 nm thick͒/MgO; ͑2͒ 60-nm-size Fe nanodots ͑15 nm͒/FeF 2 ͑90 nm͒/MgO, and ͑3͒ Fe film ͑15 nm͒/MgO.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Fabrication and thermal stability of arrays of Fe nanodots

Liu

Nogués

Leighton

et al. 2002

Applied Physics Letters

Self Cite

109

View full text Add to dashboard Cite

We have fabricated arrays of 60-nm-size magnetic Fe nanodots over a 1-cm2-size area using nanoporous alumina membranes as shadow masks. The size and size distribution of the nanodots correlate very well with that of the membrane pores. By placing an antiferromagnetic FeF2 layer underneath the Fe nanodots, an exchange anisotropy can be introduced into the Fe/FeF2 system. We have observed an increase in the magnetic hysteresis loop squareness in biased nanodots, suggesting that exchange bias may be used as a tunable source of anisotropy to stabilize the magnetization in such nanodots.

show abstract

Influence of in-plane crystalline quality of an antiferromagnet on perpendicular exchange coupling and exchange bias

Cited by 67 publications

References 35 publications

Superferromagnetic domain state of a discontinuous metal insulator multilayer

Superferromagnetic domain state of a discontinuous metal insulator multilayer

Dynamic and Rotatable Exchange Anisotropy in Fe/KNiF3/FeF2 Trilayers

Fabrication and thermal stability of arrays of Fe nanodots

Contact Info

Product

Resources

About