Exchange-bias phenomena in mechanically milled Fe/NiO

Fan, Lin; Shen, Gang; Jiang, Dongmei; Shi, Wangzhou; Ma, Xiaoqing

doi:10.1016/j.jallcom.2006.03.035

Cited by 3 publications

(2 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The maximum values for EB are obtained for 10 ML Fe films, to be largely above the onset for ferromagnetism, on the thickest NiO films used for this study, i.e., 150 ML. The maximum EB field obtained is 220 Oe, largely higher than the values obtained for polycrystalline Fe/NiO systems, 33,34 or for other FM layers on NiO. 52 The decrease in exchange bias field for Fe layers of larger thickness ͑Fig.…”

Section: Exchange Biasmentioning

confidence: 68%

“…32 The values of EB field measured on similar systems, such as for example FM/NiO bilayers or polycrystalline Fe/NiO are a few tens of Oe at room temperature. 33,34 In this study we investigate the magnetic properties of Fe epitaxial layers on NiO in a wide coverage range for both the AF and FM layers, and we show that the use of atomic-scale controlled systems allows achieving a good degree of control of the magnetic properties and of the dominant mechanisms which influence magnetization reversal. The good crystal quality allows obtaining larger values of EB at room temperature, compared to polycrystalline systems of the FM/ NiO type, and no significant training effect.…”

Section: Introductionmentioning

confidence: 95%

See 1 more Smart Citation

Magnetic couplings and exchange bias in Fe/NiO epitaxial layers

et al. 2010

View full text Add to dashboard Cite

We report an investigation of the magnetic properties of Fe films epitaxially grown on NiO layers with ͑001͒ orientation. The results are interpreted with the help of a morphological characterization of the system. The onset of ferromagnetic behavior for the Fe layer is observed at 8 ML and it is ascribed to the coalescence of the islands, formed by Fe at the first stages of the growth, into larger interconnected islands. At larger Fe layer thickness the magnetization reversal is explained by taking into account the interplay between a unidirectional anisotropy, due to coupling with NiO, and the uniaxial growth anisotropy of Fe, which develops around 50 ML Fe layer thickness. No significant chemical modification of the interface is observed for thermal treatments up to 540 K. Exchange bias can be induced only for NiO layer thickness above 25 ML and its value can be tuned by changing the ferromagnetic to antiferromagnetic layer thickness ratio, reaching 220 Oe. No training effect is observed for this system.

show abstract

Section: Exchange Biasmentioning

confidence: 68%