Electron scattering in Au films containing Co clusters

Verschoren, G.; Dobrynin, A. N.; Temst, Kristiaan; Silverans, Roger; Haesendonck, C. Van; Lievens, Peter; Pipeleers, Bert; Zhou, Shengqiang; Vantomme, André; Bras, Wim

doi:10.1016/j.tsf.2008.02.055

Cited by 7 publications

(9 citation statements)

References 16 publications

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“…Axial anisotropy constant K ax is gradually increasing from 0.09 × 10 4 to 2.30 × 10 4 J/m 3 excluding x = 0.40, as seen in the Table. Interestingly, the maximum K ax value appears for the sample that includes 40% Co. This percentage corresponds to optimal cluster size (typical grain radius of 1.4 nm) [24] and intercluster separation for the Co-Au system [25,26]. The interface between Co clusters and the Au matrix is maximum in this sample.…”

Section: Resultsmentioning

confidence: 76%

“…Although extensive work has been carried out regarding the magnetotransport and magnetooptical properties of Au-Co films [17,23,24], the FMR study of Co-Au thin films has not been investigated to the best of our knowledge. Hence, room temperature ferromagnetism in Co x Au (1−x) thin film alloys where x = 0.25, 0.33, 0.40, 0.48, and 0.61 on silicon (100) substrate has been observed by FMR.…”

Section: Resultsmentioning

confidence: 99%

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Tailoring the magnetic anisotropy of cobalt-gold thin lms

2018

Turk J Phys

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Magnetic cobalt-gold thin films (Co x Au (1−x) ) are grown on silicon (100) surfaces by using a sputter deposition technique. Magnetic anisotropy of the films is investigated by ferromagnetic resonance (FMR). Magnetic properties are explored by micromagnetic simulations based on the metropolis algorithm. Effective magnetic anisotropy is gradually increased with Co concentration. In-plane axial anisotropy exists for all samples and it is enhanced with a Co concentration of ∼ 40%, corresponding optimal cluster size, and intercluster separation. Segregation and coalescence of Co clusters caused by different Co concentrations strongly affect magnetic properties of the thin films. Therefore, the study revealed that magnetic behavior of Co x Au (1−x) thin films can be tuned by changing Co concentration.

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Section: Resultsmentioning

confidence: 76%

Section: Resultsmentioning

confidence: 99%

Tailoring the magnetic anisotropy of cobalt-gold thin lms

2018

Turk J Phys

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“…Although extensive work has been carried out regarding the magnetotransport properties and magnetooptical properties of Au-Co thin films and multilayers [10,11], to our knowledge no experimental correlated studies between magnetotransport and nonlinear magnetooptical properties in Au-Co nanocomposite thin films have yet been presented. We begin our analysis by noting that in such segregated nanocomposite systems, small single-domain magnetic clusters can exist where the sizes of the ferromagnetic domains remain unchanged and hence the external field only rotates the magnetic axes of the clusters towards complete alignment; therefore, the size of the magnetoresistive effect depends on the number and size of magnetic clusters within the probed volume [12].…”

Section: Discussionmentioning

confidence: 99%

Experimental Correlation between Nonlinear Optical and Magnetotransport Properties Observed in Au-Co Thin Films

Yang

Kryutyanskiy

Kolmychek

et al. 2016

Journal of Nanomaterials

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Magnetic materials where at least one dimension is in the nanometer scale typically exhibit different magnetic, magnetotransport, and magnetooptical properties compared to bulk materials. Composite magnetic thin films where the matrix composition, magnetic cluster size, and overall composite film thickness can be experimentally tailored via adequate processing or growth parameters offer a viable nanoscale platform to investigate possible correlations between nonlinear magnetooptical and magnetotransport properties, since both types of properties are sensitive to the local magnetization landscape. It has been shown that the local magnetization contrast affects the nonlinear magnetooptical properties as well as the magnetotransport properties in magnetic-metal/nonmagnetic metal multilayers; thus, nanocomposite films showcase another path to investigate possible correlations between these distinct properties which may prove useful for sensing applications.

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“…Au (Co) currently remain poorly understood and, in general, are not in sight researchers. In this connection, we emphasize the work [35], which is devoted to the study of transport properties model peculiar film system, which of Con clusters (diameter of 1-3 nm) embedded in a Au matrix. The authors showed that in this case the temperature dependence ρ is consistent with the model of Bloch-Gruneisen and value 0 the mean free path of electrons are found in the ratio: We have studied the temperature dependences  and TCR of film systems Au(4-48)/Co(10-14)/S.…”

Section: еLectrophysical Propertiesmentioning

confidence: 99%

Physical Properties of Film Alloys Based on Ferromagnetic and Noble Metals (review). ІІ. Film Materials Based on Co and Ag or Au

Cheshko¹,

Odnodvorets²,

Protsenko³

et al. 2016

J. Nano- Electron. Phys.

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The results of analysis of literature and own results on the phase composition, electrophysical and magnetoresistive properties of film based granular alloys Co and Ag or Au. As between film systems based on Fe and Ag or Au and Co and Ag or Au much in common, then this work can be seen as a continuation of [1], although we observed significant withdrawal of these two groups of film materials in structural-phase state, causing some change in electrophysical and magnetoresistive properties. The increase of the value of temperature coefficient resistance film Ag (Co) at the сСо ≥ 26 at.% and the strain coefficient at the сСо  70 at.%. It is concluded that the value of GMR completely determined by the temperature measurement and perfection of granulate state. Кeywords: Films Ag(Co) and Au(Co), Structural and phase state, Electrophysical and magnetoresistive properties, Temperature coefficient of resistance, Strain coefficient.

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Electron scattering in Au films containing Co clusters

Cited by 7 publications

References 16 publications

Tailoring the magnetic anisotropy of cobalt-gold thin lms

Tailoring the magnetic anisotropy of cobalt-gold thin lms

Experimental Correlation between Nonlinear Optical and Magnetotransport Properties Observed in Au-Co Thin Films

Physical Properties of Film Alloys Based on Ferromagnetic and Noble Metals (review). ІІ. Film Materials Based on Co and Ag or Au

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