Magnetic properties of nanogranular CoxCu1−x structures

Závěta, K.; Lachowicz, H.K.; Maryško, M.; Arnold, Z.; Dłużewski, Piotr

doi:10.1016/j.jallcom.2004.09.009

Cited by 9 publications

(3 citation statements)

References 16 publications

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“…The magnetization in the films annealed at 700-900 1C tended to saturate at about 5 kOe, which indicates that the films are ferromagnetic. This behavior is quite different from that of Co granular thin films with low Co concentrations [12,13], which show superparamagnetic behavior at room temperature. Therefore, Co clusters are not likely to be formed in the Co/Nb-codoped TiO 2 films, in accord with the structural analysis.…”

Section: Structural Characterizationcontrasting

confidence: 65%

Magnetic and magneto-optical properties of Co/Nb-codoped TiO2 films deposited by gas flow sputtering

Sakuma

Nagamatsu

Kashiwakura

et al. 2010

Journal of Magnetism and Magnetic Materials

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Section: Structural Characterizationcontrasting

confidence: 65%

Magnetic and magneto-optical properties of Co/Nb-codoped TiO2 films deposited by gas flow sputtering

Sakuma

Nagamatsu

Kashiwakura

et al. 2010

Journal of Magnetism and Magnetic Materials

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“…Therefore, the film can exhibit a SPM behaviour. A similarly shaped curve has been observed for a superparamagnetic sample [23][24][25].…”

Section: Magnetic Measurementsupporting

confidence: 72%

Electrochemical preparation and magnetic properties of Co–Cu nanometric granular alloy films

et al. 2019

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A detailed electrodeposition of Co-Cu nanometric granular alloy films in citrate solution has been performed based on a galvanostatic technique. Electrochemical behaviour of the bath solution containing both Co 2+ and Cu 2+ was investigated by linear sweep voltammetry. Cathodic polarization curves indicated that high quality Co-Cu nanometric granular alloy films can be obtained at room temperature with a pH of 6 and current density equal to or more negative than − 1.0 mA cm −2. Magnetic properties of the films were measured at room temperature by the physical property measurement system. Magnetization curves of the as-prepared Co-Cu nanometric granular alloy films displayed superparamagnetism (SPM). However, after annealing at 450 • C for 1 h, magnetic property of the films changed from SPM to ferromagnetism. Meanwhile, the annealed Co-Cu nanometric granular alloy films showed an increase in saturation magnetization with the increase of the current density.

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“…These systems are single-layer analog of the ferromagnetic-nonmagnetic-ferromagnetic superlattice structures for observation of the giant magnetoresistance effect. The same structures were realized on "non ferromagnetic metalferromagnetic" [29][30][31][32][33] and "insulator-ferromagnetic" [34,35]. We suppose, that the granular systems based on semiconductor and ferromagnetic materials [36,37] are most perspective for integration into the modern industry to realized devices.…”

Section: Introductionmentioning

confidence: 99%