We report the results of a study on Ni-clusters assembled films deposited on Si(100) and MgO(100) surfaces. The films were produced by deposition of pre-formed Ni nanoparticles generated by a gas aggregation source. The samples topography and growth mode were investigated with SEM, AFM, STM and XPS. MOKE technique was used to determine magnetization curves at T=300 K, T=100 K and T=50K. The films show random paving growth mode, where clusters assemble in agglomerates. From MOKE data we observe a behaviour that can be ascribed to the occurrence of Super Correlated Spin Glass phase at T=300 K, and soft ferromagnetic hysteresis cycles at low temperature, possibly related with a different magnetic phase.

Growth and study of Ni nanoparticles films deposited on inert substratets / D'Addato, Sergio; Gragnaniello, Luca; A., di Bona; Rota, Alberto; P., Vavassori; Valeri, Sergio. - In: JOURNAL OF PHYSICS. CONFERENCE SERIES. - ISSN 1742-6588. - ELETTRONICO. - 100:(2008), pp. 072046-072046.

Growth and study of Ni nanoparticles films deposited on inert substratets

D'ADDATO, Sergio;GRAGNANIELLO, Luca;ROTA, Alberto;VALERI, Sergio
2008

Abstract

We report the results of a study on Ni-clusters assembled films deposited on Si(100) and MgO(100) surfaces. The films were produced by deposition of pre-formed Ni nanoparticles generated by a gas aggregation source. The samples topography and growth mode were investigated with SEM, AFM, STM and XPS. MOKE technique was used to determine magnetization curves at T=300 K, T=100 K and T=50K. The films show random paving growth mode, where clusters assemble in agglomerates. From MOKE data we observe a behaviour that can be ascribed to the occurrence of Super Correlated Spin Glass phase at T=300 K, and soft ferromagnetic hysteresis cycles at low temperature, possibly related with a different magnetic phase.
100
072046
072046
Growth and study of Ni nanoparticles films deposited on inert substratets / D'Addato, Sergio; Gragnaniello, Luca; A., di Bona; Rota, Alberto; P., Vavassori; Valeri, Sergio. - In: JOURNAL OF PHYSICS. CONFERENCE SERIES. - ISSN 1742-6588. - ELETTRONICO. - 100:(2008), pp. 072046-072046.
D'Addato, Sergio; Gragnaniello, Luca; A., di Bona; Rota, Alberto; P., Vavassori; Valeri, Sergio
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/597061
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