Magnetic Study of Nanostructural Composite Material Based on Cobalt Compounds and Porous Silicon
- 116 Downloads
In present work, an investigation of a magnetically ordered material, which is a composite structure obtained by embedding of cobalt-containing substance into pores of silicon matrix, was performed. The samples were characterized by steady-state magnetometry and electron microscopy. The methods of longitudinal nonlinear response to a weak ac magnetic field and registration of electron magnetic resonance were used for detail study of their properties. It was established that the material forms a structure of ferromagnetic particles at the inner surface of pores. It was agued that they are mainly nonmetallic magnetic particles like Co2B and/or Co3B. The possibility to apply the concept of blocking temperature to specify the magnetic behavior of the compound on temperature confirmed the single-domain state of these particles.
KeywordsPorous Silicon Magnetic Anisotropy Zero Field Cool Ferromagnetic Particle Electron Magnetic Resonance
We are grateful to P.L. Molkanov (St.-Petersburg Nuclear Physics Institute) for help in M 2 measurements. This work was partly supported by the grant of Presidium of Russian Academy of Sciences P-03, and by the grant of Scholarship of President of Russian Federation.
- 8.Physico-Chemical Phenomena in Thin Films and at Solid Surfaces, ed. by L.I. Trakhtenberg, S.H. Lin, O.J. Ilegbusi. Thin Films and Nanostructures, vol 34 (Academic Press, Oxford, 2007), p. 800Google Scholar
- 14.V.A. Ryzhov, I.I. Larionov, V.N. Fomichev. Zh. Tekh. Fiz., 66, 183 (1996) [Tech. Phys., 41, 620 (1996)]Google Scholar
- 15.A.V. Lazuta, I.I. Larionov, V.A. Ryzhov, Sov. Phys. JETP 73, 1086–1095 (1991)Google Scholar
- 16.V.A. Ryzhov, E.I. Zavatskii, V.A. Solov’ev, I.A. Kisilev, V.N. Fomichev, V.A. Bikineev, Tech. Phys. 40, 71–77 (1995)Google Scholar
- 21.B.D. Gullity, C.D. Graham, Introduction to Magnetic Materials (IEEE Press, Wiley, New York, 2009)Google Scholar