Ferromagnetic thin film

M. Ledieu, F. Schoenstein, J.-H. Le Gallon, et al, Microwave permeability spectra of ferromagnetic thin films over a wide range of temperatures, Journal of Applied Physics, vol. 93, no. 10, pp. 7202-7204, 2003. 

F. Huang, G.J. Mankey, M.T. Kief, R.F. Willis, Finite-size-scaling behavior of ferromagnetic thin-films. J. Appl. Phys. 73(10), 6760-6762 (1993)... 

Scholl, A., Baumgarten, L., Jacquemin, R., and Eberhardt, W. (1997). Ultrafast spn dynamics of ferromagnetic thin films observed by f-sec spin resolved two photon photoemission. Phys.Rev.Lett., 79 5146-5149. 

Interest is maintained ia these materials because of the combination of mechanical, corrosion, electric, and magnetic properties. However, it is their ferromagnetic properties that lead to the principal appHcation of glassy metals. The soft magnetic properties and remarkably low coercivity offer tremendous opportunities for this appHcation (see Magnetic materials, bulk Magnetic materials, thin film). 

E. Pugh and T. O. Mohr, Thin Films Properties of Ferromagnetic Films, ASM, Metals Park, Ohio, 1963, Chapt. 7. 

Figure 9.11 Magnetic bubble memory schematic domains of reversed polarity (bubbles) are induced in the thin ferromagnetic garnet film.

We illustrate the CVD preparation of thin films with some examples. The selected materials are ferromagnetic [Fe+ (Cp )2][TCNE] and the solvent-free V(TCNE) c phase. [Ee+ (Cp )2][TCNE] is a ferromagnet with Tq = 4.8 K (Miller etal, 1988) and V[TCNE] c orders magnetically above 350 K (Manriquez et al., 1991), as previously discussed in Section 1.5. Table 3.2 summarizes the CVD conditions for growth of the thin films. V(TCNE) c and [Fe+ (Cp )2][TCNE] correspond to type I and II, respectively. 

Various experimental methods have been developed for investigating the magnetoelastic properties of thin films and nanoscale magnetic systems. In the following subsections, we discuss the most important ones (i) the magnetoelastic cantilever, (ii) strain induced anisotropy, (iii) magnetostriction in spin valves, (iv) strain modulated ferromagnetic resonance, (v) secondary-electron spin-polarisation, and (vi) strain-induced anisotropy due to the spontaneous strains. 

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