High-Frequency Resistivity Measurement of Nanocrystalline Magnetic Thin Films.

HIGH-RESISTIVITY SOFT MAGNETIC THIN FILMS USING CoFe METAL/NATIVE OXIDE MULTILAYERS (INVITED)

Magnetic thin films suitable for gigahertz operation must simultaneously achieve soft properties, high saturation magnetization, and a high resistivity. The recently-introduced metal/native oxide multilayer (MNOM) composite meets these requirements. This system consists of nanogranular high-moment CoxFe100-x layers separated by ultrathin magnetic native oxide layers that isolate the metallic la...

Microwave, magnetic, and structural properties of nanocrystalline exchange-coupled Ni11Co11Fe66Zr7B4Cu1 films for high frequency applications

exchange-coupled Ni11Co11Fe66Zr7B4Cu1 films for high frequency applications S. D. Yoon, A. K. Baraskar, A. Geiler, A. Yang, C. Pettiford, N. X. Sun, R. Goswami, M. A. Willard, C. Vittoria, and V. G. Harris Center for Microwave Magnetic Materials and Integrated Circuits, Northeastern University, Boston, Massachusetts 02115, USA Department of Electrical and Computer Engineering, Northeastern Univ...

Nanocrystalline structure and hardness of thin films

WaSiaN films were deposited by reactive sputtering in a N2+Ar atmosphere from a W target incrusted with different number of Si pieces. The coatings present different crystallographic structures from the crystalline a-W and W2N to amorphous phase. Crystalline films have very low grain sizes from 15 down to 3 nm. For WaSi films there is a good correlation between the increase of the hardness and ...

Nanocrystalline silicon thin films on PEN substrates

We study the structural and electrical properties of intrinsic layers growth close to the transition between amorphous silicon (a-Si:H) and nanocrystalline silicon (nc-Si:H) deposited on glass and PEN without intentional heating. These samples showed different behaviour in Raman shift and XRD spectra when compared with that of samples deposited at 200oC. Electrical properties of these films als...

Ferromagnetism in nanocrystalline epitaxial Co:TiO2 thin films