High coercivity rare earth–cobalt films

High coercivity rare earth–cobalt films

High Coercivity Co-Alloy Thin Films on Polymer Substrates

Films of (10 10) textured CoCrPt have been sputtered on polymer substrates for use as thin film tape media. Underlayers of NiAl combined with various intermediate layers were employed to obtain this orientation without thermal damage to the polymer. It was found that NiAl underlayers sputtered on tape substrates have a (112) growth texture, like they do on glass. Film coercivity varied as a fun...

High coercivity SmFeAlC thin films fabricated by multilayer sputtering

Multilayer sputtering of SmFe/C(Al) plus appropriate thermal processing has been used to fabricate SmFeC thin films with A1 substitution for Fe. It was found that the SmFeAlC thin films exhibited exceptionally high Coercivities. A coercivity of 28 kOe was realized for the thin film with structure of Ta( l000~) / lSmFe(40~~/ G(Al)(5,&)]~50/Ta(200@ with subsequent annealing at 650°C.

High coercivity SmFeSiC films fabricated by multilayer sputtering

SmFeSiC thin films have been obtained by sputtering SmFe/C(Si) multilayers with a Ta underlayer on Si substrates and subsequently annali The coercivity of the SmF films strongly depends on the sputtering and annea itions. The influence of the thickness of the Ta underlayer, the thickness ratio of SmFe to C(Si), the argon pressure and heat treatment Inplane Coercivities up to 7.2 kOe and squaren...

Synthesis and Characterization of High Coercivity Rare-earth Ion Doped

Influence of replacing Sr ions by rare-earth ions (RE) ions on the structural and magnetic properties of high coercivity (Hc) SrFe10Al2O19 hexaferrite have been investigated using X-ray diffraction, transmission electron microscopy, differential scanning calorimeter, and SQUID. A 73% increase in intrinsic coercivity is observed for Al doped SrFe10Al2O19 as compared to that of pure SrFe12O19. Th...