Effect of thickness on texture and magnetic properties of meltspun Fe 6.5wt.% Si ribbons

✍ Scribed by M. Pott-Langemeyer; W. Riehemann; W. Heye

• Publisher: Elsevier Science
• Year: 1991
• Tongue: English
• Weight: 361 KB
• Volume: 133
• Category: Article
• ISSN: 0921-5093
• DOI: 10.1016/0921-5093(91)90050-w

✦ Synopsis

Rapidly solidified FeSi6.5 tapes produced by meltspinning show in the as-quenched condition a weak {100}(011) texture for tapes thinner than 40 pm and a weak {100}(0k/) texture for thicker tapes. In the thicker tapes the (100) direction is tilted out of the surface normal in rolling direction up to 15 ° [ 1 ]. This angle can be decreased or even eliminated by suitable thermomechanical treatment [1]. Simple surfacecontrolled grain growth at temperatures higher than 1200 °C under oxygen pressure of about 5 x 10-2 mbar increases the {100}(011) texture but does not change the tilting angle.

Loss and coercivity measurements have been carried out on recrystaUized and chemically thinned tapes. A linear relationship has been found between coercivity and reciprocal ribbon thickness d -1. Not only the total loss but also the dynamic loss show a minimum for a certain thickness dd, r~in. With increasing frequency fthe value of dj,mi n decreases.