Orthonik

Orthonik

[′ȯr·thə‚nik]
(metallurgy)
A magnetic alloy composed of 45-50% nickel, with the remainder iron, having a grainy structure, high permeability, and a rectangular hysteresis loop; used in magnetic cores.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.