Preparation and Characteristics of Cloth Inductor
A cloth inductor consisting of mechanically interwoven amorphous ferromagnetic fibers and conducting fibers is described, and the inductor characteristics reported for various fiber lengths, diameters, and weaving patterns. The inductance L increases nearly in proportion to the fiber length, and in proportion to the second power of the amorphous fiber diameter and the second power of the number of conducting fiber turns per unit length, as expected. The leakage flux and total inductance also depend on the relative flux orientations of neighboring amorphous fibers.
Sputter deposition and read/Write characteristics of Ba-ferrite thin film disk
The nucleation mechanisms and the composition change in Ba ferrite films deposition by means of the Targets Facing Type of Sputtering system have been discussed in detail. In addition, an attempt to control their magnetic properties has been made and read/write characteristics of the films prepared on the disk substrates have been evaluated. The single phase Ba ferrite films composed of fine graines are deposited epitaxially on the c-axis well oriented ZnO layer even in the nucleation stage under a wide range of preparation conditions. Moreover, the film composition, the crystal structure and the magnetic properties depend strongly on oxygen partial pressure. The films sputtered from the targets of n=5 and 6 in the BaO.nFe203 system exhibit good crystallographic and magnetic properties under the wider range of sputtering conditions. The coercive force Hc can be decreased without increasing the critical temperature of c-axis orientation by substitution of In3+for Fe3+. Furthermore, the D50 increases and overwrite decreases with increase of In3+content. Consequently, high density perpendicular recording with D 50 of 88 kFRPI has been achieved by using a narrow gap (0.4 μm) ring head.
Perturbed angular correlation study of a haptenic molecule.
The angular correlation of the 173-247 keV gamma-ray cascade after the electron-capture decay of (111)In is strongly perturbed when the 1-p-nitrophenyl-ethylenediaminetetraacetate chelate of (111)In(8+) is added to a solution containing rabbit antibody to dinitrophenyl groups. The radioactive chelate can be displaced by the addition of dinitrophenyllysine or unlabeled chelate. The average association constant between the antibody and the labeled chelate has been estimated from perturbed angular correlation measurements; this value is compared to the results of equilibrium dialysis. These experiments provide good evidence that information concerning macromolecular behavior can be obtained from perturbed angular correlation experiments that use chemically specific labels.