Title :
Iron Loss of Supermalloy Film Core
Author :
Sakaki, Y. ; Okuno, H. ; Ishikawa, M. ; Naito, M.
Author_Institution :
Chiba Univ. Faculty of Engng., Chiba.
fDate :
3/1/1987 12:00:00 AM
Abstract :
The suitability of a supermalloy thin film about 1 ¿m thick for use in 1 MHz power equipment was studied. The relationship between the hysteresis loss Wh and the maximum flux density Bm for the approximately 1 ¿m thick films deposited on SiO2 substrate is approximately Wh ¿ Bm1.75. This shows the same tendency as that for the rolled plate, where Wh ¿ Bm1.6, but the hysteresis loss value is one order of magnitude greater. In conventional rolled tape, the hysteresis loss is inversely proportional to tape thickness, but in the case of thin films, Wh obstructs any large-scale reduction in the loss.
Keywords :
Iron; Magnetic cores; Magnetic films; Magnetic flux; Magnetic hysteresis; Magnetic materials; Sputtering; Substrates; Thick films; Transistors;
Journal_Title :
Magnetics in Japan, IEEE Translation Journal on
DOI :
10.1109/TJMJ.1987.4549386