fraction of about 0 01 to 0 15 to calculate interparticle spacing from election micrographs care must be taken to account for the projection of three dimensional arrays onto a two dimensional image applications wherein low core losses are particularly advantageous include energy storage inductors pulse transformers transformers that switch mode power supplies current transformers and the like as discussed above alloys annealed by the method of the present invention exhibit improved magnetic properties that are stable at temperatures up to about 150 u00b0 c the temperature stability of the present alloys allows utilization thereof in high temperature applications when cores comprising the subject alloys are utilized in electromagnetic devices such as transformers they evidence low power loss and low exciting power demand thus resulting in more efficient operation of the electromagnetic device the loss of energy in a magnetic core as the result of eddy currents which circulate through the core results in the dissipation of energy in the form of heat cores made from the subject alloys require less electrical energy for operation and produce less heat in applications where cooling apparatus is required to cool the transformer cores such as transformers in aircraft and large power transformers an additional savings is realized since less cooling apparatus is required to remove the smaller amount of heat generated by cores made from.