A method of producing a soft magnetic material includes the steps of preparing soft magnetic powder containing a plurality of soft magnetic particles etching the soft magnetic powder to remove surfaces of the soft magnetic particles and, after the etching step, heat-treating the soft magnetic powder in a finely divided state at a temperature of not less than 400\xb0 C. A GaN crystal is grown on the seed implanted undersubstrate by a facet growth method. Reflectors and light diffusion patterns on the light guiding strips provide control and independence over the two sides of the planar light apparatus. The scanner translates the simultaneous phase-shifting module with respect to an object under measurement. In detail, the new processes, according to the present invention, are ultimately related to the synthesis of intermediates to prepare the above NEP inhibitors, namely compounds according to formula, or salt thereof,wherein R1 and R2 are, independently of each other, hydrogen or a nitrogen protecting group, and R3 is a carboxyl group or an ester group, preferably carboxyl group or alkyl ester. The solar cell module includes a support substrate and a plurality of solar cells on the support substrate.