Abstract
This paper reports theoretical calculations of the beam spreading of magnetostatic backward volume waves (MSBVW’s) arising from the finite length of practical transducers. The calculations include the beam steering effects resulting from the pronounced anisotropy of MSBVW propagation. The predicted beam spreading of MSBVW’s is significantly larger than that of SAW’s on YZ LiNbO3. On the other hand, based on comparison with reported experimental results on the beam spreading of magnetostatic surface waves (MSSW’s), it would appear that MSBVW’s suffer smaller beam spreading than MSSW’s.
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