abstract
- © 2021 The Author(s). Published by IOP Publishing Ltd.On page 3 third paragraph, the beginning of the sentence: From the energy definition of the electromechanical coupling factor from [10] and equations (5) and (6) we have: it should be: From the energy definition of the electromechanical coupling factor from [10] and equations (4) and (6) we have: On page 7 figure 5, the x-axis title should be: f [MHz] (or f/f0) On page 7 seconds paragraph, the inserted equationwas incorrectly stated as: keff = 8 p km; ( / 2) it should be: keff = ( 8/p)km These corrections do not affect in any way the validity of the results and conclusions in our paper.We apologize for these errors.