Domínguez-Adame Acosta, FranciscoPiqueras De Noriega, Francisco Javier2023-06-202023-06-201989-09-150021-897910.1063/1.344198https://hdl.handle.net/20.500.14352/59303© American Institute of Physics. This work has been supported by the Volkswagen Foundation and by the Comisión Intermiisterial de Ciencia y Tecnología (Project No. PB86-0151).Polycrystalline GaP and InP have been observed by scanning electron acoustic microscopy. While grain boundaries show a weak contrast, twinned regions are clearly revealed. Results suggest that the contrast observed is related to signal generation by a piezoelectric‐coupling mechanismengScanning electron acoustic microscopy observations of twins and grain boundaries in III‐V materialsjournal articlehttp://dx.doi.org/10.1063/1.344198http://scitation.aip.orgopen access538.9PhysicsAppliedFísica de materiales