RT Journal Article T1 Application of scanning electron acoustic microscopy to the characterization of n-type and semiinsulating GaAs A1 Méndez Martín, Bianchi A1 Piqueras de Noriega, Javier AB A series of GaAs wafers with different doping levels and electrical resistivity has been used to investigate the scanning electron acoustic microscopy (SEAM) application to the characterization of this material. It has been found that SEAM is particularly useful to characterize semi-insulating GaAs as compared with n-type material. The SEAM signal generation mechanisms in GaAs are discussed. PB Amer Inst Physics SN 0003-6951 YR 1992 FD 1992-03-16 LK https://hdl.handle.net/20.500.14352/58995 UL https://hdl.handle.net/20.500.14352/58995 LA eng NO 1. G. S. Cargill III, Nature 286, 691 (1980).2. J. F. Bresse and A. C. Papadopoulo, Appl. Phys. Lett. 51, 183 (1987).3. J. F. Bresse and A. C. Papadopoulo, J. Appl. Phys. 64, 98 (1988).4. F. J. Rocca and D. G. Davies, J. Phys. D 22, 1894 (1989).5. B. Mendez and J. Piqueras, Inst. Phys. Conf. Ser. No. 100,789 (1989).6. F. Dominguez-Adame and J. Piqueras, J. Appl. Phys. 66, 275 1 (1989).7. B. Méndez and J. Piqueras, J. Appl. Phys. 69, 2776 (1991).8. M. Urchulutegui, J. Piqueras, and J. Llopis, J. Appl. Phys. 65, 2677 (1989).9. N. Kultscher and L. J. Balk, Scanning Electron Microsc. I, 33 (1986).10. C. A. Warwick and G. T. Brown, Appl. Phys. Lett. 46, 574 (1985). NO ©2001. All Rights Reserved.This work was supported by the Volkswagen Foundation, by the Comision Interministerial de Ciencia y Tecnologia (Project MAT 90-47) and by DGICYT-DAAD. The authors thank Wacker-Chemitronic (Doctor K. Lohnert ) for providing the samples. NO Volkswagen Foundation NO Comision Interministerial de Ciencia y Tecnologia NO DGICYT-DAAD DS Docta Complutense RD 6 may 2024