Name: ASTM F 1404 : 1992 : R2007
Brand: ASTM
Price: 62.61 GBP

ASTM F 1404 : 1992 : R2007

Withdrawn

Test Method for Crystallographic Perfection of Gallium Arsenide by Molten Potassium Hydroxide (KOH) Etch Technique (Withdrawn 2016)

Available format(s)

Hardcopy , PDF

Withdrawn date

13-01-2016

Language(s)

English

Published date

01-12-2007

Publisher

American Society for Testing and Materials

CONTAINED IN VOL. 10.04, 2015 Describes whether an ingot or wafer of gallium arsenide is monocrystalline and, if so, to measure the etch pit density and to judge the nature of crystal imperfections.

1.1 This test method is used to determine whether an ingot or wafer of gallium arsenide is monocrystalline and, if so, to measure the etch pit density and to judge the nature of crystal imperfections. To the extent possible, it follows the corresponding test method for silicon, Test Method F 47. Test Method F 47 also presents the definition of many crystallographic terms, applicable to this test method.

1.2 This procedure is suitable for gallium arsenide crystals with etch pit densities between 0 and 200 000/cm².

1.3 Gallium arsenide, either doped or undoped, and with various electrical properties, may be evaluated by this test method. The front surface normal direction of the sample must be parallel to the <001> within ± 5° and must be suitably prepared by polishing or etching, or both. Unremoved processing damage may lead to etch pits, obscuring the quality of the bulk crystal.

1.4 This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and to determine the applicability of regulatory limitations prior to use. Specific hazard statements are given in Section 8.

Committee	F 01
DocumentType	Test Method
Pages	6
ProductNote	Reconfirmed 2007
PublisherName	American Society for Testing and Materials
Status	Withdrawn
Supersedes	ASTM F 1404 : 1992 : R1999

ASTM E 177 : 2014 : REDLINE	Standard Practice for Use of the Terms Precision and Bias in ASTM Test Methods
ASTM D 1125 : 2014 : REDLINE	Standard Test Methods for Electrical Conductivity and Resistivity of Water (Withdrawn 2023)
ASTM F 47 : 1994	Test Method for Crystalographic Perfection of Silicon by Preferential Etch Techniques (Withdrawn 1998)