title: Determination of metal stoichiometry in LaSrCu-oxide, YBaCu-oxide, BiCaSrCu-oxide superconducting films and bulk samples.
abstract: Metal stoichiometry in superconducting bulk materials and thin films made of LaSrCu-oxides, YBaCu-oxides, and BiCaSrCu-oxides were determined by inductively coupled plasma atomic-emission spectrometry (ICP-AES) after dissolution in a 1:1 mixture of 20% v/v hydrochloric and nitric acids. The method provides reliable results, with which a variety of manufacturing processes can be optimized. The precision of the metal determinations ranges from 3 to 9%.
authors.affiliation: IBM Research Division, T. J. Watson Research Center, Yorktown Heights, New York 10598, U.S.A.
authors.forename: M M
authors.initials: MM
authors.lastname: Plechaty
authors.forename: B L
authors.initials: BL
authors.lastname: Olson
authors.forename: G J
authors.initials: GJ
authors.lastname: Scilla