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Direct non-destructive determination of manganese(II) in cadmium selenide by electron spin resonance spectrometry

✍ Scribed by V.Yu. Nagy; S.S. Grazhulene; O.M. Petrukhin; Ya.L. Kharif; V.Yu. Brezhnev; P.V. Kovtunenko

Publisher: Elsevier Science
Year: 1986
Tongue: English
Weight: 570 KB
Volume: 185
Category: Article
ISSN: 0003-2670
DOI: 10.1016/0003-2670(86)80039-3

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✦ Synopsis

A rapid (l-2 min) nondestructive method based on electron spin resonance is described for the determination of manganese in cadmium selenide powders suitable for semiconductors.

Measurements of the amplitude of the first-derivative curves provide linear calibration over a wide range. Neither a low-temperature facility nor single-crystal samples are needed. The method is useful for determining 10-4-10-'% manganese with a relative standard deviation of about 0.03. The detection limit is 5 X lo"%. The dependence of the e.s.r. signal of manganese(I1) on experimental variables is discussed.

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## CO~IXIUNICATIONS It was a surprise that the amount of gold found in various collections was of the same order of magnitude. As a check of the terrestrial contamination accumulated by the mcshcs, the non-magnetic fraction from a few collections was analyzed in the same manner as mentioned above.