Reference

ESR study of x-irradiated strontium nitrate

ESR study of x-irradiated strontium nitrate. Tagaya, Kimihito (Dep. Mater. Sci., Univ. Osaka Prefect., Sakai 591, Japan). Jpn. J. Appl.In this article, certain chemicals are used. One of their cas registry numbers is 10042-76-9 Phys., Part 1, 23(2), 168-71 (English) 1984. CODEN: JAPNDE. DOCUMENT TYPE: Journal CA Section: 77 (Magnetic Phenomena) Section cross-reference(s): 75 A single crystal of Sr(NO3)2 was irradiated with x-rays at room temp., and ESR measurements were performed from 85 K to room temp. Besides O2-, O3- and NO2 centers, an F-center was produced, in which an electron was trapped by an NO3- vacancy. The orientation of the F-center in the Sr(NO3)2 crystal was detd. from the symmetry axis of the g tensor. The sites and orientations of the O2-, O3- and NO2 centers were also detd. The superhyperfine interactions of the F-center with surrounding 14N nuclei of NO3- were investigated, and the superhyperfine splitting consts. were detd. .

Removing barium impurity from strontium nitrate

Removing barium impurity from strontium nitrate. Stepina, S. B.; Zimina, G. V.; Sadokhina, L. A.; Poletaev, I. F.; Adyukova, E. A.; Temurdzhanov, Kh.; Faezov, G.; Saomov, Kh. (Moscow Institute of Fine Chemical Technology, USSR). U.S.S.R. SU 1065343 A1 7 Jan 1984 From: Otkrytiya, Izobret.Several reagents with their cas registry numbers 10042-76-9 and 7440-39-3 are used here., Prom. Obraztsy, Tovarnye Znaki 1984, (1), 96. (Russian). (Union of Soviet Socialist Republics). CODEN: URXXAF. CLASS: IC: C01F011-36. APPLICATION: SU 82-3472057 16 Jul 1982. DOCUMENT TYPE: Patent CA Section: 49 (Industrial Inorganic Chemicals) Ba impurity is removed from Sr(NO3)2 by pptg. a Ba-contg. ppt. at elevated temp. and removing it from the Sr(NO3)2 soln. The degree of purity of the Sr(NO3)2 is increased and the possibility of purifying Sr(NO3)2 contg. any amt. of Ba impurity is realized by carrying out the pptn. in 2 stages. In the 1st stage, 7-10% HNO3 is used at 70-80° and the Ba-contg. ppt. is removed; in the 2nd stage, 4-6 wt. parts Ca(NO3)2/100 wt. parts soln. are added, the soln. is boiled down to ￡1/10 of its initial vol., and the Ba-contg. residue is removed. .