Published May 2003 | Version v1
Journal article Metadata-only

EPR of Gd3+ aquacomplexes in vitrified aqueous solutions and adsorbed on capillary surface

Creators

  • 1. RAN, Kazanskij Fiziko-Tekhnicheskij Inst. im. E.K. Zavojskogo, Kazan' (Russian Federation)
  • 2. Kazanskij Gosudarstvennyj Ehnergeticheskij Univ., Kazan' (Russian Federation)

Description

Partial resolution of fine structure resulting in increase of the line effective width with Gd3+ concentration reduction was revealed in EPR spectra of diluted aqueous (C < 0.2 M) Gd(NO3)3 solutions at room temperature. The phenomena is explained by adsorption of Gd3+ aqua ions on the surface of measuring capillaries. Fine structure of EPR spectra was reveled in vitrified at 77 K and in quasi-vitrified at 298 K Gd3+ solutions. Analysis of EPR spectra of the solutions permitted detecting two types of aquacomplexes with the fine structure parameters D1 = 180 and D2 580 G

Abstract (Russian)

В спектрах ЭПР разбавленных водных (C < 0.2 M) растворов Gd(NO3)3 при комнатной температуре обнаружено частичное разрешение тонкой структуры, которое приводит к возрастанию эффективной ширины линии с уменьшением концентрации Gd3+. Это явление объяснено адсорбцией акваионов Gd3+ на поверхности измерительных капилляров. Тонкая структура спектров ЭПР обнаружена в застеклованных при 77 К и в квазизастеклованных при 298 К растворах Gd3+. Анализ спектров ЭПР этих растворов позволил выявить два типа аквакомплексов с параметрами тонкой структуры D1 = 180 и D2 = 580 G

Additional details

Additional titles

Original title (Russian)
ЭПР аквакомплексов Gd

Publishing Information

Journal Title
Fizika Tverdogo Tela
Journal Volume
45
Journal Issue
5
Journal Page Range
p. 817-821
ISSN
0367-3294
CODEN
FTVTAC

INIS

Country of Publication
Russian Federation
Country of Input or Organization
Russian Federation
INIS RN
35081289
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Descriptors DEI
ADSORPTION; AQUEOUS SOLUTIONS; CONCENTRATION RATIO; CRYSTAL STRUCTURE; ELECTRON SPIN RESONANCE; FINE STRUCTURE; GADOLINIUM COMPLEXES; GADOLINIUM NITRATES; LINE BROADENING; LINE WIDTHS; SYMMETRY
Descriptors DEC
COMPLEXES; DISPERSIONS; GADOLINIUM COMPOUNDS; HOMOGENEOUS MIXTURES; MAGNETIC RESONANCE; MIXTURES; NITRATES; NITROGEN COMPOUNDS; OXYGEN COMPOUNDS; RARE EARTH COMPLEXES; RARE EARTH COMPOUNDS; RESONANCE; SOLUTIONS; SORPTION

Optional Information

Notes
10 refs., 5 figs.