TITLE

The Jahn–Teller system Ag2+: NaF, an electron paramagnetic resonance and optical absorption study

AUTHOR(S)
Monnier, A.; Gerber, A.; Bill, H.
PUB. DATE
May 1991
SOURCE
Journal of Chemical Physics;5/1/1991, Vol. 94 Issue 9, p5891
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The ion Ag2+ introduced into NaF shows a tetragonal electron paramagnetic resonance spectrum at 4.2 K which dynamically averages above [bar_over_tilde:_approx._equal_to]40 K. Uniaxial stress is used to show that the ground state is a strongly coupled Exε Jahn–Teller state. The well-resolved superhyperfine structure due to the F- neighbors is analyzed with a linear combination of atomic orbitals picture. Optical absorption of as-grown and treated crystals is further presented. The former ones show peaks at 202, 213, 219 nm due to Ag+. The latter ones present complex absorption spectra related to silver.
ACCESSION #
7618486

 

Related Articles

  • Observation of superhyperfine structure in the ESR spectra of two tetragonal Fe centers in KTaO[sub 3] and a new model for the center. Bursian, V. �.; Vikhnin, V. S.; Sochava, L. S.; Kapphan, S.; Hesse, H. // Physics of the Solid State;Apr97, Vol. 39 Issue 4, p547 

    Superhyperfine structure is observed in the lines of the ESR spectra of two tetragonal iron centers in the KTaO[sub 3] crystal, namely, "Fe 4/2" and Fe[sup 3+, sub Ta]-Vo. Analysis of the superhyperfine structure of the former of these centers shows that the iron ion replaces Ta[sup 5+] and is...

  • Anisotropic hyperfine structure in the EPR spectrum of impurity ions in single crystals. Torosyan, O. S.; Yaıloyan, S. M.; Torosyan, F. S.; Mkhoyan, L. M. // Physics of the Solid State;Jun99, Vol. 41 Issue 6, p934 

    Expressions are obtained for the hyperfine splitting in EPR spectra of impurity ions with electron spin ½ and arbitrary nuclear spin for arbitrary anisotropy of the g-factor and hyperfine structure constants. These results generalize the previously obtained results of Weil for the case of...

  • ESR spectrum of I17O2: Asymmetric hyperfine tensor of 17O. Byberg, J. R. // Journal of Chemical Physics;2/15/1988, Vol. 88 Issue 4, p2129 

    ESR spectra of I 17O2 embedded in solid KC104 exhibit a complicated 17O hyperfine structure, which allows an accurate determination of the hyperfine and quadrupole tensors A(17O) and Q(17O). A(17O) is strongly anisotropic in the molecular plane and contains an asymmetric component. These...

  • A simple experimental setup for the simultaneous measurement of ESR and absorption spectra. Gescheidt, Georg // Review of Scientific Instruments;Jun94, Vol. 65 Issue 6, p2145 

    A simple experimental setup for the simultaneous measurement of ESR and optical-absorption spectra at the same position inside the microwave cavity is described. It is shown that only very little effort is necessary to obtain electronic-absorption spectra of good quality.

  • Light-induced migration of charge in photorefractive Bi12SiO20 and Bi12GeO20 crystals. Jani, M. G.; Halliburton, L. E. // Journal of Applied Physics;8/15/1988, Vol. 64 Issue 4, p2022 

    Presents information on a study which characterized point defects in commercially grown, undoped crystals Bi[sub22]GeO[sub20] (BGO) and Bi[sub12]SiO[sub20] (BSO). Results of electron spin resonance; Information on thermally stimulated luminescence; Effect of optical bleach on the optical...

  • The electrochemical properties of poly(2,5-thienylene vinylene) synthesized via water-soluble precursor polymer. Onoda, Mitsuyoshi; Morita, Shigenori; Iwasa, Toshinori; Nakayama, Hiroshi; Yoshino, Katsumi // Journal of Chemical Physics;12/1/1991, Vol. 95 Issue 11, p8584 

    The electrochemical, optical, and magnetic properties in poly(2,5-thienylene vinylene), PTV, in comparison with those of polythiophene, PT, during electrochemical p-type doping have been investigated by cyclic voltammetry, optical absorption spectrum, and electron spin resonance (ESR)...

  • Defects at nitrogen site in electron-irradiated AlN. Son, N. T.; Gali, A.; Szabó, Á.; Bickermann, M.; Ohshima, T.; Isoya, J.; Janzén, E. // Applied Physics Letters;6/13/2011, Vol. 98 Issue 24, p242116 

    In high resistance AlN irradiated with 2 MeV electrons, an electron paramagnetic resonance (EPR) spectrum, labeled EI-1, with an electron spin S=1/2 and a clear hyperfine (hf) structure was observed. The hf structure was shown to be due the interaction between the electron spin and the nuclear...

  • Study of hyperfine interactions in carbonaceous chondrite Isheyevo (CH/CB) using M�ssbauer spectroscopy with high velocity resolution. Oshtrakh, M. I.; Grokhovsky, V. I.; Uymina, K.; Semionkin, V. A. // Hyperfine Interactions;2007, Vol. 177 Issue 1-3, p73 

    The unique meteorite bencubbinite Isheyevo CH/CB which was recently found in Bashkortostan, Russia was studied using M�ssbauer spectroscopy with high velocity resolution. M�ssbauer hyperfine parameters of metal in Isheyevo CH/CB external and internal regions demonstrated the presence...

  • Identification of a Three-Site Defect in Semi-Insulating 4H-SiC. Garces, N. Y.; Carlos, W. E.; Glaser, E. R.; Fanton, M. A. // Journal of Electronic Materials;Apr2007, Vol. 36 Issue 4, p268 

    Using electron paramagnetic resonance (EPR), we observe a defect that increases significantly with annealing temperature. This spin S = 1 defect is characterized by gx ≈ gy ≈ gz = 2.0056 and a fine structure splitting D ∼ 100 G whose principal axis lies in a plane perpendicular...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics