Zobrazeno 1 - 10
of 25
pro vyhledávání: '"V. B. Guseva"'
Publikováno v:
Physics of the Solid State. 53:2305-2310
The splitting of the ERP spectrum of a single Gd3+ ion into four intense components has been observed in crystals of Pb5(Ge1 − xSix)3O11 solid solutions, which is caused by the appearance of silicon ions in three nearest germanium spheres. The atom
Publikováno v:
Physics of the Solid State. 53:773-778
Abrupt changes in resonance positions, hysteretic temperature behavior, and coexistence of phases, which indicate a first-order phase transition, have been revealed from measurements of temperature dependences of the EPR spectra of Gd3+ and Mn4+ cent
Publikováno v:
Physics of the Solid State. 52:1859-1864
The Cr3+ centers have been revealed, transitions at room temperature have been identified, and spin Hamiltonian parameters have been determined for the Cr3+ and Fe3+ triclinic centers in lanthanum gallate lightly doped with manganese. The principal a
Publikováno v:
Physics of the Solid State. 52:691-699
Radiation-disordered crystals of phenakite Be2SiO4 (at fast neutron fluences of (0.75, 1.0, 1.2, 6.6, 8.5) × 1018 cm−2) have been investigated using EPR spectroscopy. It has been established that the main radiation damages predominantly occur in t
Publikováno v:
Physics of the Solid State. 52:515-522
An increase in the manganese concentration in lanthanum gallate in the range 0.5–5.0% has been found to result in a complete replacement of individual Mn4+ ions by Mn2+ ions. The relative concentrations and binding energies of individual Mn4+, Mn3+
Publikováno v:
Physics of the Solid State. 51:917-923
An EPR study of two phases of manganese-doped lanthanum gallate (with a first-order structural transition occurring at 430 K) has revealed Gd3+, Fe3+, and Mn4+ centers at room temperature and 438 K. The parameters of spin Hamiltonians are determined
Publikováno v:
Glass Physics and Chemistry. 34:709-715
This paper reports on the results of the investigation of the cathodoluminescence spectra of silica and alkali silicate glasses upon excitation with a pulsed electron beam (energy, 180 keV; current density, 700 A/cm2; pulse duration, 2 ns). The lumin
Publikováno v:
Physics of the Solid State. 50:425-431
The parameters of the zero-field level splitting of Gd3+ ions localized in three kinds of tetrahedral clusters are estimated within the superposition approximation. The structure of a cluster is determined by minimizing the energy of the crystal with
Publikováno v:
Physics of the Solid State. 49:660-666
This paper reports on the results of investigations into the orientation behavior of the splitting of the electron paramagnetic resonance spectrum due to the location of paramagnetic ions in different domains of Cu2+-containing lead germanate. The of
Publikováno v:
Physics of the Solid State. 48:1539-1543
This paper reports on the results of investigations into the temperature and orientation dependences of the electron paramagnetic resonance spectrum in the vicinity of accidental coincidence of the spectral lines attributed to the signals (homogeneou