L. V. Zolotukhina
Russian Academy of Sciences
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Featured researches published by L. V. Zolotukhina.
Inorganic Materials | 2000
T. I. Krasnenko; L. V. Zolotukhina; L. V. Andrianova
The α- andc-axis thermal expansion coefficients of α-Zn2V2O7 (monoclinic structure) were found to be negative between 20 and 560‡C. The volume expansion coefficient is negative above 260‡C. As a result, the zinc atoms tend to be in sixfold rather than fivefold coordination. Similar behavior results from substitution of larger sized ions on Zn sites. These effects are associated with the shear strain suffered by the soft Zn-0 polyhedra as a result of significant changes in Β. On cooling from 20‡C to liquid-nitrogen temperature, as well as upon substitution of smaller sized ions on Zn sites, the major structural changes occur along theb axis, without changes in theac plane: the soft polyhedra experience uniform compression and the Zn ions remain in fivefold coordination. Only in the latter case is the extent of substitutional solid solutions governed by the relative difference in size between the host and substituent ion.
Inorganic Materials | 2000
L.A. Perelyaeva; L. V. Zolotukhina; L. V. Kristallov; E. V. Zabolotskaya; M. G. Zuev; E.V. Arkhipova
The subsolidus phase relations in the MVO4-Ta2O5-Nb2O5 (M = Y, La) systems were studied. MNb2-2xTa2xVO9 (I) and MTa2-2xNb2xVO9 (II) solid solutions were prepared and characterized by x-ray diffraction, vibrational spectroscopy, and electron spin resonance. The range of solid solutions in I isx = 0–0.58 for M = Y and 0–0.4 for M = La; in II,x = 0–0.09 for M = Y and 0–0.1 for M = La. All of the solid solutions were found to contain V(IV) centers whose nearest neighbor environment depended on composition. The structure of LaTa2-2xNb2xVO9 was shown to contain fragments characteristic of LaNb2VO9. The lattice parameters of these solid solutions correlate with the V(IV) content.
Inorganic Materials | 2003
T. I. Krasnenko; L. V. Zolotukhina; L. V. Andrianova
AbstractThe vapor composition over zinc pyrovanadate, Zn2V2O7 , was studied by mass spectrometry in order to elucidate the mechanism of the explosive phase transition the material undergoes during cooling. The vapor phase over zinc pyrovanadate is found to contain the complex ion ZnVO+3. A model for the formation of lattice defects in Zn2V2O7 during heating is proposed. The explosive phase transition during cooling is shown to be associated with the formation of the vacancy complex □
Inorganic Materials | 2000
L. V. Zolotukhina; B. V. Slobodin; O. V. Koryakova; E. V. Zabolotskaya
Inorganic Materials | 1998
T. I. Krasnenko; L. V. Andrianova; L. V. Zolotukhina; A. A. Fotiev
_{{\text{Zn VO}}_{\text{3}} }^ -
Journal of Solid State Chemistry | 2002
M. G. Zuev; E.V. Arkhipova; L.A. Perelyaeva; L. V. Zolotukhina; O.B. Lapina; R.N. Pletnev
Inorganic Materials | 1999
T. I. Krasnenko; L. V. Zolotukhina; E. V. Zabolotskaya; S. V. Svetlakov; V. G. Dobosh
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Russian Journal of Inorganic Chemistry | 2007
T. I. Chupakhina; N. A. Zaitseva; G. V. Bazuev; L. V. Zolotukhina; E. V. Zabolotskaya
The effect of the preparation procedure on the defect structure of LiVO3 and Li1-xCo0.5xVO3 (0 <x ≤0.35) solid solutions was studied by IR spectroscopy and electron spin resonance. The polycrystalline materials prepared by solid-state reactions, slow melt cooling, and melt quenching were all found to contain significant amounts of structural defects. The concentration of V(IV) centers and the distortions of the V-O polyhedra in the solid solutions were shown to correlate with oxygen deficiency and cobalt content.
Russian Journal of Inorganic Chemistry | 2003
E. V. Zabolotskaya; L. V. Zolotukhina; N. A. Zaitseva; G. V. Bazuev
Inorganic Materials | 2003
T. I. Krasnenko; L. V. Zolotukhina; L. V. Andrianova
