Local lattice distortions and ligand hyperfine interactions in Eu2+ and Gd3+-doped fluorites / Gorlov AD,Guseva VB,Zakharov AY,Nikiforov AE,Rokeakh AI,Chernyshev VA,Shashkin SY // PHYSICS OF THE SOLID STATE. - 1998. - V. 40, l. 12. - P. 1969-1974.

ISSN/EISSN:

1063-7834 / нет данных

Type:

Article

Abstract:

A computer simulation of lattice distortions around an impurity ion Eu2+ in MeF2 fluorites (Me = Ca, Sr, Ba) is reported. ENDOR data on displacements of F- ions distant from an impurity center were used to determine the parameters of the Eu2+-F- short-range interaction potential. A theoretical study of the effect of hydrostatic pressure on the impurity-center local structure has been made. A comparison with experimental data permits a conclusion that the calculated ligand displacements are reliable. An experimental ENDOR investigation of the ligand hyperfine interaction (LHFI) in MeF2:Gd3+ crystals (Me = Ca, Sr, Pb, Ba) has been performed. The results obtained in the simulation are used to describe the LHFI of impurity ions with the nearest-neighbor fluorine environment. The contributions to LHFI associated with ligand polarization are shown to constitute 10-50\% of the experimental LHFI constants. The inclusion of such contributions results in practically linear dependences of the remaining short-range part of the LHFI on distance. (C) 1998 American Institute of Physics. {[}S1063-7834(98)00712-6].

Author keywords:

DYNAMICS; GD3+

DOI:

10.1134/1.1130696

Web of Science ID:

ISI:000077763800007

Соавторы в МНС:

Другие поля

Поле	Значение
Month	DEC
Publisher	AMER INST PHYSICS
Address	CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 USA
Language	English
Keywords-Plus	DYNAMICS; GD3+
Research-Areas	Physics
Web-of-Science-Categories	Physics, Condensed Matter
ResearcherID-Numbers	Nikiforov, Anatoliy/L-4436-2016
Number-of-Cited-References	15
Usage-Count-Last-180-days	1
Usage-Count-Since-2013	3
Journal-ISO	Phys. Solid State
Doc-Delivery-Number	152ET