Accession Number:

ADP011893

Title:

Gd(3+)-Yb(3+) Exchange Interactions in LiYb(x)Y(1-x)F4 Single Crystals

Descriptive Note:

Conference proceedings

Corporate Author:

MARIE-CURIE SKTODOWSKA UNIV LUBLIN (POLAND) INST OF PHYSICS

Personal Author(s):

Report Date:

2001-01-01

Pagination or Media Count:

4.0

Abstract:

The evaluated Gd3 -Yb3 exchange interactions over the nearest and the next-nearest neighbors in LiYbxY1-xF4 are found to increase in parabolic manner with x, the concentration of Yb3 ions. The Gd3 -Yb3 exchange interactions are sensitive to x in the range x 0.6 - 1.0, while they are almost constant in the range x 0.1 - 0.5. The estimated Gd3 -Yb3 exchange interaction constants, J Jsub nn Jsub nnn, are in the range 0.5 - 2.8 GHz for x from 0.1 to 1, respectively. These exchange interaction constants are increased with lowering temperature. The results are comparable to those of estimated using the molecular-field model. The average Gd3 -Yb3 pair exchange interaction constant is determined to be 0.33 GHz in paramagnetically diluted LiYbxY1-xF4 crystals.

Subject Categories:

  • Inorganic Chemistry
  • Crystallography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE