Accession Number:

ADP011906

Title:

PIXE and Magnetic Investigations of La(x)RE(1-x)F3 (RE = Ce, Nd) Single Crystals

Descriptive Note:

Conference proceedings

Corporate Author:

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

Report Date:

2001-01-01

Pagination or Media Count:

4.0

Abstract:

The mixed LaxRE1-xF3 RE Ce, Nd single crystals doped with Gd3 0.1 mol were grown by a modified Bridgmann-Stockbarger method. The PIXE Proton Induced X ray Emission method was used to the determination of a composition x of this material. The value of x for these samples does not differ more than 2.5 and 7.5 in LaxCe1-xF3 and LaxNd1-xF3 respectively, from the assumed one. In addition, concentrations of the doped rare earth atoms were controlled by XRF X-Ray Fluorescence method. The abundance of other than Gd3 rare earth impurities was estimated to be below 0.058 at.. The magnetic susceptibility of the single crystals was measured in the temperature range 4 - 300 K, in a magnetic field B 0.2 T applied in the crystallographic plane 001 perpendicular to the c-axis along the a-axis, using the Faraday method. The magnetic susceptibility measurements confirm the lack of Ce3 and Nd3 clusters in the diluted crystals. The effective spins of hosts Ce3 and Nd3 are equal to 12 in the temperature range 4 - 300 K.

Subject Categories:

  • Physical Chemistry
  • Crystallography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE