24 March 1999 Growth and investigation of LaxRE1-xF3 (RE=Ce,Pr,Nd) single crystals
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Abstract
The mixed LaxRE1-xF3 (RE equals Ce, Pr, Nd) single crystals doped with Gd3+ (0.1 mol%) were grown by a modified Bridgmann-Stockbarger method using an induction furnace. The quality of crystals were controlled by X-ray diffraction and EPR technique, in addition the observation of defects with the polarizing microscope after chemical etching with acid was performed. The behavior of surrounding Gd3+ ions in hexagonal matrices was investigated at different temperatures (4.2 - 300 K), analyzing EPR data in the light of the superposition model. The distortion of the site symmetry of Gd3+ ions from the C2v towards C2 was observed in La0.9Nd0.1F3 at 4.2 K. The low temperature magnetic ordering was determined to be antiferromagnetic (TN equals 0.4 K for NdF3 and TN equals 0.03 K for La0.9Nd0.1F3 using the molecular field theory).
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Mieczyslaw L. Paradowski, Wieslawa Korczak, Lucjan E. Misiak, Zbigniew Korczak, "Growth and investigation of LaxRE1-xF3 (RE=Ce,Pr,Nd) single crystals", Proc. SPIE 3724, International Conference on Solid State Crystals '98: Single Crystal Growth, Characterization, and Applications, (24 March 1999); doi: 10.1117/12.343026; https://doi.org/10.1117/12.343026
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